Saturday, July 12, 2008
T minus 6 and Counting....
Monday, April 14, 2008
Packing List
So – here goes (for a ten-day tour): (Remember, this is what *I* bring usually. It does not mean you have to bring everything I list, or can’t bring something that I don’t list)
Clothes
Generally I find that I don’t sweat much in spite of the activity. We’re not working in mud or pushing our way thru forests, so your clothing can last for a couple of days. We usually get a daily shower and most folks seem to retain a certain amount of civilization (some would argue that point about me).
· Pants, loose fitting – 4 pairs, cargo style pants a plus (lots of pockets)
· Shirts, long sleeve – 4
· Shirts, short sleeve – 4
· Socks, thick and warm – 10 (alternative – sock liners with just a couple pairs of heavy socks, but blisters may be a concern)
· Underwear – per your choice; we can do quick loads of laundry at Peter’s
· Gloves, 1 pr – two if you’re gonna lose them, can be bought locally
· Hat, w/ mosquito net (you can buy this in Greenland if you wish)
· Fleece jacket
· Windbreaker/Rain jacket (remember layers)
· Rain pants if you really want to be dry (I don’t use them, but some do) (rain gear should be light and cheap throw away type items like the vinyl quickies; good for ten days)
· Hiking boots – broken in and comfortable, steel toe if can…
· Bathrobe/pajamas/ etc for common areas
· Thermal underwear (if you plan on a lot of camping – optional, I seldom use)
Sundries & Misc.
· 100% DEET – small bottle
· Shaving stuff (I don’t shave until Herb and Howie force me)
· Wipes/Field TP
· Soap/shampoo (the hotel won’t supply any – but you can buy locally)
· Medicines, band-aids, Excedrin/Motrin/Tylenol (no USA medicines in GL)
· Prescription medicines – make sure you have fresh refills
· Sunglasses
· Batteries (“AA”, “AAA”)
· Tools (pliers, knife, etc – all in one)
· Tape for packing
· Plastic shrink wrap on a roll for rock wrapping (bubble pack available locally for a fee)
· Tape (adhesive for gauze, for rock tagging)
· Sharpie for writing
· Reading material (off hours assuming there will be some) or other down-time activity things
Equipment
· Backpack
· Hammer
· Chisels (2)
· UV tent (BBQ grill cover)
· Tent and accessories
· Sleeping bag (synthetic, not down)
· Water bottle/camel pack
UV Prospecting
· UV Light with spare bulb
· Battery packs
· Battery charger w/ 220v adaptor
· Fluorescent marker tape
· UV/Safety glasses
Food
The hotel has cooking facilities and we can buy food locally. Snacks (USA style) are good to bring as the stores don’t seem to carry much of that….
· Dry mix Gatorade
· Peanut butter
· Energy bars/Crackers packs
· Packaged tuna
· Ramen noodle soup
· MREs (Heater Meals – self heating, just add water)
· Oatmeal (packets, instant)
High Tech Gear
· Flashlight/Headlamp – LED headlamps are great
· GPS
· GMRS Walkie Talkie (I use a combined unit – GPS/GMRS, Garmin Rino)
· Laser (J)
· UV LED flashlight for LW
· Camera – small and light good
· Alarm clock if you need one – but really not needed. You will learn to hate me as I pound on doors.
Things I see no purpose in bringing, but I have seen people bring (but that’s just me)
· Laptop (take a break – relax, let your hair down!) You can use Peter’s ‘puter to send/receive email.
· Cell phone - (You don’t want a cell phone. First, odds are poor it will work either in town or (especially) in the hills, even if a spiffy ‘tri-band’ model with international roaming. Second, if it did work, it might ring. And that wouldn’t be good. Finally, you will be looking for things to dump from pockets rather than add. But you can always bring it and see for yourself)
· Knee pads (useless)
· Stools to sit on while searching rocks (roflmao)
· Walking sticks (IMHO dangerous)
· Stove – fuel available in Narsaq (but more a hassle than anything else IMHO)
This is a start. Perhaps other folks can chime in and add/subtract from the list’ then I’ll put it on the blog for future reference. Remember – you’re only in Greenland for 10 days and you have a lot to bring just to support your prospecting activities. Towards the end we’re all running out of clean clothes and getting quite raunchy – but we’ve got kilos of rocks! Try to reserve a clean set of clothes for the return trip – the people on the plane will appreciate it.
Friday, April 11, 2008
LiFE Battery Packs
With an exceptional “power to weight” ratio, durability, and safe operation, LiFE Battery Packsare the next generation battery for handheld portable UV lamps. Using patented lithium-ion chemistry (based on new nanoscale material developed at MIT), these packs provide high performance and abuse-tolerance unmatched by any other battery technology.
Power
· 13.2vdc – extra power, increased light, less weight. Lightweight, small battery packs - 2.3AH or 4.6AH. (higher amperages can be had)
· Maximum power to end of charge, no degradation in lamp output.
· Ultra fast charge –less than 5 minutes to charge to 90% capacity, full charge in less than one hour. No more waiting overnight for a charge.
· Thousands of recharge cycles when used at low-discharge rates, unmatched by any other battery technology.
More volts, longer, than other batteries - UV lamps powered by 12vdc batteries are capable of operating at 14vdc (the output of a charging car battery) and shine brightest at the higher voltage. A constant 13.2v instead of a slowly dropping 12v provides more light output, and brighter finds! Lightweight means you can carry more rocks!
Safety
· Inherently safer chemistry
· Superior abuse tolerance
Safer technology than NiMH, NiCD or even SLA - Nanophosphate™ technology is designed to be highly abuse-tolerant while meeting the most demanding requirements of power, energy, operating temperature range, cycle life and shelf life. Multiple layers of protection are employed at the chemistry, cell and pack level to achieve an energy storage solution with superior safety and abuse tolerance. (As with all batteries, charging should not be done unattended)
Life
· 10+ year projected shelf life, will not self discharge
· Industry leading cycle life – thousands of charge cycles
· Environmentally friendly chemistry
Long life – in the field and on the shelf - Rechargeable lead-acid (SLA), NiCD, and NiMH batteries will “self-discharge” when sitting on the shelf. Some (such as lead-acid) can be damaged by long-term storage and rendered unusable. UV-PowerPaks will last years without use, and can be recharged thousands of times.
Battery Pack Specifications
2 hour Battery - A small exceptionally light pack with over 2 hours of power – rechargeable in 15 minutes. Lightweight - can easily be carried in a pocket. Two packs will provide an evening of lamping without even being aware that you’re carrying a battery – or use just one pack; it can be recharged in under ½ hour using your car/truck battery.
· Power: 2.3AH (amp hours) at 13.2vdc. Will power the average lamp for over two hours, longer with intermittent “lamp on” time. High constant voltage output insures maximum lamp brightness.
· Weight and Size: 12 ozs, 4 ½” x 2 ½” x 1” (a little bigger than a pack of cigarettes)
· Charge time (from a full discharge state): Under 45 minutes for a full charge
· Connectors: High current, high reliability Anderson Power Pole with locking connector (cigarette lighter connector adapter available). Auxiliary balancing connector assures full balanced charge of each cell.
4 hour Battery - For those who need more power, longer, the 4 hour pack is essentially two “2 hour” packs wired together. Over 4 hours from one lightweight pack.
· Power: 4.6AH (amp hours) at 13.2vdc. Will power the average lamp for over four hours, longer with intermittent “lamp on” time. High constant voltage output insures maximum lamp brightness.
· Weight and Size: 1 Lb, 7 ozs, 4 ½” x 2 ½” x 2”
· Charge time (from a full discharge state): Under 1 hour for a full charge
· Connectors: High current, high reliability Anderson Power Pole with locking connector (cigarette lighter connector adapter available). Auxiliary balancing connector assures full charge of each cell. (Inquire for SuperBright II connector).
Required Charger: For both batteries - Hyperion EOS 5i (available separately) – Universal AC power (110v to 240v)/DC powered (12vdc car battery), quick charge, LCD status display, automatic cell balancing. Can also charge other types of batteries such as lead-acid, NiCD, and NiMH.
Optional Cigarette Lighter Connector – Adapts new battery pack connectors to lamps using old-style connectors. If possible we recommend replacing your old connector with the new style powerpole connectors.
HYPERION EOS 5I DP Charger
The EOS 5i DP AC/DC is a versatile, easy-to-use charger with special features for fast charging of 2.3AH and 4.6AH LiFE battery packs – at home or in the field! It can also be used to charge many other types of battery packs. AC/DC operation allows charging directly from AC wall supply while at home OR from a 12V DC battery while at the field. LBA10Cell Balancer (included) insures proper cell balancing and long life.(This charger is required to charge UV-PowerPak batteries – do not attempt to charge with any other charger.)
Specifications:
· Two INPUT power choices, power from home AC, or car battery
o Use AC 100~240V at home
o DC 11~15V anywhere
· 2 Line LCD for charge monitor and post data display
· Charge/Discharge (useful for cell balancing)
· 1-14 cell NiCd/NiMH Batteries
· 2-12v Lead Acid Batteries
· 1-5 cell Lithium Ion or Lithium Polymer Batteries
· Cell balancing - LBA10 included
· 0.1-5A Charge Current
· Audible Function Alarm
· Output Charge Cord/Connector set included ($4.00+ value)
· Double-length Input cord for convenience
Why LiFE?
· Light weight!
· Higher voltage, more lamp watts
· Constant power to the end of the charge
· Quick recharge (10 - 30 minutes)
· Reliable – thousands of charge cycles
Sealed lead acid batteries are fine if you’re starting a car. But they have inherent problems, as do other technologies. Over time an SLA battery will simply go dead. These types of batteries are not made for deep discharge, or for sitting on a shelf over the long winter months. Life expectancy can be as little as 200 charge cycles – at best 500 cycles. And the worst thing about it is that you probably won’t even know until your light finally just won’t light (or the battery boils over during charging). NiMH and NiCD are a little better, but come with their own set of problems. And they all take 8 to 10 hours to recharge!
This chart compares the brightness (actual watts, over 8 hour time period) of an 11 watt lamp powered by a 7 pound, 8AH lead-acid battery to a lamp powered by a set of two 4.6AH (9.2AH total) UV-PowerPak batteries (total weight of less than 3 lbs).
What is Cell Balancing?
12V battery packs are made by “stringing together” lower voltage individual batteries. A typical individual battery cell generates around two volts (on average). If you wire 6 of these cells in series you will get 12vdc (lead-acid for example). Some cells may generate only 1.2v, thus 10 cells are needed to get 12vdc (NiMH). Others may generate slightly more voltage, but the principal remains the same. Simply wire in series the number of batteries needed to get 12vdc.
Because of production tolerances, uneven temperature distribution and differences in the ageing characteristics of particular cells it is possible that individual cells in a series chain could become overstressed leading to premature failure of the cell. During the charging cycle, if there is a degraded cell in the chain with a diminished capacity, there is a danger that once it has reached its full charge it will be subject to overcharging until the rest of the cells in the chain reach their full charge. The result is temperature and pressure build up and possible damage to the cell. During discharging, it is even possible for the voltage on the weaker cells to be reversed as they become fully discharged before the rest of the cells resulting in (permanent) failure of the cell.
Because Lead acid and NiMH cells can withstand a level of over-voltage without sustaining permanent damage, a degree of cell balancing or charge equalization can occur naturally with these technologies simply by prolonging the charging time since the fully charged cells will release energy by gassing (getting hot) until the weaker cells reach their full charge. Usually this is not harmful to these cells unless the imbalance is severe – then heat can permanently damage a cell, or worse – cause a fire. Although the problem is reduced with Lead acid, NiMH batteries and some other cell chemistries, it is not completely eliminated and solutions should be used for most multicell applications. Heat is a battery's enemy so we must do everything to limit this heat, but insure maximum charge.
Lithium cells cannot tolerate over-charging. The cells in the UV-PowerPaks are Lithium Ion and thus need some kind of balancing to prevent this from happening. This is taken care of automatically during the charge process by the Hyperion Charger and LBA10 Cell Balancer. At the end of a charge each cell in the battery pack will be charged to its optimum voltage, ready for an evening’s use.
A side benefit to this balancing procedure is MAXIMUM POWER (all cells are fully charged, doing their job) and longer life from your battery pack – both in charge times, and in simple longevity. A lead-acid battery with a discharged cell - at a minimum - will provide less runtime, and can risk cell reversal and ultimate failure of the entire battery. NiMH packs can heat up to a point where they might even catch fire if not protected by an over temperature sensor during charging. Intelligent charging and safe battery technology solves this problem and is recommended for all multi-cell applications – and is required for UV-PowerPak Lithium Battery Packs.
Batteries Rehashed
NiMH battery packs
Jim sent an email a few weeks ago about batteries and packs and cables and stuff. I am condensing it here to make sure everyone gets it....
There are a couple of varieties of battery packs available. A 10AH battery will last twice as long as a 5AH battery, but is twice as heavy. The choice is yours....
Fanny Pack Battery: 12V 10Ah (120 Wh) NiMH in Belt Bag + Fast Smart Charger for Portable Lighting $139.95
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2357 - Fanny pack, your choice
Belt Bag Power Kit : NiMH 12V 10Ah (120Wh, Dx10 Hump) + Fast Smart Charger for Portable Devices $154.95
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2990 - Belt pack, your choice
Belt Bag Power Pack: 12V 5 Ah (60 Wh) NiMH (Hump) Battery + Fast Smart Charger for Portable Devices $89.95
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=3044 - smaller capacity, but lighter
For WTC owners one (or two or three) of the above is all you need. The lamp will plug directly into the pack with the cigarette lighter connector. I recommend at least two battery packs, and only one charger. Use one in the field while the other is in the hotel charging. I like the 5AH batteries - they are lighter; but you might consider 3 packs in that case just to be sure you have enough power.
For Superbright owners:
You will need the B215 cord from UV systems that allows your superbright to be plugged into a cigarette jack. Then the above batteries can power the Superbright.
B215 Auxiliary fifteen foot cord to operate your SuperBright II from your cars cigarette lighter jack. $29.95 (keep in mind this is a 15 ft straight cored instead of the 6 ft coiled cord found on the battery pack)
http://www.uvsystems.com/checkout/agora.cgi?p_id=3_5&xm=on
UV Systems offers a car lighter cord - that solves everyone's problems when hooking up to 3rd party batteries. All they have to do is buy that and one of the battery kits you suggested. I agree wholeheartedly with your analysis of the cigarette lighter connector - but that's what everyone uses. I use a different connector on my lamps - be sure to take a look at it this summer; it may work for you...
13.2V NiMH should not be a problem. They rarely get up to 16v, and if they do it will only be for a short time - rapidly settling in at 13.2v. Car batteries (lead/acid) are similar - they charge at 15v +/- and will initially put out around 14v or more for the first few minutes... When charging the car can put out 15+ volts so the lamps must be capable of handling that voltage...
So - sounds like the SBII cable problem is resolved - everyone get it?
5AH vs 10AH - more battery power (AH) is always good. The tradeoff is weight. A personal decision... But remember, two is better than one...
Here is a quick and dirty solution to convert your SuperBright to NiMH.
First choose one of these battery kits. The have the NiMH batteries in a belt bag or fanny pack with a cigarette style connector. They also include an appropriate universal charger.
Fanny Pack Battery: 12V 10Ah (120 Wh) NiMH in Belt Bag + Fast Smart Charger for Portable Lighting $139.95
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2357
Belt Bag Power Kit : NiMH 12V 10Ah (120Wh, Dx10 Hump) + Fast Smart Charger for Portable Devices $154.95
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2990
Belt Bag Power Pack: 12V 5 Ah (60 Wh) NiMH (Hump) Battery + Fast Smart Charger for Portable Devices $89.95
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=3044
5Ah vs 10Ah
The Superbright draws 1.53A so the 5AH pack will last approximately 3 hours and the 10AH pack approximately 6 hours.
For guys like Mark and Howie that know where the rocks are and what they look like the 5AH pack is probably enough. For the rest of us that need to lamp dozens of square meters of ground to find the rocks the 10AH pack might be a better choice. Taking two 5AH packs up the mountain might be an advantage since when one dies you know you are exactly half way thru your power.
12V vs 13.2V
Don't exceed 12V without consulting the lamp manufacturer! The 13.2V battery pack when freshly charged will be putting out 16V. This may be to much for your lamp. The second step is to buy the B215 cord from UV systems that allows your supper bright to be plugged into a cigarette jack.
B215 Auxiliary fifteen foot cord to operate your SuperBright II from your cars cigarette lighter jack. $29.95 (keep in mind this is a 15 ft straight cored instead of the 6 ft coiled cord found on the battery pack)
http://www.uvsystems.com/checkout/agora.cgi?p_id=3_5&xm=on
I used the above system in Greenland in 2006. The Superbright and the batteries performed great but the cigarette jacks SUCKED ASS! They are always pulling out and make intermittent contact. I sort of solved this problem by using some rubber bands to hold them in. The other problems is the wires spin around inside the connector and then short out or break off. This happened to me but fortunately I brought two battery packs so I had a backup.
What I ended up doing when I got home is replacing all of the cigarette style connectors with 4-pin microphone jacks from Radio Shack. These can be screwed together to prevent them from pulling out.
4-Pin Panel Mount Microphone Audio Jack
http://www.radioshack.com/product/index.jsp?productId=2103996&cp=2032058.2032231.2032280&pg=6&parentPage=family
4-Pin Female CB and HAM Radio Microphone Plug
http://www.radioshack.com/product/index.jsp?productId=2103255&cp=2032058.2032231.2032280&pg=11&parentPage=family
The female connector goes on the battery side so there are no exposed pins with power on them to short out. The male connector goes to the lamp side. This is a panel mount device so you will need to use some heat shrink to seal up the back.
The other end of the cord goes to the connecter on the superbright
This is what it says on my Superbright II Connector:
Outer section says: Amphenol C16-1
Inner section says 3109
These are the pinouts for this connector that Don prints on the side of the superbright.
12VDC 1.53A
1 & 2 = +
3 & GND = -
The 4 pin microphone connecters are infinitely better than the cigarette jacks but they are still not perfect. The one problem I have found is if you insert them wrong you can get them in far enough to make contact which will blow the fuse. My solution is to be careful and carry extra fuses. I eventually want to get some mil spec connectors but have not had time to search.
Lamps and Batteries
I used the NiMH batteries last time and was very pleased with them. The new Lithium Ion batteries look very interesting. I send Mark a bunch of technical questions on those. My only electrical problem was with the cigarette style connectors on my battery packs. These SUCK! Here are the problems:
Wires break off inside. If you use these cigarette style connectors make sure you tape the wires so there is no movement of the wires going to the connectors. Otherwise the wires break off at the soldered connections.
Connectors do not make good contact. I was always fiddling around with he connectors trying to get them to make contact. I ended up using a rubber band to always keep pressure on the connector The connectors keep pulling out if you catch the wire on anything Cigarette connectors have high resistance. After using the light for a while the connector would get noticeably warm. This indicated you were dissipating power in the contact resistance. This is power that is not making it to your lights.
I ended up replacing all my cigarette style connectors with some 4 terminal microphone connectors from radio shack. These screw together and solved all the above problems.
Question comes up about lamps.....
There are two primary manufacturers of lamps (IMHO) - Way Too Cool and UV Systems. Each has advantages/disadvantages...
Way Too Cool - multiple wave lengths in one unit, bright, cheap - not very rugged
UV Systems - rugged, quite expensive IMHO
Having experienced both of these in the rugged environment of Greenland I've found the UV Systems SuperBright to hold up best. But neither will garner my endorsement (in the lingo of the times). Both have their problems, although the SuperBright reportedly has fixed the problem with the connector, and perhaps the Way Too Cool units are being built sturdier.
The SuperBright has been the industry standard for years. It is rugged but requires a damn lead acid battery :-( (as do all the other lamps). But you can reduce battery weight by going with NiMH or Poly-Ion.
Personally I'm so fed up with field lights that I build my own. This year I have what I believe will be the best of the best - we'll see. 26 watts in a light, sturdy handheld lamp.... I really only build these because I love tinkering, and have time on my hands.
I'd be interested in other opinions from the folks on this list. I know they all have at least one of the two mentioned above. FWIW - Howie and Don are gambling on my light this year.... (they both finally put their superbrights out to pasture).
You *will* see a constant theme in my responses to equipment, etc. Don't scrimp! Buy the best you can buy. You're going a very long way, to find the rarest rocks on earth, and will probably only do it once. Now is not the time to save pennies.
I have an electronics background, and will be happy to try and fix anything that breaks in the field. But I need to know what lights people are bringing so I can bring parts to repair them.
So, if I get:
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2357This one is 10AH - heavier than I like - but if you're happy with it, it's certainly ok. It's the complete package, case, charger and one battery pack and http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=4096] These are the individual battery packs.
FWIW - I prefer these: http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=2387 - they're only 5AH, but lighter and cheaper. The charger is different, and the connection is also different. I sent an email previously describing all this. But what you have picked will certainly work, and it's a complete package - nothing else to buy (except for the Europe power adaptor)
I will be able to:
1) have 1 pack with me and 1 charging - both handling long hours of use10AH on each pack - will give you about 8 to 10 hours on your lamp, plenty
2) AC wall charging (assuming I bring an appropriate AC adapter for Greenland power)The charger is universal meaning it will operate on 220v, but you will need the special adaptor for plugging into European plugs.
3) Much lighter batter than my lead acid battery I have nowDunno - how much does your battery weigh now? This new battery weighs 3.6 LBS. If you have a 7/8AH lead acid ti probably wieghs 6 to 7 LBS
Subject: RE: NiMH battery packs
Sorry - forgot to answer that. "Dx10" means 10 each "D" cells. "Hump" is the way they are packaged. "D" refers to the size of the battery - i.e. - D, C, AA, AAA. That pack is comprised of ten D cells, in a "hump" configuration (don't know why they call it hump) - I guess it's how they stack the cell together.
NiMH cells are 1.2v each (as opposed to 1.5v for alkaline cells - Eveready type batteries for your flashlight). It takes ten of them to make 12 volts....
The best sized NiMH battery packs I've seen are those made with ten "C" cells, 5AH (at least I think they are C cells - or maybe a longer version of a C cell)
Batteries are spec'd in terms of [amp hours] or sometimes [watt hours]. It all refers to the amount of power a battery can supply. A 10AH (amp hour) battery at 12 volts will supply 120 watt hours of power until it is discharged (used up).
All we really need to be concerned with is the amp hours. If you have a lamp that uses (draws) 1 amp, and you have a 10AH battery, your light will work for about ten hours. This is not too far off for the WTC lights - they draw around 0.75A to 1.25A depending on how many lights you have on, how cold it is, and the phase of the moon. Figure that you need to feed it 1 amp - makes for easy calculations.....
I recommend multiple batteries, lower weight. Commonly folks use 5AH batteries (powers your lamp for 4 to 5 hours). They will carry two of these in the field, and perhaps have one or two charging back at the hotel for the next day. They take up to 8 hours to charge, so 3 would work fine assuming you don't lamp for more than 8 to 10 hours per day. One charges while you are in the field, the other can be charged overnight - and you'll have two fresh batteries for the next day.
Regarding use of your lamp: the "on time" will be much less than the time you spend in the field. You will only turn your lamp on when you are examining rocks under your tent - probably 15 minutes out of every hour at best. Plus you have travel time to get to/from the sites, so you will find you will probably use your lamp no more than 2 to 3 hours per day. If we go out at night it will get more extensive use....
Someone else chime in???? Maybe explain it better?
Monday, March 17, 2008
Star Wars Comes to Greenland
Blu-Ray DVDs are the latest rage. They store much more data than ordinary DVDs/CDs and this is a result of the laser diode used to read/write the data. Other types of DVD burners use red or IR Laser Diodes, but Blu-Ray uses a violet laser diode (405nm peak). This is almost LW UV. The shorter wavelength allows a smaller dot, and higher density writing on the DVD.
Greenland minerals are highly reactive to even blue light - so I figured that a violet LD would be very interesting. These diodes are not available "off-the-shelf" for under $2,000.00 as the entire supply is eaten up by Sony and others.... So - as an experiment I bought the optical assembly for a Playstation 3 (spare part) and ripped the Blu-Ray laser diode out of it. This diode puts out about 10mw to 20mw of power; enough to make a very dangerous laser. I built my own electronic driver and installed everything into a case which previously housed a small red laser (And 15 LEDs - more on that later). Result - success! Amazing success....
With even this low power laser I could light up sodalite, tugtupite, calcite, fluorite, wernerite, all the uranium minerals, even Franklin calcite! The daytime glow was amazing. The theory is that I can use my laser while hiking to our favorite spots to see if any glow minerals are lurking in the shadows on our way. Without the laser I would have to unpack my gear, set up my light, get under a grill cover just to find out that nothing glows....
Given my success with the low-power diode, I decided to build a "death-ray" - 100mw of power.
It's the size of a small penlight flashlight, with a high-power laser diode, and 10 375nm UV LEDs filtered by Hoya glass. A single switch controls the laser or LEDs, and the unit is powered by one of my standard UV lamp batteries (small shirt pocket size). With the LW LEDs I can light up larger areas of longwave rocks for closer inspection without using the laser (and risking eye damage).
This diode was ripped from the latest and greatest DVD writer/burner from LG Electronics (GGW-H20L). This writer is a high-speed 6X writer, and the diode will run at 105mw - enough to burn! Following the same procedure I used to build the low-power model I ended up with a laser which will 1.) Light matches, 2.) Burn paper, 3.) Make rocks go crazy.
I set the output to about 85mw to conserve on battery, heat, and have a longer laser life. I then proceeded to run a few tests. This laser makes every longwave mineral glow like a banshee (as you would expect) but also makes some others glow that I did not expect. You can actually write your name in Franklin calcite with the "flash" typical of that calcite. I experimented with it outside and found that even under bright noontime sun minerals will exhibit a bright glow. In the dusk/nighttime hours I can easily light up rocks 250' away!!!
The pic above shows the beam in a dark room shot thru smoke. It's pretty much invisible until it hits something that is fluorescent.
Above is a piece of Greenland sodalite (against a white background paper). The laser penetrates the mineral and causes it to glow from within.
Wenerite - bright yellow fluorescence emanating from the small dot created by the laser
Argonite crystals - the laser digs into the specimen and caused it to glow from within...
The real test is how it works in daylight. The pics above were taken around noontime (bright sun). The one on the left shows an area of sodalite fluorescing under the beam. On the right the beam is focused on a non-fluorescent area of the mineral. In the pic the non-fluorescent area shows up as a violet bright spot, but this is due to the camera's sensitivity to the light. Your eye barely discerns a small dot. But the area of sodalite glows a bright orange - unmistakeably a fluorescent mineral!
So - I have a small powerful "UV light" which I can carry in my shirt pocket and pull out at a moment's notice. If I detect glow rocks then I can decide if I want to pull out my SW UV light and do some serious exploring. I have great expectations...
One cautionary note: These things are dangerous! Deadly! The light is very faint but make no mistake; as my pics shows, the beam is powerful and can easily blind a person - probably in milliseconds. Reflections from sharp crystal faces can do damage. It is not a toy.
Sunday, February 24, 2008
Hammers, Chisels other Instruments of Destruction, More on Gear...
We've had a few emails discussing additional gear, hammers, and such....
Fly Vest - A great general purpose "pocket" vest allows you to carry cameras, batteries, small rocks, and other often needed items while hiking in a quickly accesable pocket. Bigger pockets are great for carrying battery packs. For this year I am considering a photographer's vest. It has less pockets (but bigger) than a fishing vest (I really don't plan on carrying dozens of lures, flys, hooks, etc) and seems somewhat sturdier. I carry my battery packs in this vest instead of on a belt so the vest has to be sturdy. Pants (cargo?) with pockets are handy also - by the time you get to the top of the mountain you'll have little rocks stashed everywhere - wondering if they glow....
Safety glasses - probably a very good idea, I wear glasses and find that they protect me well. You'll be hammering a lot of big rocks, with chips flying everywhere, plus - under your UV viewing tent the UV light can burn your eyes quickly.
Water bottle - I find that the Camelpaks work really well; very handy for drinking on the way up. But you'll still carry extra bottles of water most likely; they can be purchased at the local stores. You will need plenty of hydration. I usually refill my water from the snow-melt when in the mountains.
Hammers and Chisels - I buy all my hammers at Home Depot (and chisels). I find that fiberglass handles are the best; they are strong, but absorb the blows much better than metal handles. Wood is also fine. I would bring at least a 3 LB hammer, up to 6 LB with a 12" to 16" handle. You will be breaking big rocks and need something with some weight (but remember, you have to carry it up the mountain). We intend to have some big sledge hammers placed at a couple of strategic spots for those heavy duty boulder busting jobs. The photo shows my favorite hammer; it has a hammering face, and a chiseled face. Using two hammers (one to hit this one while holding it in place) can be very effective in busting boulders without busting your hands. The chiseled edge directs the blows onto the rock so that you will hopefully get a break in the direction you wish (not simple with Greenland rocks).
Chisels - absolutely get the kind with the hand guard - two each would be best. These are "throw aways" as they will not last the trip; the hills are filled with broken chisels. A nice 1" to 2" blade works best. (IMHO).
Chisels are used to wedge open cracks in large "in-place" rock, pry off big chunks, and for trimming. They don't last long! Sometimes they're just left in place after you've gotten them so wedged in that you can't retrieve them.
I don't like the Estwing type hammers (right). The bigger ones (crack hammers) are all metal and hard on my wrist/lower arm. The smaller geologist types are pretty much useless (but they make good chisels with a handle - for about three blows). The rocks we will encounter are big, ugly and damn hard. A little hammer is useless.
Sunday, February 17, 2008
Got my Backpack "System" this weekend
For the past couple of years I've had a very large pack but it's finally worn out (amazing what carrying 20 kilos of rocks in a backpack can do !). This year I opted for a smaller pack, but much sturdier - along with a 2nd "side pack" for light, batteries and UV tent. I figure there are a couple of advantages to this: the smaller backpack will keep weight off my back, less bumping while walking, and is much sturdier than previous packs I've owned. The smaller side pack will work well as a "carrier" when working a prospect (hammer, chisel, light, battery, etc) - I can just leave the big pack and wander around with the smaller pack. Plus - keeping the necessary items close at hand on the way up will allow me access to quickly needed items without having to take off the big pack and search for stuff. This should be really handy as you are always tempted to stop at many spots "on the way" to check out a rock that just looks like it should glow.
These packs are from Maxpedition. "MAXPEDITION Hard-Use Nylon Gear is designed and constructed to withstand extreme conditions; in other words, we expect you to USE IT HARD in demanding situations and environments. Our company originated as a builder of premium-grade military equipment...". I think they're right. The material is very strong nylon, with a doubly strong bottom (the floor of your pack takes the biggest beating from the rocks inside, as well as abuse from dragging). It's filled with rows of strap holders (molle system) so you can customize it with all kinds of accessories (additional pockets, holders, etc). It also provides for a hydration system to carry a 100oz Camelbak.
The smaller side/front carry pack has room for batteries, my UV tent, chisel, GPS, camera, and I can clip my light to it. Thus I have everything I need on the way up right at my fingertips; I don't have to rummage in the big backpack everytime I want to check out a spot.
I like the smaller size and distribution. You don't really need that much space unless you're gonna be carrying lots of camping gear. And too much space tempts you to carry too many rocks - a serious problem in Ilimaussaq. I do have to solve one problem - there's really no straps for carrying my sleeping bag, but with the modular approach I can add straps and mount my bag to the bottom. All my other camping gear will fit nicely inside the main enclosure.
I also decided to try out a "Rollypoly" dump pouch. This is an expanding pouch which attached to your webbing, or mounts on a belt. It's nice and compact when rolled up, and expands into a big carrying bag unfolded.
Not sure how well this will work - a big load of rocks might not carry too well, but it might be nice for carrying equipment around from spot to spot - we'll see.
So - I'm now ready to pack my gear, adjust my straps, and get some experience with my new setup. I plan on hiking up and down my hill here in TN everyday for the next few months - fully loaded. My driveway is about the same as hiking the Taseq Slope; the rocks just aren't as interesting. But it will get me in great shape and allow me to figure out the best way to pack and carry for prospecting in Greenland.
Onward to GL08!
Thursday, February 14, 2008
Romancing the Stone
Inuit legend attributes tugtupite to “Tutu” - the reindeer girl. Tutu went to the mountains to give birth to her first child and during birth the miraculous life-giving bloods seeped into the mountain stones and created tugtupite. Thus it is known for life, romance and fertility....
(A painting done by a local artist, hanging in the lobby of the Narsaq Hospital, showing Tutu in the moutains giving birth)
What is tugtupite?
Tugtupite is one of the world’s few deep red gemstones, often translucent, and always brightly fluorescent. Often referred to as the "king of fluorescent minerals", it is known worldwide for its beauty under ultraviolet light. When exposed to UV light (or sunlight) the color deepens, sometimes to an almost grape color (a tenebrescent property). This color change can last for weeks, and is easily restored simply by exposure to sunlight.
Gem quality tugtupite is among the rarest of gemstones, only found in remote areas of Greenland - and always in small quantities. In high demand by collectors, the finest specimens are almost always reserved for jewelry. Tugtupite is only found in three areas in the world - Greenland, MSH, Canada, and Kola, Russia. It was first discovered in Greenland in 1957 (by European geologists - the Innuit had known about it for hundreds of years). The mines are located high in the mountains surrounding the fjords in an area known as the Ilimaussaq Complex - a unique geological formation approximately 8km x 20km in area. Greenland is the only supplier of gem quality tugtupite and is the only area where sufficient quantities can be found to supply the gem market with enough material to make this a marketable gemstone. Access to the mines is only by foot (and boat), and the rough material must be carried down the mountain by backpack. (There are no roads in Greenland even interconnecting cities, much less to the remote mountain areas.) The difficulty in finding gem quality specimens, mining them, and then porting them out of the mountains only adds to the value of this extremely unique, rare and beautiful gem.
Wednesday, February 13, 2008
The weather, camping, and collecting
In Greenland the weather rules. Everyday we make the "plan du jour"; to attempt to do it ahead of time is futile. After 8 years of tours and collecting there is one thing I am certain of - you cannot be certain of Greenland weather. In the past 8 years we have had three years (2004, 2006, 2007) which were very soggy years. The other 5 ranged from exquisite sunny weather to overcast. Even during the soggy years we collected most everyday. Rain in Greenland is not like it is here - it is more of a misting than a hard rain. (Peter called me one time last summer all excited; he had seen lightning for one of the first times in Narsaq). But the rain does make the rocks very slippery, and the mountain streams rise sometimes to the point where we cannot cross. (we are working on a solution for that).
Why go to Greenland for Fluorescent Minerals?
Ilimaussaq Complex, South Greenland - In the past seven years a new locality has come to light (pun intended). The Ilimaussaq complex in Southern Greenland has been a famous center for geological exploration for hundreds of years. As early as 1806 mineralogists were exploring the unique geology of the complex; since then over two hundred minerals have been identified within the intrusion. Many are only known from a few areas in the world, and at least ten are unique to Ilimaussaq. The complex is also the type locale for dozens of species. But perhaps the most amazing fact (to a fluorescent collector) is that until 2000, Greenland’s only real claim to fame in the “glowhound” world was Tugtupite!
Today there are over 15 different fluorescent minerals identified, and scores waiting to be identified. The brightness of these pieces, along with many beautiful multi-color combinations, rivals those from Franklin. Many pieces exhibit dramatic phosphorescence or a remarkable tenebrescense (color change) found in few other minerals. No literature exists describing the fluorescence of the various minerals within the complex; few people have even brought a UV light to the area! Yet these minerals simply lie there – waiting for the venturous collector to shine a light on them and find the hobby’s next rarity! Fluorescent collecting in Greenland must be akin to collecting in Franklin in the old days; exciting, productive, and simply fascinating.
But – Greenland isn’t just a matter of hopping on I-95 and driving a couple of hours. Greenland is located just north of the location where the Titanic sank. Primarily an island covered in ice (the world’s largest island – even if it is mostly ice), the coastline actually has strips of green in the summer months (Erik the Red named it Greenland after he was booted out of Iceland – the ultimate deception people say, just to make others want to move with him!). Southern Greenland is “warmed” by the Gulf Stream and in the short summer months (June to September) averages in the 50’s to 60’s. But even during these “warm spells” one is amazed at the majestic icebergs floating in all the harbors and fjords, the glaciers, and the lingering snow covering that elusive piece of tugtupite.
Greenland was very much a part of Denmark until 1979 when a “Home Rule” Government was established, insuring that the culture and Greenland way of life would not be lost. Denmark still plays a major role in Greenland’s government, but the Greenlandic people control their destiny. They are a proud, self-sufficient people. Living off the land, they are great hunters and fisherman, and very proud of their natural resources. Greenland is one of the few undeveloped natural wonders left on earth one can visit and still experience nature’s beauty and solitude at her finest – without a single worry about terrorism, violence, or crime.
Getting to Greenland can be interesting. In 2003 Air Iceland opened a route to Southern Greenland making things a little easier – they fly twice a week (weather permitting) to Narsarsuaq (the only major airport in South Greenland). The only other way to get there is to fly all the way to Copenhagen (Denmark) and then fly back to Greenland (not a lot of fun), or to fly into an airport way up north and take "dgo sleds" down south (not entirely accurate, but might as well be). If the Greenland weather interferes flights might be diverted to Stromfjord Airbase in northern Greenland (or just sit in Reykjavik) to wait until it clears up. This is the first lesson in travel to Greenland – the weather rules. Thankfully, the summer months are usually quite cooperative.
Once in country the adventure begins. There are no roads connecting the cities (there really aren’t any cities either). The larger settlements have roads in town, mostly so people can drive down to their boats – the main mode of travel. Flying into Narsarsuaq (a bustling airport town of 200 people) one can travel by ferry or private boat to Narsaq; home for the next week while exploring the Ilimaussaq Complex. After this trip, one has an appreciation for the passengers on the Titanic as they traversed the ice filled waters of the North Atlantic.
Narsaq is a small village located about 16km outside the Ilimaussaq Complex. The people are used to geologists traveling there from all over the world. Several excellent guesthouses are available – one even has a restaurant! All have cooking facilities and you can cook up your own meals. There are two grocery stores in town stocked with the best shrimp, salmon, trout, lamb, whale, and seal around – all within easy walking distance. The locals speak Danish and Greenlandic and have a (reluctant) grasp of English. But most of all, they are friendly and quick to help in anyway they can.
Travel to/from the various areas within the Ilimaussaq complex is by boat or 4-wheel drive truck. An old road leads to the famous Kvanefjeld area (Tugtupite mines) and the Tasaq slopes. Other parts of the complex are accessible only by boat. Many of the locals will ferry people to various touristy type areas in the summer months for a reasonable fee.
The area is a large sprawling complex spanning several fjords and mountains. A road (or boat) only gets you to the base of the collecting areas. One must be prepared to hike up old river beds, climb slopes, and even do some relatively rugged climbing to get to some of the more productive areas. The maximum elevation is around 700 meters and usually easy to traverse. There are two major impediments to climbing: 1 - Rocks are everywhere! 2 - Everything glows! – it simply takes too long to get to the top because the climbers get lost collecting on the way up!
Boat Travel around Ilimaussaq
These trips are great opportunities for photos; the scenery is fantastic. Occasionally we will find ourselves navigating dense ice fields as the ice gets blown out of the fjord north of Narsaq and into the boating channels. Peter (our captain) is adept at navigating this ice, but it can still be cause for some anxious moments. I have over 30 years of boating experience in South Florida, but Peter still won't trust me to drive; "Black Ice - you must watch for the black ice!". He tells stories of icebergs barely poking out of the water, crystal clear such that they appear black (invisible). Hit one of those and you'll be launched out of the water just like a scene from Miami Vice!
Our daily plans are made each morning - according to the weather. We look for good boating weather and take advantage of it every day we can. The weather in Greenland is quite unpredictable and can change instantly. Winds blow up the fjords and create heavy seas which are impossible in a heavily loaded boat. Those days we spend our time in the Kvanefjeld area which we can access by 4-wheel drive.
Those who are interested can also make side trips by boat to the Ice Pack and glaciers, or to the Norse Ruins. A day spent fishing can be a wonderful break from the rigors of hauling rock.... There are several guides in Narsaq who will provide you with a wonderful day on the water.
Tuesday, February 12, 2008
The Proper Gear
Stream Crossing
Originally uploaded by MinerShop
We must be prepared for all kinds of weather. In the past 7 years we have experienced hot sunny days, wet rainy days, and even hurricane force winds. A couple of those years it rained almost the entire time we were in Greenland, while other years we could not have asked for better weather. Rain gear is a must, good waterproof footwear, and cold-weather clothing. If we are unlucky enough to have another wet summer be prepared for some tricky stream crossings. The pic above shows one year when we used waders, but now we know better and will try to construct some temporary bridges. In dry years it's a simple matter of hopping across rocks to get over this glacial fed stream (but still cold if you fall!).
A good backpack is a necessity; make sure it fits your frame and is not too big and bulky. Layers also very important; we will start out when it is cold (mid 30's) and it will warm up to the 50's as the day progresses. Nights can dip below freezing in the mountains.
Icebergs - up close and personal
Icebergs - up close and personal
Originally uploaded by MinerShop
Even in July it can get pretty cold. This photo was taken from our boat as we navigated a field of ice just outside Narsaq harbor. In recent years the ice seems to have increased - probably another sign of climate change and the rapid decline of the glaciers?