|Searching for & finding gold in the Silver Crown district in Wyoming in 2012.|
All of those valuable gemstones and gold found in rocks are related to chemistry of the rocks, invading fluids, and geological history. For example, if you look for gemstones with considerable aluminum - such as ruby and sapphire - look for host rocks that have lots of aluminum (mica-rich schists, etc) to contribute; or evidence that aluminum-rich fluids migrated through fractures. Then look at the past geological history - how deep were the rocks buried in the past (if at all), when did they uplift, how much erosion occurred, etc. I know this type of information is difficult to come across, but any clues will help.
|The GemHunter spent more than 30 years searching the hillsides for|
gemstones and gold in Wyoming for the Wyoming Geological Survey
as well as for several mining companies in and outside of Wyoming. He
was the most successful geologist in the history of Wyoming for making
new discoveries and published around 1000 books, magazine articles,
maps, professional papers and abstracts. Now you can have your own
consultant - in a book! This 369-page book tells you where and how to
find gemstones in Wyoming and in some nearby areas. In many
cases he gives you GPS coordinates to find these sites on Google Earth.
When you are ready to take a weekend field trip, all you have to do
is convert the GPS coordinates to your hand held GPS unit and it will
lead you to hundreds of gemstone and gold deposits. Already, many
people have reported finding gold, labradorite, jasper, agate, opal,
rubies, sapphires, iolite and diamonds by using this book. And one
person even panned out many diamonds including one of the largest
ever found in Colorado - weighing about 5 carats! So, why wait for
everyone else to find the treasure that could be yours. To convert your
Google Earth GPS coordinates to your hand held, just click on the
GPS conversion box at the top of the Gold Prospecting blogspot.
It is interesting that the Copper King is deeply eroded based on its geological history - and so are the kimberlite pipes in the Colorado-Wyoming State Line district to the west along Highway 287 as well as the cryptovolcanic structures that lie in between. So, you might take a gold pan, find some public access, and then pan for gold and diamonds. Both will likely be found in a drainage or two in the area. And yes - I know most are dry drainages, so you may have to transport some dirt to water, or vise versa, or learn how to dry pan. When I taught prospecting short courses through the School of Extended Studies at the University of Wyoming, I periodically taught this technique. It works great in Wyoming because of all of the wind, but it also leaves you very dirty. So why hasn't anyone done this before? Good Question.
Not far from from the Copper King, I identified more than 50 cryptovolcanic structures that likely include one or more kimberlite pipes for an Australian diamond company (DiamonEx). Many kimberlites are known as sources of gem and industrial deposits. To see some of these structures, just use Google Earth and do a search for Twin Mountains Lakes, Laramie County, Wyoming and you will see an area on the areal photography that shows a major regional fold in the old Precambrian rocks with several, distinctly rounded to elongated lakes. Google Earth also provides different ages of photography, so take a look at the 1999 and 2002 vintage photos and you will see the lakes have what appears to be a white salt in the soil. If this is carbonate - it may have been derived from kimberlite as the old, folded Precambrian rocks are a poor source for calcium carbonate. You can test soils like these with 10% hydrochloric acid and the acid will free carbon dioxide and the soil will fizz like soda pop! But beware, our incredibly non-intelligent government expects to outlaw carbon dioxide. Seems that politicians are looking to fill their pockets with money over carbon credits.
So, how dangerous is this carbon dioxide - you tell me the next time you drink a soda, exhale, or walk outside among the trees and grass. How is it that we keep electing dumber and corrupter politicians? Ha! Its because the only people who run for office are sociopaths and pathological liars. Back to the rocks. I found similar depressions (structurally controlled all over this region in Colorado and Wyoming - actually more than 300!
|Large microcline feldspar crystal from Copper Mountain in the Owl Creek|
Mountains of Wyoming. Although this crystal is white, many of the feldspar
crystals in the State Line pegmatites are pink to brown orthoclase feldspar.
So, what is a crypto volcanic structure? It is a structurally controlled depression that looks similar to an impact feature. And, who knows, some could be impact features. Years ago, I looked at one such anomaly in Kansas known as the Winkler Crater. This feature (39°29'25"N; 96°49'13"W) was initially identified as an impact crater until Doug Brookins spent some time on the ground and discovered the crater was filled with kimberlite instead - so it was a kimberlite pipe (volcano). Years later, Cominco American Mining Company tested the pipe and reported finding one micro-diamond in the kimberlite. And you can still see this anomaly on Google Earth. It is perfectly round, has a deeper green color due to the vegetation growing over the kimberlite, and you can still see the scars of the trenches dug in the kimberlite by Cominco American many years ago.
|Smaller microcline feldspar crystal from Copper Mountain.|
Anyway, in some of these pegmatites, you will also find some coarse-grained mica books, rare yellow-green, translucent to frosted beryl, and an occasional garnet - I found one crystalline garnet in the pegmatite off of Highway 287 that was 6 inches across - but the color and transparency were ugly! But the quartz is interesting. Periodically, one can find small, transparent, hexagonal quartz prisms in rock fractures, but most of the quartz is the bull quartz. The bull quartz in these pegmatites express piezoelectric characteristics very well.
Of course, someone will think you are totally crazy for doing this - but what the heck. Most of us rock hounds are a bit nuts. Take a large piece of the bull quartz in a dark closet (large so you don't miss and smash your toes) and hit it with a hammer. You will be able to see a very nice spark generated within the quartz. Pretty neat! But again, whoever gets curious and opens your closet door is probably going to call for a straight jacket.
Hope this blogspot helps you find a treasure - and in the following pages, I tell you about jasper, agate, and quartz. So, go fill up your back packs and let me know when you find a diamond or two or a few nuggets, but respect the private land owners - The GemHunter