|Diamondiferous kimberlite from the Sloan 2 pipe in Colorado. Note the large, rounded pyrope garnet. The Sloan kimberlites have identified diamond resources and remain mostly untouched. DiamonEx had acquired the Sloan property in 2007 under my direction, but the 2008 economic collapsed took its toll on world diamond prices, the company, and the world. The property was abandoned by DiamonEx, yet it likely still encloses hundreds of $millions in diamonds.|
|Kimberlite (Devonian) and Granite (1.4 billion years old) contact exposed
by bull-dozer, Schaffer kimberlite complex, Wyoming.
Note how sharp the kimberlite contact is and there is no
evidence that the granite was baked.
|Buried kimberlite dike in Wyoming – the kimberlite underlies
the dirt in the right half of the photo where there appears to be
thicker and slightly higher vegetation.
|Diamonds in the US? From Diamonds and Mantle Source Rocks in the Wyoming Craton – by W. Dan Hausel, 1998. The diamond-shaped figures represent reported diamonds. The triangles are kimberlite localities (open triangles are diamond-bearing kimberlites), squares are high-pressure volcanics similar to kimberlite, + are lamprophyres and lamproites, the + enclosed by a diamond is diamond-bearing lamproite, the white diamond is the location of the Great 1872 Diamond Hoax site, the dots represent kimberlitic indicator mineral anomalies of note.|
|Some of the high-quality gem diamonds from Kelsey Lake mine (photo courtesy of Howard Coopersmith).|
|Close-up of diamond surface with some of the distinct trigons etched in the
surface. Don’t know how to identify diamonds? Its not all that difficult. If
you do not have a background in mineralogy, all you need is the
Diamond Detector – you can even make your own.
|Popular book (129-pages) on diamonds in the US – you might be able to buy this at the Wyoming Geological
Survey at the University of Wyoming- but I recommend downloading it for free from my website.
|Book on rocks and minerals that also has brief information on diamonds and on kimberlite and
lamproite. Available at Amazon
|Another popular book on gemstones (and diamonds) that the Wyoming Geological Survey forgot to reprint after the current edition was sold out. Photo by Wayne Sutherland.|
|Gem kyanite from central Laramie Mountains (we found billions of
carats of this gem – but it remains undeveloped).
Some of this gem is found with iolite, ruby and sapphire
in the central Laramie Mountains.
|Booklets on diamonds from the wyoming geological survey (photo by Wayne Sutherland).|
|Free pamphlet on diamonds – this may still
available in Wyoming. If not, you can
download a copy at the GEM HUNTER website.
|Rough diamond from Wyoming – wow, aren’t
these stones beautiful! Note how the gem has kind of a
greasy luster. This is characteristic of diamond.
Recent publication on geology of the Leucite Hills lamproites and possibilities of diamonds in the Leucite Hills lamproites in Wyoming (may or may not be available at the Wyoming Geological Survey). I loved working in this area. While conducting research on diamonds, we recovered diamond-stability chromites from some of the lamproites (this suggests the chromites formed under pressures and temperatures similar to that of diamond formation; thus there is a possibility for diamonds in this region).
Essentially all of the projects at the Wyoming Geological Survey were so underfunded, its amazing we found anything. Even though these rocks may contained diamonds, we were unable to test any material (other than a couple of rocks). Elsewhere in the world, there is a correlation between olivine and diamond content in some lamproites, so I was excited to find a couple of anthills with considerable olivine in the northeastern portion of the Leucite Hills. After looking at some olivine with a hand lens, it was apparent nearly all was gem-quality. So I took the two anthills in sample bags – and Robert Gregory processed the material (no diamonds were found), but we recovered 13,000-carats of gem-quality peridot from this sample!
|Ruby from Granite Mountains, Wyoming. Specimen found by Eric Hausel.|
|Book (42 pages) on a little known diamond-bearing kimberlite district in Wyoming. We didn’t find any diamonds (found lots and lots of diamondbacks) – nor did we test any material for diamonds. However the geochemistry of all of the rocks showed that they all originated from the diamond-stability field and a couple of diamonds were reportedly found in the early 1980s by Cominco American.|
|Guide to finding gems, gold, diamonds and rocks in Wyoming. If you can’t find it at the Wyoming Geological Survey, you can download a copy from the GemHunters website.|
There are many gemstones in Wyoming. Most people would have laughed if you told them in 1975 that Wyoming had the greatest variety of gemstones in the US. In 1975, Wyoming had known jade deposits and some agates – but that was about all.
Over three decades, the more I looked, the more I found: dozens of overlooked gemstone deposits and evidence for hundreds more which included commercial gold deposits along with more than 100 gold anomalies. It was my intention to continue this research along with educating the public to help YOU find gemstones, diamonds and gold using methods I found successful in finding a few hundred mineral deposits.
But morally and ethically, I could no longer work for the Geological Survey or the State of Wyoming, so I moved on. Since 2006, there have been no discoveries of new metal or gemstone deposits.
|My latest book includes information on diamonds and
kimberlite. Find it at Amazon.