In the late fall of 2014, the author published a new book published by CreateSpace an Amazon company, describes dozens of colored gemstone, diamond, gold and other minerals and rocks.…

Geology of Gemstone Deposits

Large chlorite pseudomorph after garnet found in the Sierra Madre Mountains, Wyoming. The chlorite slowly replacedthe garnet and accepted the garnet’s crystal form.  Much of Wyoming is underlain by Archean…

OPAL

A rockhound from Riverton mentioned opal south of town. The Cedar Ridge deposit lies along the highway & is cut by numerous oil field roads, no one had recognized that…

IOLITE (WATER SAPPHIRE)

A 16-carat iolite from Palmer Canyon, Wyoming. I discovered iolite (water sapphire) at Palmer Canyon in 1995. The iolite occurred with gem-quality kyanite in mica schist & gneiss adjacent to…

RUBY & SAPPHIRE

Ruby & Sapphire are beautiful stones. In 1995, I discovered my first ruby-sapphire-corundum deposit mixed with iolite & kyanite at Palmer Canyon west of Wheatland. After I recognized this association…

GEMSTONES & GEOLOGY

A good understanding of geology, persistence & some luck can lead to incredible treasures. In 1977, I started work as a research geologist at the Wyoming Geological Survey in Laramie.…

Major Diamond and Colored Gemstone Deposits Found in US

MAJOR DIAMOND PROVINCE DISCOVEREDsee GEMHUNTER See also http://DiamondProspector.webs.com State Line Kimberlite Province showing locations of (1) Radichal kimberlite &Mineral Indicator Anomalies, (2) the Iron Mountain kimberlite district, (3) Schaffer, Aultman, Ferris…