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…

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.…