Calcite with Malachite and Azurite Richard A. Kosnar and to the best of

and to the best of my knowledge

The pegmatites near the Lake George area of Colorado have produced what most collectors and dealers consider to be the finest Amazonite specimens from the standpoint of superb color

one of the most popular non-sulfide or non-carbonate species from the Eagle mine are the now hard to find

The Black Cloud Mine was one of the most famous specimen producing locales in Leadville and was one of the last operating mines in Colorado when it closed in 1999

antimony sulfosalt Franckeite consisting of somewhat "sword"-shaped crystals oriented into spherical aggregates which are sitting on matrix

Calcite with Malachite and Azurite Richard A. Kosnar and to the best ofOne of the best crystallized Calcites that I have seen from the Copper Rivet Mine, located several miles north of the Cashin Mine, along Slat Creek, west of Highway 141. This lesser known locality apparently produced some specimens in the late 1990s when a few enterprising individuals were able to liberate pieces in their free time. I havent seen many Copper Rivet specimens on the market, and they typically arent much to look at, but this piece hosts