Pyrite on Stilbite from Kazakhstan TF2227 bob ross This is a wonderful specimen

This is a wonderful specimen of light green fluorite from the Vtoroy Sovetskiy Mine in Russia

Copper mining in Michigan's Upper Peninsula has a rich history dating back over a century

with calcite and quartz perched atop

The Tyndall effect is also the reason why blue chalcedony appears yellow or brown when strong light shines through it

Pyrite on Stilbite from Kazakhstan TF2227 bob ross This is a wonderful specimenPyrite on Stilbite from Kazakhstan Approx. Dimensions: 2. 25x2x1. 25 inches Approx. Weight: 67. 8 grams Locality: Sokolovskoe Iron Mine, Kostanay Province, Kazakhstan This is a unique specimen we acquired out of a very small parcel of specimens from a gentleman that collected them in Kazakhstan. It features very bright pyrite coating white stilbite.