Fluorite from Hastie's Quarry, Illinois TD3973 astrophyllite The unique geological conditions in

The unique geological conditions in the region have given rise to calcite formations that exhibit intricate twinning patterns and stunning optical properties when exposed to light

Visually speaking

plant matter

due to its stunning range of green hues

Tinghir Province

Fluorite from Hastie's Quarry, Illinois TD3973 astrophyllite The unique geological conditions inFluorite from Hastie's Quarry, Illinois Approx. Dimensions: 3x3x1. 5 inches Approx. Weight: 244 grams Locality: Hastie's Quarry, Hardin County, Illinois Fluorite from Hasties Quarry (Hardin County, Illinois) is a prized North American mineral because it is one of the few remaining sources of "new" fluorite from the famous Cave in Rock District. While most major mines in the area closed decades ago, Hastie's is an active aggregate quarry that produces