Calcite on Fluorite

Mike purchased this specimen in 1995 from Neil Pfaff (M Phantom Minerals included). I am tempted to keep it, as it exemplifies how wonderful a good Minerva Calcite can be. Deeply color saturated and difficult to find any cleaved tips at all. The bed of Fluorite pokes out just enough to provide color relief. With a strong backlight the Fluorite shines through. Ex Mike Wortham

Locality: Rosiclaire Level, Minerva #1 Mine, Cave in Rock District, Southern Illinois

Composition: calcium carbonate