Fluorite with Calcite

The fluorites that have come out of the Diana Maria have continued the legendary and storied Rogerley finds into the present. The Diana Maria is a set of mineralized cross-veins, running east/west, which were exposed in the workings of the western extension of the Rogerley quarry. The fluorites are the deepest of emerald green, incredibly gemmy, and most are twinned. The offsetting white mounds of finely crystalized calcite frame the specimen.

Locality: Queen of Green Pocket, Diana Maria Mine, Weardale, Durham, England

Composition: calcium fluoride