Bright Green Rogerly Fluorite
John Betts - Fine Minerals
Transparent green cubic Fluorite crystals completely coating one face of matrix. Several Fluorite crystals are twinned, others have whitish cloud-like surface inclusions. All fluoresce violet under UV illumination. The crystals grew in a constricted vein preventing complete crystal development.
Rogerley Mine, County Durham, England.
11 x 8 x 4 cm.