AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from England > Calcite on Fluorite

Calcite on Fluorite from Boltsburn Mine, West Side, near the forehead, Rookhope, County Durham, England

Photo below under shortwave ultraviolet illumination:

Photo below under longwave ultraviolet illumination:

DESCRIPTION:	No. 75128
Mineral:	Calcite on Fluorite
Locality:	Boltsburn Mine, West Side, near the forehead, Rookhope, County Durham, England
Description:	Lustrous transparent blue-gray cubic fluorite crystals to 18 mm with overgrowth on select faces of lustrous transparent colorless calcite crystals to 3 mm with minor small brown siderite and metallic galena crystals. Collected in 1937. Fluoresces bright violet under 365 nm LW UV illumination and under 254 nm SW UV illumination
Overall Size:	6.5x3.5x3.5 cm
Crystals:	micro to 18 mm
Archived:	For reference only

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