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

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

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

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

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

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

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

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

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

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

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

Photo below under shortwave ultraviolet illumination:
Calcite on Fluorite from Boltsburn Mine, West Side, near the forehead, Rookhope, County Durham, England

Photo below under longwave ultraviolet illumination:
Calcite on Fluorite from Boltsburn Mine, West Side, near the forehead, Rookhope, County Durham, England

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
Status: Sold - Posted here for reference only
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