AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from England > Fluorite (twinned crystals) with Siderite

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Online Mineral Museum Archive of Mineral Photographs and Mineral Descriptions from John Betts - Fine Minerals.com and Allminerals.com

   

Fluorite (twinned crystals) with Siderite from Boltsburn Mine, Rookhope, County Durham, England

 
Fluorite (twinned crystals) with Siderite from Boltsburn Mine, Rookhope, County Durham, England

Photo below under shortwave ultraviolet illumination:
Fluorite (twinned crystals) with Siderite from Boltsburn Mine, Rookhope, County Durham, England

DESCRIPTION:No. 24468
Mineral:Fluorite (twinned crystals) with Siderite
Locality:Boltsburn Mine, Rookhope, County Durham, England
Description:Twinned crystals of purple fluorite up to 4 cm with minor overgrowth of brown siderite crystals up to 2 mm. The center portion is internally flawless (facet-grade). Fluoresces bright violet under UV illumination. Acquired ca. 1970. Some edge chipping. Ex. L. Russianoff collection
Overall Size:6x4x3 cm
Crystals:1-40 mm
Archived: For reference only

 

 

 

 

 

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