AllMinerals/JohnBetts-FineMinerals > Online Mineral Museum Photographic Archive > Minerals from England > Fluorite (interpenetrant-twinned crystals) and Calcite

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Fluorite (interpenetrant-twinned crystals) and Calcite from Weardale, County Durham, England

 
Fluorite (interpenetrant-twinned crystals) and Calcite from Weardale, County Durham, England

Fluorite (interpenetrant-twinned crystals) and Calcite from Weardale, County Durham, England

Photo below under shortwave ultraviolet illumination:
Fluorite (interpenetrant-twinned crystals) and Calcite from Weardale, County Durham, England

DESCRIPTION:No. 52323
Mineral:Fluorite (interpenetrant-twinned crystals) and Calcite
Locality:Weardale, County Durham, England
Description:Exceptionally transparent lustrous green fluorite crystals to 8 mm on one face of matrix with translucent gray calcite crystals to 4 mm scattered throughout. The fluorite crystals are all interpenetrant-twinned and fluoresce violet under UV illumination. Collected ca. 1920; acquired in 1998 from Lawrence H. Conklin (1933-2016)
Overall Size:8x7x4 cm
Crystals:1-8 mm
Archived: For reference only

 

 

 

 

 

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