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Tamar Valley Mine (Buttspill Mine), Bere Alston (Beeralstone), Tavistock District, Devon, England, UK

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Fluorite : CaF2, Sphalerite : (Zn,Fe2+)S

Tamar Valley Mine (Buttspill Mine), Bere Alston (Beeralstone), Tavistock District, Devon, England, UK

Fluorite on black sphalerite on a rock groundmass.
The piece is approx 30 x 30mm
Chris Popham specimen & photo 2007
 © Chris PophamPhoto ID: 109794    View Count: 112

Fluorite : CaF2, Sphalerite : (Zn,Fe2+)S, Quartz : SiO2

Tamar Valley Mine (Buttspill Mine), Bere Alston (Beeralstone), Tavistock District, Devon, England, UK

A big fluorite crystal on a ground mass of black sphalerite and grey/milky chalcedony quartz.
The piece is about 35 x 25mm
Chris Popham specimen & photo 2007
 © Chris PophamPhoto ID: 109790    View Count: 97

Galena : PbS, Quartz : SiO2, Fluorite : CaF2

Tamar Valley Mine (Buttspill Mine), Bere Alston (Beeralstone), Tavistock District, Devon, England, UK

Very rare galena in a matrix of mostly quartz with a little fluorite.
view approx 25 x 20mm
Chris Popham specimen & photo 2007
 © cPhoto ID: 109799    View Count: 130
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