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Sphalerite (Spinel-law twinned) from Casapalca District, Huarochiri Province, Peru

 
Sphalerite (Spinel-law twinned) from Casapalca District, Huarochiri Province, Peru

Sphalerite (Spinel-law twinned) from Casapalca District, Huarochiri Province, Peru

Photo below under shortwave ultraviolet illumination:
Sphalerite (Spinel-law twinned) from Casapalca District, Huarochiri Province, Peru

DESCRIPTION:No. 42656
Mineral:Sphalerite (Spinel-law twinned)
Locality:Casapalca District, Huarochiri Province, Peru
Description:Spinel-law twinned tetrahedral black sphalerite crystals on massive sphalerite matrix. The sphalerite crystals fluoresce yellow-orange under SW UV illumination. Ex. Steve Chamberlain collection #4802, acquired in 1981
Overall Size:8x5x3 cm
Crystals:2-10 mm
Status: Sold - Posted here for reference only
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