Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Krupkaite from
Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK


Locality type:Mine
Classification
Species:Krupkaite
Formula:CuPbBi3S6
Comments:Cooper & Stanley (1990): "Electron microprobe analyses (by CJS) of a mineral replacing bismuthinite in a telluride-rich specimen (BM(NH)) give a formula consistent with that of krupkaite. Grains are minute (30-60µm)."
Confirmation
Validity:Confirmed
Confirmation Methods:EPMA
Data
Mineral Data:Click here to view Krupkaite data
Locality Data:Click here to view Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:6714
Long-form Identifier:1:3:6714:0
GUID (UUID V4):0
References
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
Day, Harry (1999) BMS Database, British Micromount Society.
 
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