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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Genthelvite from
Coire an Lochain, Fort William and Ardnamurchan, Highland, Scotland, UK


Locality type:Lake
Classification
Species:Genthelvite
Formula:Be3Zn4(SiO4)3S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Genthelvite data
Locality Data:Click here to view Coire an Lochain, Fort William and Ardnamurchan, Highland, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:5560
Long-form Identifier:1:3:5560:4
GUID (UUID V4):0
References
[Specimen in the Natural History Museum, London]
Morgan, W. C. (1967) Genthelvite and bertrandite from the Cairngorm Mountains, Scotland. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (277) 60-63 doi:10.1180/minmag.1967.036.277.08
Clark, A.M. and Fejer, E.E. (1976) Zoned Genthelvite from the Cairngorm Mountains, Scotland.
Clark, A. M., Fejer, E. E. (1976) Zoned genthelvite from the Cairngorm Mountains, Scotland. Mineralogical Magazine, 40 (314) 637-639 doi:10.1180/minmag.1976.040.314.11
Embrey, Peter G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine, 42 (322) 169-177 doi:10.1180/minmag.1978.042.322.01
 
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