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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Alkali-beryl from
Kolum pegmatites, Nilaw-Kolum pegmatite field, Nuristan, Afghanistan


Locality type:Pegmatite Field
Classification
Species:Beryl var: Alkali-beryl
Formula:Be3Al2(Si6O18)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Alkali-beryl data
Locality Data:Click here to view Kolum pegmatites, Nilaw-Kolum pegmatite field, Nuristan, Afghanistan
Data Identifiers
Mindat Occurrence Record ID:714005
Long-form Identifier:1:3:714005:1
GUID (UUID V4):0
References
Orris, G.J., Bliss, J.D. (2002) Mine and mineral occurrences of Afghanistan. Open-File Report 2002-110. US Geological Survey doi:10.3133/ofr02110
 
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