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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Electrum from
General Custer Mine (Lucky Boy Mine), Yankee Fork Mining District, Custer County, Idaho, USA


Locality type:Mine
Classification
Species:Native Gold var: Electrum
Formula:(Au,Ag)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Electrum data
Locality Data:Click here to view General Custer Mine (Lucky Boy Mine), Yankee Fork Mining District, Custer County, Idaho, USA
Data Identifiers
Mindat Occurrence Record ID:601547
Long-form Identifier:1:3:601547:3
GUID (UUID V4):0
References
Econ Geol (1985) 80:1277-1296
 
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