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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Valentinite from
Great Republic Mine, Miller River Mining District, King County, Washington, USA


Locality type:Mine
Classification
Species:Valentinite
Formula:Sb2O3
Confirmation
Validity:Confirmed
Confirmation Methods:Dealer/Collection Label
Data
Mineral Data:Click here to view Valentinite data
Locality Data:Click here to view Great Republic Mine, Miller River Mining District, King County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:773934
Long-form Identifier:1:3:773934:7
GUID (UUID V4):0
References
Tom Loomis
 
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