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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Sapphire from
Tunk Creek, Okanogan County, Washington, USA


Locality type:Creek
Classification
Species:Corundum var: Sapphire
Formula:Al2O3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sapphire data
Locality Data:Click here to view Tunk Creek, Okanogan County, Washington, USA
Data Identifiers
Mindat Occurrence Record ID:96067
Long-form Identifier:1:3:96067:8
GUID (UUID V4):0
References
Cannon, Bart (1975) Minerals of Washington. Cordilleran. 184 pp.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
and/or  
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