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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Muscovite from
Fairy Stone State Park, Patrick County, Virginia, USA


04367740017483947836491.jpg
Sericite, etc.

Fairy Stone State Park, Patrick County, Virginia, USA
04367740017483947836491.jpg
Sericite, etc.

Fairy Stone State Park, Patrick County, Virginia, USA
01280240017483947845229.jpg
Sericite, etc.

Fairy Stone State Park, Patrick County, Virginia, USA
Locality type:State Park
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Comments:Pseudomorphs after staurolite
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Fairy Stone State Park, Patrick County, Virginia, USA
Data Identifiers
Mindat Occurrence Record ID:993450
Long-form Identifier:1:3:993450:4
GUID (UUID V4):0
References
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey.
 
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