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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Kröhnkite from
Toncrae Mine (Toncrae-Howard Mine; Toncray Mine), Southern Lead, Southern Section-Blue Ridge Province, Floyd County, Virginia, USA


Locality type:Mine
Classification
Species:Kröhnkite
Formula:Na2Cu(SO4)2 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Kröhnkite data
Locality Data:Click here to view Toncrae Mine (Toncrae-Howard Mine; Toncray Mine), Southern Lead, Southern Section-Blue Ridge Province, Floyd County, Virginia, USA
Data Identifiers
Mindat Occurrence Record ID:368459
Long-form Identifier:1:3:368459:7
GUID (UUID V4):0
References
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey.
 
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