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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Fluoro-tremolite from
Dannemora Mine, Dannemora, Östhammar, Uppsala County, Sweden


Locality type:Deposit
Classification
Species:Fluoro-tremolite
Formula:◻Ca2Mg5(Si8O22)F2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Fluoro-tremolite data
Locality Data:Click here to view Dannemora Mine, Dannemora, Östhammar, Uppsala County, Sweden
Data Identifiers
Mindat Occurrence Record ID:962018
Long-form Identifier:1:3:962018:6
GUID (UUID V4):0
References
Åberg, Franz (2015) Mineralogical Study of Manganese Bearing Skarn Minerals and Manganese Content in Magnetite in the Dannemora Skarn Iron Ore Deposit. Degree Project, Department of Earth Sciences, Uppsala University. 118 pp.
 
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