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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Beusite from
Genna zinc smelter slag locality, Helmke quarry nature reserve, Letmathe, Iserlohn, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany


Locality type:Slag Locality
Classification
Species:Beusite
Formula:Mn2+Mn22+ (PO4)2
Formation:Post-mining/Anthropogenic
Comments:As reddish brown indistinct crystals forming crusts in or filling pore walls in iron-rich slag. Rarely monoclinic transparent to translucent crystals with glassy lustre up to 3mm associated with vivianite, switzerite, and other phosphates.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Beusite data
Locality Data:Click here to view Genna zinc smelter slag locality, Helmke quarry nature reserve, Letmathe, Iserlohn, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:1016207
Long-form Identifier:1:3:1016207:1
GUID (UUID V4):0
References
Bender, D.; Krimmelbein, W. (1994) Aktuelle Übersicht: Mineralien der Zinkhütte Genna/Sauerland [Current overview: Minerals from the Genna/Sauerland zinc smelter]. Mineralien Welt, 5 (4). 10
Blaß, Günter; Graf, Hans-Werner (1994) Neufunde von bekannten Fundorten (X) [New discoveries from known sites (X)]. Mineralien-Welt, 5 (2). 43-47
 
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