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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Berzelianite from
El Dragón mine, Porco Municipality, Antonio Quijarro Province, Potosí, Bolivia


Locality type:Mine
Classification
Species:Berzelianite
Formula:Cu2-xSe (x ≈ 0.12)
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Berzelianite data
Locality Data:Click here to view El Dragón mine, Porco Municipality, Antonio Quijarro Province, Potosí, Bolivia
Data Identifiers
Mindat Occurrence Record ID:1895
Long-form Identifier:1:3:1895:1
GUID (UUID V4):0
References
Schnorrer-Köhler, Günther, Grundmann, Günter, Lehrberger, Gerhard (1990) The El Dragón Mine, Potosí, Bolivia. The Mineralogical Record, 21 (2) 133-146pp.137-137
Simon, Grigore, Kesler, Stephen E., Essene, Eric J. (1997) Phase relations among selenides, tellurides, and oxides; II, Applications to selenide-bearing ore deposits. Economic Geology, 92 (4) 468-484 doi:10.2113/gsecongeo.92.4.468
 
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