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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Quartz from
Prinz Wilhelm II Mine (Wilhelm II Mine), Velbert, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Pyromorphite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Prinz Wilhelm II Mine (Wilhelm II Mine), Velbert, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:180701
Long-form Identifier:1:3:180701:1
GUID (UUID V4):0
References
Schnorrer-Köhler, Günther (1988) Der Niederbergische Erzbezirk des Werdener Bergreviers in Nordrhein-Westfalen [The Niederbergische Erzbezirk of the Werden mining area in North Rhine-Westphalia]. Lapis, 13 (1) 11-35
 
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