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
Wilhelmina mine, Kerkrade, Limburg, Netherlands


Locality type:Colliery
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Wilhelmina mine, Kerkrade, Limburg, Netherlands
Data Identifiers
Mindat Occurrence Record ID:948554
Long-form Identifier:1:3:948554:9
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.6km (1.0 miles) ⓘWillem-Sophia mine, Kerkrade, Limburg, Netherlands
2.9km (1.8 miles) ⓘDomaniale mine, Kerkrade, Limburg, Netherlands
3.1km (1.9 miles) ⓘLaura mine, Eygelshoven, Kerkrade, Limburg, Netherlands
5.6km (3.5 miles) ⓘOranje-Nassau-I mine, Heerlen, Limburg, Netherlands
6.7km (4.1 miles) ⓘDe Groot quarry, Landgraaf, Limburg, Netherlands
8.8km (5.5 miles) ⓘAnna mine, Alsdorf, Aachen, Cologne, North Rhine-Westphalia, Germany
8.9km (5.5 miles) ⓘHendrik mine, Brunssum, Limburg, Netherlands
9.3km (5.8 miles) ⓘEmma mine, Brunssum, Limburg, Netherlands
9.6km (5.9 miles) ⓘEmma-Hendrik coal dump, Brunssum, Limburg, Netherlands
12.2km (7.6 miles) ⓘHerrenberg Mine, Verlautenheide, Aachen, Cologne, North Rhine-Westphalia, Germany
References
Leon Hupperichs collection
 
and/or  
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