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
Diergardt-Mevissen Mine, Rheinhausen, Duisburg, Düsseldorf, North Rhine-Westphalia, Germany


Locality type:Mine
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 Diergardt-Mevissen Mine, Rheinhausen, Duisburg, Düsseldorf, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:930473
Long-form Identifier:1:3:930473:4
GUID (UUID V4):0
Nearest other occurrences of Quartz
10.0km (6.2 miles) ⓘAlstaden coal mine, Alstaden, Oberhausen, Düsseldorf, North Rhine-Westphalia, Germany
10.5km (6.5 miles) ⓘFriedrich-Heinrich coal mine, Kamp-Lintfort, Wesel, Düsseldorf, North Rhine-Westphalia, Germany
12.9km (8.0 miles) ⓘGeorg mine, Lintorf, Ratingen, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
13.0km (8.1 miles) ⓘNeu-Diepenbrock Mine, Saarn, Mülheim an der Ruhr, Düsseldorf, North Rhine-Westphalia, Germany
19.2km (11.9 miles) ⓘChristian Levin coal mine, Dellwig, Essen, Düsseldorf, North Rhine-Westphalia, Germany
20.4km (12.7 miles) ⓘVogelsangbach valley, Heiligenhaus, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
21.8km (13.5 miles) ⓘProsper coal mine, Bottrop, Münster, North Rhine-Westphalia, Germany
22.2km (13.8 miles) ⓘA44 Highway cut, Heiligenhaus, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
24.4km (15.2 miles) ⓘBenthausen Mine, Metzkausen, Mettmann, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
25.1km (15.6 miles) ⓘPörtingssiepen Mine, Fischlaken, Essen, Düsseldorf, North Rhine-Westphalia, Germany
References
Volker Reppke Collection
 
and/or  
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