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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Tetrahedrite Subgroup from
Idria Mine, Bensberg, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany


Locality type:Mine
Classification
Species:'Tetrahedrite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)Sb4S12S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tetrahedrite Subgroup data
Locality Data:Click here to view Idria Mine, Bensberg, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:104221
Long-form Identifier:1:3:104221:4
GUID (UUID V4):0
Nearest other occurrences of Tetrahedrite Subgroup
3.6km (2.2 miles) ⓘBerzelius Mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
4.0km (2.5 miles) ⓘApfel Mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
4.7km (2.9 miles) ⓘColumbus mine, Apfel mine, Moitzfeld, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
5.5km (3.4 miles) ⓘLüderich Mine, Altenbrück, Steinenbrück, Overath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
13.1km (8.2 miles) ⓘCastor Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
17.5km (10.9 miles) ⓘSilberkaule Mine, Heckhaus, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
19.6km (12.2 miles) ⓘMadonna Mine, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
45.4km (28.2 miles) ⓘSilberwiese mine, Oberlahr, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
47.6km (29.6 miles) ⓘLouise Mine, Bürdenbach, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
47.7km (29.6 miles) ⓘPetersbach Mine, Eichelhardt, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
 
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