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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Pyrolusite from
Friedrichssegen Mine, Friedrichssegen, Lahnstein, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany


Locality type:Mine
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Friedrichssegen Mine, Friedrichssegen, Lahnstein, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:557916
Long-form Identifier:1:3:557916:7
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
18.2km (11.3 miles) ⓘSchöne Aussicht Mine, Dernbach, Wirges, Westerwaldkreis, Rhineland-Palatinate, Germany
25.5km (15.8 miles) ⓘZollhaus mine, Mudershausen, Aar-Einrich, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
27.6km (17.1 miles) ⓘSchäfer quarry, Hahnstätten, Aar-Einrich, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
28.7km (17.9 miles) ⓘRothenberg Mine (Seitersfeld), Oberneisen, Aar-Einrich, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
31.4km (19.5 miles) ⓘGeorg Mine, Willroth, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
33.3km (20.7 miles) ⓘRoßbach Mine (Rossbach Mine), Puderbach, Puderbach, Neuwied, Rhineland-Palatinate, Germany
34.0km (21.1 miles) ⓘReichensteinerberg Mine, Puderbach, Puderbach, Neuwied, Rhineland-Palatinate, Germany
35.7km (22.2 miles) ⓘLouise Mine, Bürdenbach, Altenkirchen-Flammersfeld, Altenkirchen, Rhineland-Palatinate, Germany
36.4km (22.6 miles) ⓘLimestone quarries, Steeden, Runkel, Limburg-Weilburg, Giessen Region, Hesse, Germany
37.3km (23.2 miles) ⓘEiskeller Mine, Welkenbach, Selters (Westerwald), Westerwaldkreis, Rhineland-Palatinate, Germany
References
Der Aufschluss Vol.55, March/April 2004
 
and/or  
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