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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Hörnesite from
Johann Mine, Burgfelsen, Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany


Locality type:Mine
Classification
Species:Hörnesite
Formula:Mg3(AsO4)2 · 8H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hörnesite data
Locality Data:Click here to view Johann Mine, Burgfelsen, Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany
Data Identifiers
Mindat Occurrence Record ID:6289
Long-form Identifier:1:3:6289:3
GUID (UUID V4):0
Nearest other occurrences of Hörnesite
2.3km (1.4 miles) ⓘAnton Mine, Heubach Valley, Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany
7.6km (4.7 miles) ⓘHilfe Gottes Mine, Stammelbach valley, Schiltach, Rottweil, Freiburg Region, Baden-Württemberg, Germany
10.6km (6.6 miles) ⓘClara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
67.1km (41.7 miles) ⓘTannenboden mine, Aitern, Lörrach, Freiburg Region, Baden-Württemberg, Germany
88.9km (55.2 miles) ⓘKobalt shaft, Chrétien vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
88.9km (55.3 miles) ⓘChrétien Inférieur mine, Chrétien vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
89.4km (55.6 miles) ⓘGabe Gottes Mine, Saint Jacques vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
89.5km (55.6 miles) ⓘChrétien vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
89.7km (55.8 miles) ⓘGiftgrube mine, Saint Jacques vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
References
American Mineralogist: 76: 2021.
 
and/or  
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