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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Hollandite from
Neufürstenberg castle, Hammereisenbach-Bregenbach, Vöhrenbach, Schwarzwald-Baar-Kreis, Freiburg Region, Baden-Württemberg, Germany


Classification
Species:Hollandite
Formula:Ba(Mn64+Mn23+)O16
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hollandite data
Locality Data:Click here to view Neufürstenberg castle, Hammereisenbach-Bregenbach, Vöhrenbach, Schwarzwald-Baar-Kreis, Freiburg Region, Baden-Württemberg, Germany
Data Identifiers
Mindat Occurrence Record ID:168564
Long-form Identifier:1:3:168564:0
GUID (UUID V4):0
Nearest other occurrences of Hollandite
6.3km (3.9 miles) ⓘRappenloch Mine, Eisenbach, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
37.4km (23.2 miles) ⓘBurgfelsen, Wittichen, Schenkenzell, Rottweil, Freiburg Region, Baden-Württemberg, Germany
43.0km (26.7 miles) ⓘClara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
77.0km (47.9 miles) ⓘBlienschwiller - Dambach-la-Ville area, Dambach-la-Ville, Sélestat-Erstein, Bas-Rhin, Grand Est, France
92.2km (57.3 miles) ⓘLangenbrand, Schömberg, Calw, Karlsruhe Region, Baden-Württemberg, Germany
References
Walenta, Kurt (1992) Die Mineralien des Schwarzwaldes und ihre Fundstellen. Christian Weise Verlag. 336 pp.
 
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