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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Cryptomelane from
Manganese deposit, Ilfeld, Harztor, Nordhausen District, Thuringia, Germany


Locality type:Deposit
Classification
Species:Cryptomelane
Formula:K(Mn74+Mn3+)O16
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Cryptomelane data
Locality Data:Click here to view Manganese deposit, Ilfeld, Harztor, Nordhausen District, Thuringia, Germany
Data Identifiers
Mindat Occurrence Record ID:96864
Long-form Identifier:1:3:96864:3
GUID (UUID V4):0
Nearest other occurrences of Cryptomelane
19.9km (12.3 miles) ⓘEinheit Mine, Elbingerode, Oberharz am Brocken, Harz, Saxony-Anhalt, Germany
36.1km (22.4 miles) ⓘGlücksrad Mine, Oberschulenberg, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
48.2km (30.0 miles) ⓘFriederike Mine, Lautenthal, Langelsheim, Goslar District, Lower Saxony, Germany
89.2km (55.4 miles) ⓘAtterode, Bad Liebenstein, Wartburg District, Thuringia, Germany
92.0km (57.2 miles) ⓘKochenfeld Mine, Trusetal, Brotterode-Trusetal, Schmalkalden-Meiningen District, Thuringia, Germany
92.8km (57.7 miles) ⓘMommel Mine, Trusetal, Brotterode-Trusetal, Schmalkalden-Meiningen District, Thuringia, Germany
References
Wittern, Artur (2001) Mineralfundorte und ihre Minerale in Deutschland (1st ed.) Schweizerbart, Stuttgart.
 
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