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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Ranciéite from
Wolkenhügel Mine, Harz (Landkreis Göttingen), Göttingen District, Lower Saxony, Germany


Locality type:Mine
Classification
Species:Ranciéite
Formula:(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Ranciéite data
Locality Data:Click here to view Wolkenhügel Mine, Harz (Landkreis Göttingen), Göttingen District, Lower Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:668182
Long-form Identifier:1:3:668182:1
GUID (UUID V4):0
Nearest other occurrences of Ranciéite
19.3km (12.0 miles) ⓘGiepenbach Mine (Gertrud Mine), Tanne, Oberharz am Brocken, Harz, Saxony-Anhalt, Germany
20.4km (12.7 miles) ⓘKahlenberg district, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
21.0km (13.0 miles) ⓘManganese deposit, Ilfeld, Harztor, Nordhausen District, Thuringia, Germany
23.4km (14.6 miles) ⓘSt Georg Mine (Goslar'sche Gleie), Hasserode, Wernigerode, Harz, Saxony-Anhalt, Germany
23.8km (14.8 miles) ⓘWinterberg Quarry, Iberg, Bergstadt Bad Grund, Bad Grund, Göttingen District, Lower Saxony, Germany
29.7km (18.4 miles) ⓘFriederike Mine, Lautenthal, Langelsheim, Goslar District, Lower Saxony, Germany
33.1km (20.6 miles) ⓘIberg reservoir, Nordhausen, Nordhausen District, Thuringia, Germany
65.4km (40.6 miles) ⓘBlaue Kuppe, Eschwege, Werra-Meißner, Kassel Region, Hesse, Germany
References
Schnorrer, Günther (1995) Mineralogische Neuheiten von bekannten deutschen Fundorten [Mineralogical novelties from well-known German deposits]. Lapis, 20 (12). 43-48; 62
Gröbner, J. & Kloss, D. (2010): Neufunde von der Grube Wolkenhügel bei Bad Lauterberg im Harz. Lapis 35 (1), 39-41; 62.
 
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