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
Iberg reservoir, Nordhausen, Nordhausen District, Thuringia, Germany


Locality type:Reservoir
Classification
Species:Ranciéite
Formula:(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ranciéite data
Locality Data:Click here to view Iberg reservoir, Nordhausen, Nordhausen District, Thuringia, Germany
Data Identifiers
Mindat Occurrence Record ID:529384
Long-form Identifier:1:3:529384:1
GUID (UUID V4):0
Nearest other occurrences of Ranciéite
12.2km (7.6 miles) ⓘManganese deposit, Ilfeld, Harztor, Nordhausen District, Thuringia, Germany
19.4km (12.1 miles) ⓘGiepenbach Mine (Gertrud Mine), Tanne, Oberharz am Brocken, Harz, Saxony-Anhalt, Germany
33.1km (20.6 miles) ⓘWolkenhügel Mine, Harz (Landkreis Göttingen), Göttingen District, Lower Saxony, Germany
34.1km (21.2 miles) ⓘSt Georg Mine (Goslar'sche Gleie), Hasserode, Wernigerode, Harz, Saxony-Anhalt, Germany
50.4km (31.3 miles) ⓘKahlenberg district, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
56.3km (35.0 miles) ⓘWinterberg Quarry, Iberg, Bergstadt Bad Grund, Bad Grund, Göttingen District, Lower Saxony, Germany
60.1km (37.3 miles) ⓘFriederike Mine, Lautenthal, Langelsheim, Goslar District, Lower Saxony, Germany
73.5km (45.7 miles) ⓘBlaue Kuppe, Eschwege, Werra-Meißner, Kassel Region, Hesse, Germany
References
Gröbner, J., Wesiger, J. (2008): Die Mineralien des Kupferschieferbergbaus an südlichen Harzrand bei Ilfeld in Thüringen. Mineralien-Welt, 19(2), 18-28.
 
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