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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Ankerite from
Giepenbach Mine (Gertrud Mine), Tanne, Oberharz am Brocken, Harz, Saxony-Anhalt, Germany


Locality type:Mine
Classification
Species:Ankerite
Formula:Ca(Fe2+,Mg)(CO3)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ankerite data
Locality Data:Click here to view Giepenbach Mine (Gertrud Mine), Tanne, Oberharz am Brocken, Harz, Saxony-Anhalt, Germany
Data Identifiers
Mindat Occurrence Record ID:877644
Long-form Identifier:1:3:877644:0
GUID (UUID V4):0
Nearest other occurrences of Ankerite
10.1km (6.3 miles) ⓘEinheit Mine, Elbingerode, Oberharz am Brocken, Harz, Saxony-Anhalt, Germany
10.3km (6.4 miles) ⓘManganese deposit, Ilfeld, Harztor, Nordhausen District, Thuringia, Germany
11.9km (7.4 miles) ⓘLudwig-Rudolf Mine, Braunlage, Goslar District, Lower Saxony, Germany
16.0km (9.9 miles) ⓘAllzunah Castle, Herrmannsacker, Harztor, Nordhausen District, Thuringia, Germany
19.3km (12.0 miles) ⓘWolkenhügel Mine, Harz (Landkreis Göttingen), Göttingen District, Lower Saxony, Germany
21.6km (13.4 miles) ⓘBrachmannsberg Mine, Harzgerode, Harzgerode, Harz, Saxony-Anhalt, Germany
21.8km (13.5 miles) ⓘFrische Lutter vein (incl. Lutter adit; South Rothäuser adit; North Rothäuser adit), Bad Lauterberg, Göttingen District, Lower Saxony, Germany
23.3km (14.5 miles) ⓘFloßberg Mine, Harz (Landkreis Göttingen), Göttingen District, Lower Saxony, Germany
24.5km (15.2 miles) ⓘGlücksstern Mine, Neudorf, Harzgerode, Harz, Saxony-Anhalt, Germany
25.1km (15.6 miles) ⓘHuneberg Quarry, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
References
Gröbner, J.; Hajek, W.; Junker, R.; Nikoleizig, J. (2011) Neue Mineralschätze des Harzes. Papierflieger Verlag. 127 pp.
 
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