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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Prehnite from
Kuhlenberg quarry, Silbach, Winterberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany


Locality type:Quarry
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Kuhlenberg quarry, Silbach, Winterberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:90403
Long-form Identifier:1:3:90403:4
GUID (UUID V4):0
Nearest other occurrences of Prehnite
6.5km (4.0 miles) ⓘClemensberg quarry, Hildfeld, Winterberg, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
13.9km (8.7 miles) ⓘCronenberg quarry, Remblinghausen, Meschede, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
44.0km (27.3 miles) ⓘObereisenhausen diabase quarry, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
45.2km (28.1 miles) ⓘDimmberg quarry, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
45.3km (28.1 miles) ⓘBurgberg Quarry (Trautvetter Quarry), Steinperf, Steffenberg, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
50.9km (31.6 miles) ⓘDiabase quarry, Hartenrod, Bad Endbach, Marburg-Biedenkopf, Giessen Region, Hesse, Germany
58.3km (36.2 miles) ⓘDiabase quarries, Herborn, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany
66.7km (41.4 miles) ⓘHirschkopf quarry, Blasbach, Wetzlar, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany
74.8km (46.5 miles) ⓘDiabase quarry, Stockhausen, Leun, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
Jahn, Steffen; Hadasch, Harry (2002) Eine kleine "Weltfundstelle" im Sauerland: Der Steinbruch am Kuhlenberg bei Silbach [A small "world discovery site" in the Sauerland: The quarry at Kuhlenberg near Silbach]. Mineralien-Welt, 13 (3). 16-29
 
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