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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Gypsum from
Heimberg quarry, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany


Locality type:Quarry
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Heimberg quarry, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:31164
Long-form Identifier:1:3:31164:1
GUID (UUID V4):0
Nearest other occurrences of Gypsum
5.4km (3.3 miles) ⓘLautenthal smelter slag locality, Lautenthal, Langelsheim, Goslar District, Lower Saxony, Germany
5.9km (3.7 miles) ⓘLautenthalsglück mine, Lautenthal, Langelsheim, Goslar District, Lower Saxony, Germany
6.4km (4.0 miles) ⓘGroßfürstin Alexandra Mine, Goslar, Goslar District, Lower Saxony, Germany
6.5km (4.0 miles) ⓘRammelsberg Mine, Rammelsberg, Goslar, Goslar District, Lower Saxony, Germany
7.8km (4.8 miles) ⓘKahlenberg district, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
9.5km (5.9 miles) ⓘGlückauf Mine, Hütschen valley, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
9.9km (6.2 miles) ⓘGlücksrad Mine, Oberschulenberg, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
11.0km (6.8 miles) ⓘSt Lorenz Mine, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
13.8km (8.6 miles) ⓘGrund mine, Bergstadt Bad Grund, Bad Grund, Göttingen District, Lower Saxony, Germany
13.9km (8.6 miles) ⓘHuneberg Quarry, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
References
Schnorrer-Köhler, G. (1991): Mineralogische Notizen V. Der Aufschluss, 42, 155-171.
 
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