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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Chalcanthite from
Grund mine, Bergstadt Bad Grund, Bad Grund, Göttingen District, Lower Saxony, Germany


Locality type:Mine
Classification
Species:Chalcanthite
Formula:CuSO4 · 5H2O
Comments:Associated with light beige earthy jarosite pustules directly on corroded chalcopyrite.
Habit:curved "ram's horn"-like aggregates up to 2mm
Colour:sky blue, transparent
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcanthite data
Locality Data:Click here to view Grund mine, Bergstadt Bad Grund, Bad Grund, Göttingen District, Lower Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:30601
Long-form Identifier:1:3:30601:0
GUID (UUID V4):0
Nearest other occurrences of Chalcanthite
12.4km (7.7 miles) ⓘGlücksrad Mine, Oberschulenberg, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
13.2km (8.2 miles) ⓘSilberbach slag locality, Oberschulenberg, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
15.8km (9.8 miles) ⓘWeißer Hirsch Mine, Goslar, Goslar District, Lower Saxony, Germany
16.5km (10.2 miles) ⓘRammelsberg Mine, Rammelsberg, Goslar, Goslar District, Lower Saxony, Germany
16.7km (10.4 miles) ⓘCommunion Quarry, Rammelsberg, Goslar, Goslar District, Lower Saxony, Germany
21.1km (13.1 miles) ⓘFrische Lutter vein (incl. Lutter adit; South Rothäuser adit; North Rothäuser adit), Bad Lauterberg, Göttingen District, Lower Saxony, Germany
60.5km (37.6 miles) ⓘBrachmannsberg Mine, Harzgerode, Harzgerode, Harz, Saxony-Anhalt, Germany
References
Schnorrer-Köhler, G. (1988) Mineralogische Notizen IV. Der Aufschluss: 39: 153-168 (in German).
 
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