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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Posnjakite from
Silver smelter slag locality, Bergstadt Altenau, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany


Locality type:Slag Locality
Classification
Species:Posnjakite
Formula:Cu4(SO4)(OH)6 · H2O
Formation:Post-mining/Anthropogenic
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Posnjakite data
Locality Data:Click here to view Silver smelter slag locality, Bergstadt Altenau, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:783303
Long-form Identifier:1:3:783303:8
GUID (UUID V4):0
Nearest other occurrences of Posnjakite
3.3km (2.1 miles) ⓘGlücksrad Mine, Oberschulenberg, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
12.1km (7.5 miles) ⓘLautenthal smelter slag locality, Lautenthal, Langelsheim, Goslar District, Lower Saxony, Germany
15.2km (9.4 miles) ⓘLudwig-Rudolf Mine, Braunlage, Goslar District, Lower Saxony, Germany
20.0km (12.4 miles) ⓘDas Aufgeklärte Glück Mine (Aufgeklärtes Glück Mine), Hasserode, Wernigerode, Harz, Saxony-Anhalt, Germany
20.8km (12.9 miles) ⓘLouise Charlotte Mine, Dränge valley, Hasserode, Wernigerode, Harz, Saxony-Anhalt, Germany
52.8km (32.8 miles) ⓘPfaffenberg Mine, Neudorf, Harzgerode, Harz, Saxony-Anhalt, Germany
76.2km (47.4 miles) ⓘGottesbelohnung smelter, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
References
Schnorrer-Köhler, G. (1991): Mineralogische Notizen V. Der Aufschluss, 42, 155-171.
 
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