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
Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria


07228460017363152944913.jpg
Gypsum, etc.

Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
05013690017363152948422.jpg
Gypsum

Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
02434470017272021635985.jpg
Gypsum, etc.

Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
05013690017363152948422.jpg
Gypsum

Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
02434470017272021635985.jpg
Gypsum, etc.

Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
05013690017363152948422.jpg
Gypsum

Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Pyrrhotite1
Native Bismuth1
Calcite1
Matildite1
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Arsenic mine, Lower Rotgülden lake, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:23547
Long-form Identifier:1:3:23547:5
GUID (UUID V4):0
Nearest other occurrences of Gypsum
1.9km (1.2 miles) ⓘRotgülden, Muhr, Tamsweg District, Salzburg, Austria
2.7km (1.7 miles) ⓘSilbereck - Altenbergkar area, Rotgülden, Muhr, Tamsweg District, Salzburg, Austria
4.3km (2.7 miles) ⓘStubenriegel (Herrenbau; Seekar), Lanisch, Pölla valley, Rennweg am Katschberg, Spittal an der Drau District, Carinthia, Austria
6.3km (3.9 miles) ⓘÖdenlanisch (Ebenlanisch), Pölla valley, Rennweg am Katschberg, Spittal an der Drau District, Carinthia, Austria
6.4km (4.0 miles) ⓘKölnbrein dam, Malta, Spittal an der Drau District, Carinthia, Austria
13.1km (8.1 miles) ⓘKnappenlöcher, Zanaischg, Pölla valley, Rennweg am Katschberg, Spittal an der Drau District, Carinthia, Austria
13.3km (8.3 miles) ⓘSternspitze, Zanaischg, Pölla valley, Rennweg am Katschberg, Spittal an der Drau District, Carinthia, Austria
13.6km (8.5 miles) ⓘA10 Highway tunnel (Tauern tunnel), Muhr, Tamsweg District, Salzburg, Austria
13.6km (8.5 miles) ⓘA10 Highway tunnel, Katschberg, Schellgaden, Muhr, Tamsweg District, Salzburg, Austria
14.3km (8.9 miles) ⓘEssl quarry, Sankt Michael im Lungau, Tamsweg District, Salzburg, Austria
References
Paar, Werner H.; Mrazek, R.; Heiss, H. (1993) Rotgülden: Gold-und Gustavit-Kristalle aus dem Salzburger Land [Rotgülden: Gold and gustavite crystals from the Salzburg region]. Lapis, 18 (5). 13-28; 50
Majzlan, Juraj, Plášil, Jakub, Dachs, Edgar, Benisek, Artur, Mangold, Stefan, Škoda, Radek, Abrosimova, Natalya (2021) Prediction and observation of formation of Ca–Mg arsenates in acidic and alkaline fluids: Thermodynamic properties and mineral assemblages at Jáchymov, Czech Republic and Rotgülden, Austria. Chemical Geology, 559. 119922 doi:10.1016/j.chemgeo.2020.119922
 
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