Piast Mine, Nowa Ruda, Kłodzko District, Lower Silesia (Dolnośląskie), Poland

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Dormant coal-mine within Lower Silesian Coal Basin. Clay shales, gabbros, argilites and bauxites.
Cr-bearing, pinkish alumohydrocalcite was firstly mentioned as cobaltiferous pharmacolite or erythrite.

References:
- Traube H. 1888: Die Minerale Schlesiens. Breslau.
- Hoehne K. 1953: Ein neues Vorkommen von chromhaltigen Alumohydrocalcit im niederschlesischen Bergbaugebiet. Neues Jb. Miner. Monatsh. H. 1.
- Morawiecki A. 1961: β-alumohydrokalcyt z Nowej Rudy na Dolnym Śląsku. Prz. Geol. nr 7.

Map Reference: 50°34'48"N , 16°30'24"E

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Mineral List:

Alumohydrocalcite
Alunite
Ankerite
Calcite
Chalcopyrite

Dickite
Dolomite
Galena
Kaolinite
Marcasite

Millerite
Prehnite
Pyrite

13 entries listed. 13 valid minerals.

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