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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Pyrite from
Bassett & Grylls Mine (Porkellis Mine; Porkellis Tin Mines; Wheal Jantar; Balwath Mine), Porkellis, Wendron, Cornwall, England, UK


Locality type:Mine
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrite data
Locality Data:Click here to view Bassett & Grylls Mine (Porkellis Mine; Porkellis Tin Mines; Wheal Jantar; Balwath Mine), Porkellis, Wendron, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:702869
Long-form Identifier:1:3:702869:4
GUID (UUID V4):0
Nearest other occurrences of Pyrite
0.6km (0.4 miles) ⓘGarlidna Mine, Garlidna United Mines, Porkellis, Wendron, Cornwall, England, UK
1.7km (1.1 miles) ⓘFatwork Mine, East Wheal Lovell (incl. Tregonebris Mine), Trewennack, Wendron, Cornwall, England, UK
1.7km (1.1 miles) ⓘWheal Roots (Poldark Mine), Trenear, Wendron, Cornwall, England, UK
1.8km (1.1 miles) ⓘBalmynheer Mine, Porkellis, Wendron, Cornwall, England, UK
3.2km (2.0 miles) ⓘSouth Wendron Mine (South Wheal Lovell; Lovell Consols), Trewennack, Wendron, Cornwall, England, UK
4.7km (2.9 miles) ⓘHalvosso Quarry (Halvasso Quarry; Kessel Downs Quarry), Mabe, Cornwall, England, UK
4.7km (2.9 miles) ⓘWheal Trannack, Trannack, Wendron, Cornwall, England, UK
5.1km (3.2 miles) ⓘWheal Prospidnick, Sithney, Cornwall, England, UK
5.2km (3.2 miles) ⓘTrolvis Quarry, Longdowns, Stithians, Cornwall, England, UK
5.2km (3.3 miles) ⓘWheal Vyvyan (incl. Wheal Fire), Constantine, Cornwall, England, UK
References
Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.pp.251-254
 
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