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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Tourmaline from
West Wheal Frances, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK


Locality type:Mine
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view West Wheal Frances, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:624201
Long-form Identifier:1:3:624201:5
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
0.8km (0.5 miles) ⓘWheal Grenville, Grenville United Mines, Troon, Camborne, Cornwall, England, UK
0.8km (0.5 miles) ⓘKing Edward Mine, South Condurrow Mine, Grenville United Mines, Troon, Camborne, Cornwall, England, UK
1.1km (0.7 miles) ⓘGreat Condurrow Mine, Beacon, Camborne, Cornwall, England, UK
1.3km (0.8 miles) ⓘSouth Condurrow Mine (Marshall's Shaft), Grenville United Mines, Troon, Camborne, Cornwall, England, UK
1.6km (1.0 miles) ⓘTincroft Mine, Pool, Carn Brea, Cornwall, England, UK
1.7km (1.0 miles) ⓘSouth Tolcarne Mine, Beacon, Camborne, Cornwall, England, UK
1.9km (1.2 miles) ⓘNew Cook's Kitchen Mine, Pool, Carn Brea, Cornwall, England, UK
2.0km (1.3 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
2.0km (1.3 miles) ⓘWest Basset Stamps (Wheal Haste), Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK
2.1km (1.3 miles) ⓘWheal Basset, Basset Mines, Carnkie, Carn Brea, 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.341-351
 
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