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
New Roskear Shaft, Dolcoath Mine, Camborne, Cornwall, England, UK


Locality type:Shaft
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 New Roskear Shaft, Dolcoath Mine, Camborne, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:566255
Long-form Identifier:1:3:566255:5
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
0.8km (0.5 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
0.9km (0.5 miles) ⓘNew Cook's Kitchen Mine, Pool, Carn Brea, Cornwall, England, UK
1.3km (0.8 miles) ⓘTincroft Mine, Pool, Carn Brea, Cornwall, England, UK
1.8km (1.1 miles) ⓘGreat Condurrow Mine, Beacon, Camborne, Cornwall, England, UK
2.2km (1.4 miles) ⓘKing Edward Mine, South Condurrow Mine, Grenville United Mines, Troon, Camborne, Cornwall, England, UK
2.3km (1.4 miles) ⓘWest Condurrow Mine, Killivose, Camborne, Cornwall, England, UK
2.5km (1.5 miles) ⓘWest Wheal Frances, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK
2.5km (1.6 miles) ⓘWheal Bounty, Tryphena Mine, Beacon, Camborne, Cornwall, England, UK
2.5km (1.6 miles) ⓘSouth Condurrow Mine (Marshall's Shaft), Grenville United Mines, Troon, Camborne, Cornwall, England, UK
2.6km (1.6 miles) ⓘWheal Grenville, Grenville United Mines, Troon, Camborne, 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.282-284
 
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