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
South Wendron Mine (South Wheal Lovell; Lovell Consols), Trewennack, Wendron, 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 South Wendron Mine (South Wheal Lovell; Lovell Consols), Trewennack, Wendron, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:690366
Long-form Identifier:1:3:690366:4
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
2.8km (1.7 miles) ⓘGarlidna Mine, Garlidna United Mines, Porkellis, Wendron, Cornwall, England, UK
3.2km (2.0 miles) ⓘBassett & Grylls Mine (Porkellis Mine; Porkellis Tin Mines; Wheal Jantar; Balwath Mine), Porkellis, Wendron, Cornwall, England, UK
3.8km (2.3 miles) ⓘWheal Enys (Wheal Vernon), Porkellis, Wendron, Cornwall, England, UK
4.0km (2.5 miles) ⓘBoswin Mine, Porkellis, Wendron, Cornwall, England, UK
4.1km (2.5 miles) ⓘBalcoath, Porkellis, Wendron, Cornwall, England, UK
4.9km (3.1 miles) ⓘHalvosso Quarry (Halvasso Quarry; Kessel Downs Quarry), Mabe, Cornwall, England, UK
5.0km (3.1 miles) ⓘHigher Spargo quarry, Mabe, Cornwall, England, UK
5.8km (3.6 miles) ⓘTrolvis Quarry, Longdowns, Stithians, Cornwall, England, UK
6.5km (4.0 miles) ⓘPolcrebo Downs Mine, Nancegollan, Crowan, Cornwall, England, UK
8.0km (4.9 miles) ⓘGreat Wheal Fortune, Breage, Cornwall, England, UK
References
Dominy, S.C., Camm, G.S., and Bussell, M.A. (1996): Proceedings of the Ussher Society 9, 97-104.
 
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