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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Tennantite Subgroup from
Tresavean Mine, Lanner, Lanner, Cornwall, England, UK


Locality type:Mine
Classification
Species:'Tennantite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)As4S12S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tennantite Subgroup data
Locality Data:Click here to view Tresavean Mine, Lanner, Lanner, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:139768
Long-form Identifier:1:3:139768:0
GUID (UUID V4):0
Nearest other occurrences of Tennantite Subgroup
2.6km (1.6 miles) ⓘSouth Wheal Basset, Carnkie, Carn Brea, Cornwall, England, UK
2.8km (1.7 miles) ⓘWest Wheal Jewel (Tolcarne Mine; North Wheal Damsel), St Day, Cornwall, England, UK
3.1km (1.9 miles) ⓘWheal Jewel, Gwennap, Cornwall, England, UK
3.1km (1.9 miles) ⓘCarharrack Mine, Gwennap, Cornwall, England, UK
3.6km (2.2 miles) ⓘWheal Virgin, Great Consolidated Mines, Clifford Amalgamated Mines, Gwennap, Cornwall, England, UK
3.6km (2.3 miles) ⓘWheal Gorland, St Day, Cornwall, England, UK
3.6km (2.3 miles) ⓘUnited Mines (Gwennap United Mines), Clifford Amalgamated Mines, Gwennap, Cornwall, England, UK
3.9km (2.4 miles) ⓘBasset Mines, Carnkie, Carn Brea, Cornwall, England, UK
3.9km (2.4 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
4.1km (2.5 miles) ⓘWheal Druid, Carn Brea Mine, Pool, Carn Brea, Cornwall, England, UK
References
Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford.
Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.
Hill, J. B., MacAlister, D. A. (1906) The Geology of Falmouth and Truro and of the Mining District of Camborne and Redruth - Memoirs of the Geological Survey. Geological Survey of Great Britain.
 
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