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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Chalcocite from
South Wheal Towan, Porthtowan, St Agnes, Cornwall, England, UK


Locality type:Mine
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view South Wheal Towan, Porthtowan, St Agnes, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:3422
Long-form Identifier:1:3:3422:7
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
0.9km (0.5 miles) ⓘLushington Cove, Porthtowan, St Agnes, Cornwall, England, UK
0.9km (0.6 miles) ⓘWheal Music, Porthtowan, St Agnes, Cornwall, England, UK
3.6km (2.2 miles) ⓘWheal Devonshire, St Agnes, Cornwall, England, UK
4.1km (2.6 miles) ⓘWheal Whitfield (North Carn Brea Mine; North Tincroft Mine), Robarts Mine (incl. East Wheal Seton; Wheal Maude), Illogan, Cornwall, England, UK
5.4km (3.3 miles) ⓘWheal Unity Wood (Tolgullow United Mine; West Poldice Mine), Chacewater, Cornwall, England, UK
5.7km (3.6 miles) ⓘWheal Gorland, St Day, Cornwall, England, UK
5.8km (3.6 miles) ⓘWheal Muttrall, Wheal Gorland, St Day, Cornwall, England, UK
6.0km (3.7 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
6.3km (3.9 miles) ⓘEast Pool Mine, Pool, Carn Brea, Cornwall, England, UK
6.4km (3.9 miles) ⓘCathedral Mine, Busveal, St Day, Cornwall, England, UK
References
Embrey, Peter G., Symes, Robert F. (1987) Minerals of Cornwall and Devon. British Museum (Natural History) and the Mineralogical Record, Inc., London and Tucson, AZ.
 
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