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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Quartz from
Trewollack Mine, St Columb Minor, Newquay, Cornwall, England, UK


Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Trewollack Mine, St Columb Minor, Newquay, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:670253
Long-form Identifier:1:3:670253:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
4.6km (2.9 miles) ⓘWheal Trugo, Trebudannon, St Columb Major, Cornwall, England, UK
6.1km (3.8 miles) ⓘPencorse Consols, St Newlyn East, Cornwall, England, UK
6.4km (4.0 miles) ⓘEast Wheal Rose, St Newlyn East, Cornwall, England, UK
6.7km (4.1 miles) ⓘPenhale Moor Mine (Penhale and Barton Mine), Fraddon, St Enoder, Cornwall, England, UK
6.8km (4.2 miles) ⓘParka Mine (Park of Mines), Trevarran United Mines, Indian Queens, St Enoder, Cornwall, England, UK
7.2km (4.5 miles) ⓘDeerpark Mine (Deer Park Mine), Perran Iron Lode (Great Perran Iron Lode), St Newlyn East, Cornwall, England, UK
7.3km (4.6 miles) ⓘCargoll Mine (incl. New Cargoll Mine), St Newlyn East, Cornwall, England, UK
7.4km (4.6 miles) ⓘFatwork and Virtue Mine (Indian Queens Tin Mine; Wheal Cornwall), Trevarran United Mines, Indian Queens, St Enoder, Cornwall, England, UK
7.7km (4.8 miles) ⓘWheal Mexico (Trebellan Mine; incl. Treworthy Mine), Perranzabuloe, Cornwall, England, UK
7.8km (4.9 miles) ⓘDuchy Peru Mine, Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, 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.
 
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