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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Amethyst from
South Wheal Frances, South Frances United Mines, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK


Locality type:Mine
Classification
Species:Quartz var: Amethyst
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Amethyst data
Locality Data:Click here to view South Wheal Frances, South Frances United Mines, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:46799
Long-form Identifier:1:3:46799:5
GUID (UUID V4):0
Nearest other occurrences of Amethyst
2.0km (1.2 miles) ⓘWheal Uny, Redruth, Cornwall, England, UK
2.2km (1.4 miles) ⓘWheal Buller, Wheal Buller and Beauchamp, Redruth, Cornwall, England, UK
2.3km (1.4 miles) ⓘDolcoath Mine, Camborne, Cornwall, England, UK
2.3km (1.5 miles) ⓘEast Pool Mine, Pool, Carn Brea, Cornwall, England, UK
3.5km (2.1 miles) ⓘPednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UK
4.0km (2.5 miles) ⓘWheal Grambler (East Wheal Sparnon), St Day, Cornwall, England, UK
4.2km (2.6 miles) ⓘCathedral Mine, Busveal, St Day, Cornwall, England, UK
6.6km (4.1 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
6.9km (4.3 miles) ⓘGarlidna Mine, Garlidna United Mines, Porkellis, Wendron, Cornwall, England, UK
7.1km (4.4 miles) ⓘAle and Cakes Mine, United Mines (Gwennap United Mines), Clifford Amalgamated Mines, Gwennap, Cornwall, England, UK
References
Rory Donaldson collection
 
and/or  
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