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
East Pool Mine, Pool, 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 East Pool Mine, Pool, Carn Brea, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:548070
Long-form Identifier:1:3:548070:8
GUID (UUID V4):0
Nearest other occurrences of Amethyst
1.7km (1.0 miles) ⓘDolcoath Mine, Camborne, Cornwall, England, UK
2.3km (1.4 miles) ⓘWheal Uny, Redruth, Cornwall, England, UK
3.0km (1.9 miles) ⓘPednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UK
3.3km (2.1 miles) ⓘWheal Buller, Wheal Buller and Beauchamp, Redruth, Cornwall, England, UK
3.9km (2.4 miles) ⓘWheal Grambler (East Wheal Sparnon), St Day, Cornwall, England, UK
4.5km (2.8 miles) ⓘCathedral Mine, Busveal, St Day, Cornwall, England, UK
6.5km (4.0 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
7.6km (4.7 miles) ⓘAle and Cakes Mine, United Mines (Gwennap United Mines), Clifford Amalgamated Mines, Gwennap, Cornwall, England, UK
9.2km (5.7 miles) ⓘGarlidna Mine, Garlidna United Mines, Porkellis, Wendron, Cornwall, England, UK
9.9km (6.2 miles) ⓘWheal Jane, Kea, Cornwall, England, UK
References
Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.
 
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