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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Chalcedony from
East Pool Mine, Pool, Carn Brea, Cornwall, England, UK


Locality type:Mine
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view East Pool Mine, Pool, Carn Brea, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:548072
Long-form Identifier:1:3:548072:2
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
0.7km (0.4 miles) ⓘNorth Pool Mine, Pool, Carn Brea, Cornwall, England, UK
0.8km (0.5 miles) ⓘCarn Brea Mine, Pool, Carn Brea, Cornwall, England, UK
1.0km (0.6 miles) ⓘSouth Crofty Mine, Pool, Carn Brea, Cornwall, England, UK
1.7km (1.1 miles) ⓘNorth Roskear, Camborne, Cornwall, England, UK
2.8km (1.7 miles) ⓘWheal Sparnon, Redruth, Cornwall, England, UK
2.9km (1.8 miles) ⓘSouth Wheal Basset, Carnkie, Carn Brea, Cornwall, England, UK
3.0km (1.9 miles) ⓘPednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UK
5.3km (3.3 miles) ⓘTresavean Mine, Lanner, Lanner, Cornwall, England, UK
6.4km (4.0 miles) ⓘCarharrack Mine, Gwennap, Cornwall, England, UK
7.1km (4.4 miles) ⓘTrevascus Mine (Trevaskus Mine; Trevaskis Mine), Carnhell Green, Gwinear-Gwithian, 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.
 
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