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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Pitchblende from
Roskrow United Mine, Perranarworthal, Cornwall, England, UK


Locality type:Mine
Classification
Species:Uraninite var: Pitchblende
Formula:UO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pitchblende data
Locality Data:Click here to view Roskrow United Mine, Perranarworthal, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:548342
Long-form Identifier:1:3:548342:6
GUID (UUID V4):0
Nearest other occurrences of Pitchblende
4.2km (2.6 miles) ⓘWheal Moyle, Gwennap, Cornwall, England, UK
4.7km (2.9 miles) ⓘTing Tang Mine, Carharrack, Cornwall, England, UK
5.5km (3.4 miles) ⓘWest Wheal Jewel (Tolcarne Mine; North Wheal Damsel), St Day, Cornwall, England, UK
5.8km (3.6 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
6.0km (3.7 miles) ⓘWheal Gorland, St Day, Cornwall, England, UK
6.4km (4.0 miles) ⓘWheal Buller, Wheal Buller and Beauchamp, Redruth, Cornwall, England, UK
7.3km (4.5 miles) ⓘPednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UK
7.3km (4.6 miles) ⓘWheal Basset, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK
9.0km (5.6 miles) ⓘCarn Brea Mine, Pool, Carn Brea, Cornwall, England, UK
9.7km (6.0 miles) ⓘTincroft Mine, Pool, Carn Brea, Cornwall, England, UK
References
Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.
Hill, J. B., MacAlister, D. A. (1906) The Geology of Falmouth and Truro and of the Mining District of Camborne and Redruth - Memoirs of the Geological Survey. Geological Survey of Great Britain.
 
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