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
Pednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UK


07966160017271997289814.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
09512490017271997406885.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
04420280017271997425822.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
08730520017271997295255.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
05695870017366358167094.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
07191120017366358169835.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
09609230017366358164524.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
02977030017363153818575.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
07966160017271997289814.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
09512490017271997406885.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
04420280017271997425822.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
08730520017271997295255.jpg
Chalcedony

Pednandrea Mine, Redruth, Cornwall, England, UK
Locality type:Mine
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Cassiterite3
Tourmaline3
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Pednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:985012
Long-form Identifier:1:3:985012:5
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.4km (0.3 miles) ⓘWheal Sparnon, Redruth, Cornwall, England, UK
0.9km (0.5 miles) ⓘBuckett's Mine, Redruth, Cornwall, England, UK
0.9km (0.6 miles) ⓘWheal Grambler (East Wheal Sparnon), St Day, Cornwall, England, UK
1.5km (0.9 miles) ⓘWheal Uny, Redruth, Cornwall, England, UK
1.6km (1.0 miles) ⓘCathedral Mine, Busveal, St Day, Cornwall, England, UK
1.7km (1.0 miles) ⓘCardrew Consols (Cardrew Downs Mine), Cardrew and Prussia United Mine, Redruth, Cornwall, England, UK
1.7km (1.1 miles) ⓘNew Tolgus Shaft, Tarewaste, Redruth, Cornwall, England, UK
1.9km (1.2 miles) ⓘWheal Prussia, Cardrew and Prussia United Mine, Redruth, Cornwall, England, UK
1.9km (1.2 miles) ⓘWheal Tolgus, Tolgus Mount, Redruth, Cornwall, England, UK
1.9km (1.2 miles) ⓘSouth Carn Brea Mine, Carnkie, Carn Brea, Cornwall, England, UK
References
Phillips, William (1823) An Elementary Introduction to Mineralogy (3rd ed.)
Hogg, Thomas (1825) A Manual of Mineralogy - In which is shown how much Cornwall contributes to the illustration of the science. W. Polybank High Cross, Truro.
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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