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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Smoky Quartz from
South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UK


Locality type:Mine
Classification
Species:Quartz var: Smoky Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Smoky Quartz data
Locality Data:Click here to view South Terras Mine (Resugga & Tolgarrick Mine; Union Mine; Uranium Mine), St Stephen-in-Brannel, Cornwall, England, UK
Data Identifiers
Mindat Occurrence Record ID:10250
Long-form Identifier:1:3:10250:2
GUID (UUID V4):0
Nearest other occurrences of Smoky Quartz
3.7km (2.3 miles) ⓘLittle Treviscoe China Clay Pit (Treviscoe China Clay Works), Treviscoe, St Stephen-in-Brannel, Cornwall, England, UK
5.2km (3.2 miles) ⓘWheal Remfry China Clay Pit, Fraddon, St Enoder, Cornwall, England, UK
8.4km (5.2 miles) ⓘGunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK
9.3km (5.8 miles) ⓘGoonbarrow China Clay Pit, Bugle, Treverbyn, Cornwall, England, UK
11.7km (7.3 miles) ⓘBodelva Pit (Carvear China Clay Works), Bodelva, St Blaise, Cornwall, England, UK
13.9km (8.7 miles) ⓘColcerrow Quarry, Lanlivery, Cornwall, England, UK
21.8km (13.6 miles) ⓘWheal Unity, Gwennap, Cornwall, England, UK
22.4km (13.9 miles) ⓘWheal Gorland, St Day, Cornwall, England, UK
24.2km (15.0 miles) ⓘCathedral Mine, Busveal, St Day, Cornwall, England, UK
24.4km (15.2 miles) ⓘLower Kergilliack Quarry, Budock, Cornwall, England, UK
References
Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp.
 
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