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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Tennantite Subgroup from
Needle's Eye Mine, Needle's Eye, Dumfries and Galloway, Scotland, UK


Locality type:Mine
Classification
Species:'Tennantite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)As4S12S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tennantite Subgroup data
Locality Data:Click here to view Needle's Eye Mine, Needle's Eye, Dumfries and Galloway, Scotland, UK
Data Identifiers
Mindat Occurrence Record ID:19057
Long-form Identifier:1:3:19057:0
GUID (UUID V4):0
Nearest other occurrences of Tennantite Subgroup
8.9km (5.6 miles) ⓘDalbeattie, Dumfries and Galloway, Scotland, UK
46.1km (28.6 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
46.6km (28.9 miles) ⓘOld Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
47.8km (29.7 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
50.9km (31.7 miles) ⓘDale Head Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
61.7km (38.4 miles) ⓘEagle Crag Mine, Patterdale, Eden, Cumbria, England, UK
66.2km (41.1 miles) ⓘPave York Mine, Greenburn Valley, Coniston, South Lakeland, Cumbria, England, UK
66.6km (41.4 miles) ⓘBirk Fell Mine, Coniston, South Lakeland, Cumbria, England, UK
66.7km (41.4 miles) ⓘHolehouse Gill Mine, Ulpha, Copeland, Cumbria, England, UK
68.2km (42.4 miles) ⓘPaddy End Mine, Coniston, South Lakeland, Cumbria, England, UK
References
R. S. W. Braithwaite and J. R. Knight (1990) Rare Minerals, Including Several New to Britain, in Supergene Alteration of U-Cu-As-Bi-Co Mineralisation Near Dalbeattie, South Scotland. Mineralogical Magazine 54:129-131.
Day, Harry (1999) BMS Database, British Micromount Society.
 
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