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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Tetrahedrite Subgroup from
Tyddyn Gwladys Mine, Ganllwyd, Gwynedd, Wales, UK


Locality type:Mine
Classification
Species:'Tetrahedrite Subgroup' (not an IMA approved species)
Formula:Cu6(Cu4C22+)Sb4S12S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tetrahedrite Subgroup data
Locality Data:Click here to view Tyddyn Gwladys Mine, Ganllwyd, Gwynedd, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:475627
Long-form Identifier:1:3:475627:9
GUID (UUID V4):0
Nearest other occurrences of Tetrahedrite Subgroup
1.1km (0.7 miles) ⓘCoed-y-Brenin deposit, Ganllwyd, Gwynedd, Wales, UK
7.3km (4.6 miles) ⓘMoel Ispri, Llanelltyd, Gwynedd, Wales, UK
9.2km (5.7 miles) ⓘClogau St Davids Mine (Clogau Mine; St David's Mine), Llanelltyd, Gwynedd, Wales, UK
42.1km (26.2 miles) ⓘLletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion, Wales, UK
43.2km (26.9 miles) ⓘCwmsymlog Mine (East Daren Mine; Gwaithddu Mine), Goginan, Trefeirig, Ceredigion, Wales, UK
43.8km (27.2 miles) ⓘCwmdaren Mine (Cwm Darren Mine; Lefel Gopor Mine; Copper Level Mine; Twll y Mwyn Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
44.1km (27.4 miles) ⓘCwmerfin Mine, Cwmerfyn, Trefeirig, Ceredigion, Wales, UK
44.1km (27.4 miles) ⓘDaren Mine (Old Daren Mine; Darren Consolidated Mine; Daren United Mine; Great Darren Mine; Darren Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
44.4km (27.6 miles) ⓘBwlchrhennaid Mine (Level Newydd Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
45.0km (28.0 miles) ⓘGoginan Mine, Goginan, Melindwr, Ceredigion, Wales, UK
References
National Museum of Wales database
 
and/or  
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