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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Bournonite from
Cwmsymlog Mine (East Daren Mine; Gwaithddu Mine), Goginan, Trefeirig, Ceredigion, Wales, UK


Locality type:Mine
Classification
Species:Bournonite
Formula:PbCuSbS3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bournonite data
Locality Data:Click here to view Cwmsymlog Mine (East Daren Mine; Gwaithddu Mine), Goginan, Trefeirig, Ceredigion, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:18523
Long-form Identifier:1:3:18523:1
GUID (UUID V4):0
Nearest other occurrences of Bournonite
0.8km (0.5 miles) ⓘCwmerfin Mine, Cwmerfyn, Trefeirig, Ceredigion, Wales, UK
1.3km (0.8 miles) ⓘBwlch Mine (Bwlch Consols Mine; Bwlch United Mine; Bwlch Cwmerfin Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
1.3km (0.8 miles) ⓘCeunant Mine, Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
1.9km (1.2 miles) ⓘLlechwedd Helyg Mine (Willow Bank Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
1.9km (1.2 miles) ⓘGoginan Mine, Goginan, Melindwr, Ceredigion, Wales, UK
2.1km (1.3 miles) ⓘDaren Mine (Old Daren Mine; Darren Consolidated Mine; Daren United Mine; Great Darren Mine; Darren Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
2.4km (1.5 miles) ⓘNantyrarian Mine (Silver Stream Mine. Blaendyffryn Mine), Goginan, Melindwr, Ceredigion, Wales, UK
3.8km (2.4 miles) ⓘBronfloyd Mine, Bow Street, Trefeirig, Ceredigion, Wales, UK
5.2km (3.2 miles) ⓘLeri Valley Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
7.3km (4.5 miles) ⓘAlltycrib Mine (Talybont Mine; Middleton Mine; North Cardigan Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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