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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Chalcopyrite from
Dyfngwm mine, Penegoes, Powys, Wales, UK


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Dyfngwm mine, Penegoes, Powys, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:15428
Long-form Identifier:1:3:15428:6
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
0.4km (0.2 miles) ⓘCastle Rock Mine, Penegoes, Powys, Wales, UK
0.5km (0.3 miles) ⓘPenycrocben, Penegoes, Powys, Wales, UK
0.8km (0.5 miles) ⓘAfon Clyywedog Gorge, Penegoes, Powys, Wales, UK
1.3km (0.8 miles) ⓘDylife Mine (Pen Dylife Mine; Esgairgaled Mine; Llechwedd Ddu Mine; Blaen Twymyn Mine), Dylife, Machynlleth, Powys, Wales, UK
6.3km (3.9 miles) ⓘNant yr Eira mine (Snowbrook mine), Hafren Forest, Powys, Wales, UK
7.2km (4.4 miles) ⓘHyddgen Mine, Carn Hyddgen, Uwch y Garreg, Powys, Wales, UK
8.1km (5.0 miles) ⓘGeufron Mine, Llanidloes, Powys, Wales, UK
9.2km (5.7 miles) ⓘSiglenlas Mine, Llangurig, Powys, Wales, UK
11.2km (6.9 miles) ⓘCamdwrbach Mine (Cambrian South Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
11.9km (7.4 miles) ⓘBryn-yr-Afr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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