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
Graigwen Mine (Nant-Goch Mine), Barmouth, Gwynedd, 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 Graigwen Mine (Nant-Goch Mine), Barmouth, Gwynedd, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:478147
Long-form Identifier:1:3:478147:9
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
0.9km (0.6 miles) ⓘVigra Mine, Llanelltyd, Gwynedd, Wales, UK
2.1km (1.3 miles) ⓘBryn Castell Mine, Llanelltyd, Gwynedd, Wales, UK
2.1km (1.3 miles) ⓘClogau St Davids Mine (Clogau Mine; St David's Mine), Llanelltyd, Gwynedd, Wales, UK
3.4km (2.1 miles) ⓘGarthgell Mine, Llanelltyd, Gwynedd, Wales, UK
3.6km (2.2 miles) ⓘPanorama Mine (Belle View Mine), Barmouth, Gwynedd, Wales, UK
5.0km (3.1 miles) ⓘDripping Well, Barmouth, Gwynedd, Wales, UK
5.2km (3.2 miles) ⓘMoel Ispri, Llanelltyd, Gwynedd, Wales, UK
7.8km (4.9 miles) ⓘCefn Coch Mine (incl. Berthlwyd Mine; New California Mine), Ganllwyd, Gwynedd, Wales, UK
7.9km (4.9 miles) ⓘCae Mawr Mine, Ganllwyd, Gwynedd, Wales, UK
9.2km (5.7 miles) ⓘGlasdir Mine, Brithdir and Llanfachreth, Gwynedd, Wales, UK
References
Goldmining in Western Merioneth, T. A. Morrison (undated)
 
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