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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Pyrite from
Princess Marina Mine (Bedd-y-Coedwr Mine; Beddcoedwr Mine), Ganllwyd, Gwynedd, Wales, UK


Locality type:Mine
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrite data
Locality Data:Click here to view Princess Marina Mine (Bedd-y-Coedwr Mine; Beddcoedwr Mine), Ganllwyd, Gwynedd, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:186252
Long-form Identifier:1:3:186252:2
GUID (UUID V4):0
Nearest other occurrences of Pyrite
0.2km (0.1 miles) ⓘCwmheisian East Mine, Ganllwyd, Gwynedd, Wales, UK
0.4km (0.3 miles) ⓘGwynfynydd Mine, Ganllwyd, Gwynedd, Wales, UK
1.7km (1.1 miles) ⓘTyddyn Gwladys Mine, Ganllwyd, Gwynedd, Wales, UK
2.0km (1.2 miles) ⓘCoed-y-Brenin deposit, Ganllwyd, Gwynedd, Wales, UK
3.4km (2.1 miles) ⓘDolfrwnog Mine (incl. Turf Copper Mine), Ganllwyd, Gwynedd, Wales, UK
4.0km (2.5 miles) ⓘFfridd-goch Mine, Brithdir and Llanfachreth, Gwynedd, Wales, UK
6.1km (3.8 miles) ⓘGlasdir Mine, Brithdir and Llanfachreth, Gwynedd, Wales, UK
6.7km (4.2 miles) ⓘCaegwernog Mine, Llanelltyd, Gwynedd, Wales, UK
10.1km (6.3 miles) ⓘPrince Edward Mine (Moel Croesau), Trawsfynydd, Gwynedd, Wales, UK
10.2km (6.3 miles) ⓘGarthgell Mine, Llanelltyd, Gwynedd, Wales, UK
References
P.M. Allen, A.A. Jackson: "Geological Excursions in the Harlech Dome", BGS, 1985
 
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