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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Pyrrhotite from
Simdde Dylluan Mine (Talysarn Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK


Locality type:Mine
Classification
Species:Pyrrhotite
Formula:Fe1-xS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrrhotite data
Locality Data:Click here to view Simdde Dylluan Mine (Talysarn Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:18690
Long-form Identifier:1:3:18690:2
GUID (UUID V4):0
Nearest other occurrences of Pyrrhotite
0.3km (0.2 miles) ⓘDrws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK
8.9km (5.5 miles) ⓘLliwedd Mine, Beddgelert, Gwynedd, Wales, UK
15.4km (9.6 miles) ⓘCwmorthin Quarry, Tanygrisiau, Ffestiniog, Gwynedd, Wales, UK
24.8km (15.4 miles) ⓘPrince Edward Mine (Moel Croesau), Trawsfynydd, Gwynedd, Wales, UK
26.3km (16.3 miles) ⓘCae Coch Mine, Trefriw, Conwy, Wales, UK
31.6km (19.6 miles) ⓘGwynfynydd Mine, Ganllwyd, Gwynedd, Wales, UK
35.6km (22.1 miles) ⓘClogau St Davids Mine (Clogau Mine; St David's Mine), Llanelltyd, Gwynedd, Wales, UK
35.7km (22.2 miles) ⓘTrial level, Vigra Mine, Llanelltyd, Gwynedd, Wales, UK
36.1km (22.4 miles) ⓘVigra Mine, Llanelltyd, Gwynedd, Wales, UK
36.2km (22.5 miles) ⓘGraigwen Mine (Nant-Goch Mine), Barmouth, Gwynedd, Wales, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
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