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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Calcite from
Prince Edward Mine (Moel Croesau), Trawsfynydd, Gwynedd, Wales, UK


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Prince Edward Mine (Moel Croesau), Trawsfynydd, Gwynedd, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:64289
Long-form Identifier:1:3:64289:7
GUID (UUID V4):0
Nearest other occurrences of Calcite
7.3km (4.6 miles) ⓘManod Quarry (Manod New Setts Quarry), Ffestiniog, Gwynedd, Wales, UK
8.7km (5.4 miles) ⓘArenig Station Quarry, Llanycil, Gwynedd, Wales, UK
10.2km (6.3 miles) ⓘGwynfynydd Mine, Ganllwyd, Gwynedd, Wales, UK
11.9km (7.4 miles) ⓘBwlch y Plym Mine, Llanfrothen, Gwynedd, Wales, UK
12.6km (7.8 miles) ⓘPantywrach Mine, Llanfrothen, Gwynedd, Wales, UK
13.5km (8.4 miles) ⓘDolfrwnog Mine (incl. Turf Copper Mine), Ganllwyd, Gwynedd, Wales, UK
16.4km (10.2 miles) ⓘTwll Maen Grisial, Fron Olau, Prenteg, Dolbenmaen, Gwynedd, Wales, UK
18.2km (11.3 miles) ⓘHafod y Llan workings, Beddgelert, Gwynedd, Wales, UK
18.4km (11.4 miles) ⓘLliwedd Mine, Beddgelert, Gwynedd, Wales, UK
19.7km (12.3 miles) ⓘClogau St Davids Mine (Clogau Mine; St David's Mine), Llanelltyd, Gwynedd, Wales, UK
References
Mason, J. S., Williamson, K. W. (2001) Filiform Pyrite from the Prince Edward Mine, Dolgellau Gold-Belt, Gwynedd. UK Journal of Mines and Minerals 21, 37-38
 
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