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
Drws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Llanllyfni, 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 Drws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:44525
Long-form Identifier:1:3:44525:8
GUID (UUID V4):0
Nearest other occurrences of Calcite
5.9km (3.6 miles) ⓘOgof Owain Glyndwr, Moel Hebog, Beddgelert, Gwynedd, Wales, UK
7.2km (4.5 miles) ⓘBritannia Mine, Beddgelert, Gwynedd, Wales, UK
7.9km (4.9 miles) ⓘHafod y Llan workings, Beddgelert, Gwynedd, Wales, UK
8.6km (5.3 miles) ⓘDinorwic Quarry, Llanddeiniolen, Gwynedd, Wales, UK
8.7km (5.4 miles) ⓘLliwedd Mine, Beddgelert, Gwynedd, Wales, UK
12.9km (8.0 miles) ⓘTwll Maen Grisial, Fron Olau, Prenteg, Dolbenmaen, Gwynedd, Wales, UK
14.5km (9.0 miles) ⓘBwlch y Plym Mine, Llanfrothen, Gwynedd, Wales, UK
15.2km (9.4 miles) ⓘPantywrach Mine, Llanfrothen, Gwynedd, Wales, UK
18.3km (11.4 miles) ⓘManod Quarry (Manod New Setts Quarry), Ffestiniog, Gwynedd, Wales, UK
24.8km (15.4 miles) ⓘPrince Edward Mine (Moel Croesau), Trawsfynydd, Gwynedd, Wales, UK
References
Braithwaite, Richard S.W. (1982) Wroewolfeite in Britain. The Mineralogical Record, 13 (3) 167-174pp.167-167
 
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