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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Gypsum from
Goginan Mine, Goginan, Melindwr, Ceredigion, Wales, UK


Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Goginan Mine, Goginan, Melindwr, Ceredigion, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:18341
Long-form Identifier:1:3:18341:9
GUID (UUID V4):0
Nearest other occurrences of Gypsum
5.5km (3.4 miles) ⓘCwmrheidol Mine, Ystumtuen, Cwmrheidol, Ceredigion, Wales, UK
8.3km (5.2 miles) ⓘFrongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
9.9km (6.2 miles) ⓘGwaithgoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
12.1km (7.5 miles) ⓘLodge Park Trial, Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK
21.0km (13.0 miles) ⓘDylife Mine (Pen Dylife Mine; Esgairgaled Mine; Llechwedd Ddu Mine; Blaen Twymyn Mine), Dylife, Machynlleth, Powys, Wales, UK
35.1km (21.8 miles) ⓘBrynycastell Mine, Dolgellau, Gwynedd, Wales, UK
37.5km (23.3 miles) ⓘTrial level, Vigra Mine, Llanelltyd, Gwynedd, Wales, UK
41.9km (26.0 miles) ⓘOgofau Mine (Roman Deep Mine; Dolaucothi Mine; Cothy Mine), Pumpsaint, Carmarthenshire, Wales, UK
51.3km (31.9 miles) ⓘCastell Carn Dochan, Llanuwchllyn, Gwynedd, Wales, UK
60.0km (37.3 miles) ⓘDolyhir Quarry, Old Radnor, Powys, Wales, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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