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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Dolomite from
Big Pit (Colliery), Blaenavon, Torfaen, Wales, UK


Locality type:Colliery
Classification
Species:Dolomite
Formula:CaMg(CO3)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Dolomite data
Locality Data:Click here to view Big Pit (Colliery), Blaenavon, Torfaen, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:82052
Long-form Identifier:1:3:82052:9
GUID (UUID V4):0
Nearest other occurrences of Dolomite
12.2km (7.6 miles) ⓘBargoed Colliery, Bargoed, Caerphilly, Wales, UK
17.8km (11.1 miles) ⓘDeep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK
19.7km (12.2 miles) ⓘMachen quarry, Machen, Caerphilly, Wales, UK
20.1km (12.5 miles) ⓘVaynor Quarry, Trefechan, Merthyr Tydfil, Wales, UK
20.1km (12.5 miles) ⓘBedwas Colliery, Bedwas, Caerphilly, Wales, UK
21.2km (13.2 miles) ⓘAbercynon Colliery (Dowlais Cardiff), Abercynon, Rhondda Cynon Taf, Wales, UK
22.3km (13.9 miles) ⓘMaen Llwyd, Caerphilly, Wales, UK
25.8km (16.0 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK
29.1km (18.1 miles) ⓘTaff's Well Quarry, Pentyrch, Cardiff, Wales, UK
29.1km (18.1 miles) ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
References
Ian Jones or national Museum of Wales collections
 
and/or  
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