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
Windsor Colliery, Abertridwr, Caerphilly, Wales, UK


Locality type:Colliery
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Windsor Colliery, Abertridwr, Caerphilly, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:68148
Long-form Identifier:1:3:68148:9
GUID (UUID V4):0
Nearest other occurrences of Calcite
6.0km (3.8 miles) ⓘBlaengwynlais Quarry, Tongwynlais, Cardiff, Wales, UK
7.1km (4.4 miles) ⓘGarth Mine (Little Garth Mine), Pentyrch, Cardiff, Wales, UK
7.2km (4.5 miles) ⓘCastell Coch Quarry, Tongwynlais, Cardiff, Wales, UK
7.5km (4.7 miles) ⓘTon Mawr Quarry, Pentyrch, Cardiff, Wales, UK
7.6km (4.7 miles) ⓘTaff's Well Quarry, Pentyrch, Cardiff, Wales, UK
8.3km (5.2 miles) ⓘCregiau Quarry, Pentyrch, Cardiff, Wales, UK
9.2km (5.7 miles) ⓘMaen Llwyd, Caerphilly, Wales, UK
9.3km (5.8 miles) ⓘRhiwsaeson (Gwern Efa), Llantrisant, Rhondda Cynon Taf, Wales, UK
10.3km (6.4 miles) ⓘA4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
10.9km (6.8 miles) ⓘMachen quarry, Machen, Caerphilly, Wales, UK
References
Ian Jones collection. Aragonite confirmed by XRD at the National Museum of Wales
 
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