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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Quartz from
Windsor Colliery, Abertridwr, Caerphilly, Wales, UK


Locality type:Colliery
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Millerite1
Galena1
Siderite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Windsor Colliery, Abertridwr, Caerphilly, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:68147
Long-form Identifier:1:3:68147:0
GUID (UUID V4):0
Nearest other occurrences of Quartz
6.0km (3.7 miles) ⓘBedwas Colliery, Bedwas, Caerphilly, 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) ⓘHafod Pit (Colliery), Trehafod, Rhondda Cynon Taf, Wales, UK
8.3km (5.2 miles) ⓘCregiau Quarry, Pentyrch, Cardiff, Wales, UK
9.7km (6.0 miles) ⓘRisca Colliery (Blackvein Colliery), Risca, Caerphilly, Wales, UK
9.7km (6.0 miles) ⓘLlwyn-saer Mine, Llantrisant, Rhondda Cynon Taf, Wales, UK
9.9km (6.1 miles) ⓘMwyndy Mine, Llantrisant, Rhondda Cynon Taf, Wales, UK
10.2km (6.3 miles) ⓘRhyd-y-Gwern Mine, Draethen, Caerphilly, 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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