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
Risca Colliery (Blackvein Colliery), Risca, Caerphilly, Wales, UK


06325540017364873131226.jpg
Quartz, etc.

Risca Colliery, Risca, Caerphilly, Wales, UK
06325540017364873131226.jpg
Quartz, etc.

Risca Colliery, Risca, Caerphilly, Wales, UK
04294950017272031252410.jpg
Quartz, etc.

Risca Colliery, Risca, Caerphilly, Wales, UK
Locality type:Colliery
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Siderite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Risca Colliery (Blackvein Colliery), Risca, Caerphilly, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:69811
Long-form Identifier:1:3:69811:5
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.6km (1.0 miles) ⓘMachen quarry, Machen, Caerphilly, Wales, UK
2.7km (1.7 miles) ⓘRisca Quarry, Risca, Caerphilly, Wales, UK
2.7km (1.7 miles) ⓘRhyd-y-Gwern Mine, Draethen, Caerphilly, Wales, UK
3.7km (2.3 miles) ⓘBedwas Colliery, Bedwas, Caerphilly, Wales, UK
9.0km (5.6 miles) ⓘOakdale Colliery, Oakdale, Caerphilly, Wales, UK
9.7km (6.0 miles) ⓘWindsor Colliery, Abertridwr, Caerphilly, Wales, UK
12.3km (7.7 miles) ⓘTaff's Well Quarry, Pentyrch, Cardiff, Wales, UK
12.4km (7.7 miles) ⓘBlaenserchan Colliery, Abersychan, Torfaen, Wales, UK
12.6km (7.8 miles) ⓘMarkham Colliery, Markham, Caerphilly, Wales, UK
12.8km (7.9 miles) ⓘTon Mawr Quarry, Pentyrch, Cardiff, Wales, UK
References
 
and/or  
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