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
Oakdale Colliery, Oakdale, Caerphilly, Wales, UK


04336090017370832635263.jpg
Quartz, etc.

Oakdale Colliery, Oakdale, Caerphilly, Wales, UK
04336090017370832635263.jpg
Quartz, etc.

Oakdale Colliery, Oakdale, Caerphilly, Wales, UK
03131740017272036746831.jpg
Quartz, etc.

Oakdale Colliery, Oakdale, 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 Oakdale Colliery, Oakdale, Caerphilly, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:68342
Long-form Identifier:1:3:68342:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
4.0km (2.5 miles) ⓘMarkham Colliery, Markham, Caerphilly, Wales, UK
5.3km (3.3 miles) ⓘMarine Colliery, Cwm, Blaenau Gwent, Wales, UK
6.5km (4.1 miles) ⓘBlaenserchan Colliery, Abersychan, Torfaen, Wales, UK
7.8km (4.8 miles) ⓘBedwellty Pits, Tredegar, Blaenau Gwent, Wales, UK
8.6km (5.3 miles) ⓘRisca Quarry, Risca, Caerphilly, Wales, UK
9.0km (5.6 miles) ⓘRisca Colliery (Blackvein Colliery), Risca, Caerphilly, Wales, UK
9.4km (5.9 miles) ⓘBedwas Colliery, Bedwas, Caerphilly, Wales, UK
10.3km (6.4 miles) ⓘMachen quarry, Machen, Caerphilly, Wales, UK
11.7km (7.2 miles) ⓘRhyd-y-Gwern Mine, Draethen, Caerphilly, Wales, UK
11.9km (7.4 miles) ⓘWindsor Colliery, Abertridwr, Caerphilly, Wales, UK
References
Ian Jones collection
 
and/or  
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