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
Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK


09870230017364234827663.jpg
Amethyst

Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK
03366700017272052799121.jpg
Quartz, etc.

Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK
09870230017364234827663.jpg
Amethyst

Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK
03366700017272052799121.jpg
Quartz, etc.

Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK
09870230017364234827663.jpg
Amethyst

Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK
03366700017272052799121.jpg
Quartz, etc.

Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK
Locality type:Quarry
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Baryte2
Calcite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Taff's Well Quarry, Pentyrch, Cardiff, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:18705
Long-form Identifier:1:3:18705:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
0.7km (0.4 miles) ⓘTon Mawr Quarry, Pentyrch, Cardiff, Wales, UK
3.4km (2.1 miles) ⓘCregiau Quarry, Pentyrch, Cardiff, Wales, UK
5.9km (3.7 miles) ⓘLlwyn-saer Mine, Llantrisant, Rhondda Cynon Taf, Wales, UK
6.2km (3.8 miles) ⓘMwyndy Mine, Llantrisant, Rhondda Cynon Taf, Wales, UK
7.6km (4.7 miles) ⓘWindsor Colliery, Abertridwr, Caerphilly, Wales, UK
9.4km (5.8 miles) ⓘBedwas Colliery, Bedwas, Caerphilly, Wales, UK
11.0km (6.8 miles) ⓘRhyd-y-Gwern Mine, Draethen, Caerphilly, Wales, UK
11.3km (7.0 miles) ⓘCoed-Ely Colliery, Coed Ely, Rhondda Cynon Taf, Wales, UK
12.3km (7.7 miles) ⓘRisca Colliery (Blackvein Colliery), Risca, Caerphilly, Wales, UK
12.5km (7.8 miles) ⓘHafod Pit (Colliery), Trehafod, Rhondda Cynon Taf, Wales, UK
References
Betts, John (n.d.) John Betts website listing.
 
and/or  
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