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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Chalcopyrite from
Deep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK


Locality type:Colliery
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Deep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:70374
Long-form Identifier:1:3:70374:5
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
3.6km (2.2 miles) ⓘAbercynon Colliery (Dowlais Cardiff), Abercynon, Rhondda Cynon Taf, Wales, UK
6.4km (4.0 miles) ⓘUniversal Colliery, Senghenydd, Caerphilly, Wales, UK
7.9km (4.9 miles) ⓘMarkham Colliery, Markham, Caerphilly, Wales, UK
8.2km (5.1 miles) ⓘLlanbradach Colliery, Llanbradach, Caerphilly, Wales, UK
8.8km (5.5 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK
9.8km (6.1 miles) ⓘBedwellty Pits, Tredegar, Blaenau Gwent, Wales, UK
11.0km (6.8 miles) ⓘMarine Colliery, Cwm, Blaenau Gwent, Wales, UK
12.0km (7.5 miles) ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
15.1km (9.4 miles) ⓘMachen quarry, Machen, Caerphilly, Wales, UK
15.5km (9.6 miles) ⓘTaff's Well Quarry, Pentyrch, Cardiff, Wales, UK
References
Ian Jones collection
 
and/or  
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