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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Sphalerite from
Dyffryn Cellwen coal workings, Onllwyn, Neath Port Talbot, Wales, UK


Locality type:Workings
Classification
Species:Sphalerite
Formula:ZnS
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Sphalerite data
Locality Data:Click here to view Dyffryn Cellwen coal workings, Onllwyn, Neath Port Talbot, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:1104239
Long-form Identifier:1:3:1104239:4
GUID (UUID V4):0
Nearest other occurrences of Sphalerite
2.4km (1.5 miles) ⓘNant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK
9.3km (5.8 miles) ⓘGlyn Gwilym Isaf Opencast, Clyne and Melincourt, Neath Port Talbot, Wales, UK
17.6km (10.9 miles) ⓘInternational Colliery, Blaengarw, Bridgend, Wales, UK
19.2km (11.9 miles) ⓘCwmneol Colliery (Morris's pit), Cwmaman, Rhondda Cynon Taf, Wales, UK
19.9km (12.3 miles) ⓘWyndham Colliery, Nant-y-moel, Bridgend, Wales, UK
20.7km (12.9 miles) ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
21.3km (13.2 miles) ⓘCambrian Colliery, Clydach Vale, Rhondda Cynon Taf, Wales, UK
21.7km (13.5 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK
23.2km (14.4 miles) ⓘBritannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK
25.1km (15.6 miles) ⓘMargam Pit, Margam Moors, Neath Port Talbot, Wales, UK
References
Render, Paul (n.d.) Paul Render Collection.
 
and/or  
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