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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Siegenite from
International Colliery, Blaengarw, Bridgend, Wales, UK


Locality type:Colliery
Classification
Species:Siegenite
Formula:CoNi2S4
Comments:Tips now removed and landscaped.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Siegenite data
Locality Data:Click here to view International Colliery, Blaengarw, Bridgend, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:68278
Long-form Identifier:1:3:68278:9
GUID (UUID V4):0
Nearest other occurrences of Siegenite
4.0km (2.5 miles) ⓘWestern Colliery, Nant-y-moel, Bridgend, Wales, UK
5.0km (3.1 miles) ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK
8.3km (5.1 miles) ⓘRhondda Valley, Rhondda Cynon Taf, Wales, UK
8.6km (5.3 miles) ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
10.1km (6.3 miles) ⓘPark Slip West (Margam Opencast), Cefn Cribwr, Bridgend, Wales, UK
11.8km (7.3 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK
13.8km (8.6 miles) ⓘCoed-Ely Colliery, Coed Ely, Rhondda Cynon Taf, Wales, UK
14.7km (9.1 miles) ⓘLlanilid West Opencast Coalmine, Llanharan, Rhondda Cynon Taf, Wales, UK
19.2km (12.0 miles) ⓘNant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK
20.6km (12.8 miles) ⓘDeep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK
References
Ian Jones collection
 
and/or  
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