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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Millerite from
Britannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK


06956110017369360069576.jpg
Millerite

Britannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK
06956110017369360069576.jpg
Millerite

Britannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK
05365830017369360079550.jpg
Millerite

Britannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK
Locality type:Colliery
Classification
Species:Millerite
Formula:NiS
Comments:Tips now removed and landscaped.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Galena2
Calcite1
Cerussite1
Siderite1
Data
Mineral Data:Click here to view Millerite data
Locality Data:Click here to view Britannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:68384
Long-form Identifier:1:3:68384:9
GUID (UUID V4):0
Nearest other occurrences of Millerite
1.9km (1.2 miles) ⓘCambrian Colliery, Clydach Vale, Rhondda Cynon Taf, Wales, UK
3.8km (2.3 miles) ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
4.2km (2.6 miles) ⓘWestern Colliery, Nant-y-moel, Bridgend, Wales, UK
4.2km (2.6 miles) ⓘPenllwyngwent Colliery, Wyndham, Bridgend, Wales, UK
4.4km (2.7 miles) ⓘWyndham Colliery, Nant-y-moel, Bridgend, Wales, UK
5.6km (3.5 miles) ⓘDare Colliery, Cwmparc, Rhondda Cynon Taf, Wales, UK
5.9km (3.6 miles) ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK
6.1km (3.8 miles) ⓘHafod Pit (Colliery), Trehafod, Rhondda Cynon Taf, Wales, UK
6.2km (3.9 miles) ⓘCoed-Ely Colliery, Coed Ely, Rhondda Cynon Taf, Wales, UK
6.4km (4.0 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK
References
Ian Jones collection
 
and/or  
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