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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Siderite from
Gelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK


Locality type:Colliery
Classification
Species:Siderite
Formula:FeCO3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Dolomite1
Chalcopyrite1
Data
Mineral Data:Click here to view Siderite data
Locality Data:Click here to view Gelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:67938
Long-form Identifier:1:3:67938:7
GUID (UUID V4):0
Nearest other occurrences of Siderite
2.4km (1.5 miles) ⓘCambrian Colliery, Clydach Vale, Rhondda Cynon Taf, Wales, UK
3.4km (2.1 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK
3.5km (2.2 miles) ⓘDare Colliery, Cwmparc, Rhondda Cynon Taf, Wales, UK
3.8km (2.3 miles) ⓘBritannic Merthyr Colliery, Gilfach Coch, Rhondda Cynon Taf, Wales, UK
4.2km (2.6 miles) ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK
4.9km (3.1 miles) ⓘWestern Colliery, Nant-y-moel, Bridgend, Wales, UK
5.1km (3.2 miles) ⓘFforchaman Colliery, Cwmaman, Rhondda Cynon Taf, Wales, UK
5.5km (3.4 miles) ⓘWyndham Colliery, Nant-y-moel, Bridgend, Wales, UK
6.0km (3.7 miles) ⓘPenllwyngwent Colliery, Wyndham, Bridgend, Wales, UK
6.2km (3.8 miles) ⓘHafod Pit (Colliery), Trehafod, Rhondda Cynon Taf, Wales, UK
References
 
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