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
Rhondda Valley, Rhondda Cynon Taf, Wales, UK


Locality type:Valley
Classification
Species:Siegenite
Formula:CoNi2S4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Siegenite data
Locality Data:Click here to view Rhondda Valley, Rhondda Cynon Taf, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:17650
Long-form Identifier:1:3:17650:7
GUID (UUID V4):0
Nearest other occurrences of Siegenite
0.4km (0.2 miles) ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
3.6km (2.2 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK
3.9km (2.4 miles) ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK
4.7km (2.9 miles) ⓘWestern Colliery, Nant-y-moel, Bridgend, Wales, UK
8.3km (5.1 miles) ⓘInternational Colliery, Blaengarw, Bridgend, Wales, UK
9.4km (5.8 miles) ⓘCoed-Ely Colliery, Coed Ely, Rhondda Cynon Taf, Wales, UK
12.3km (7.6 miles) ⓘDeep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK
13.0km (8.1 miles) ⓘLlanilid West Opencast Coalmine, Llanharan, Rhondda Cynon Taf, Wales, UK
13.6km (8.5 miles) ⓘUniversal Colliery, Senghenydd, Caerphilly, Wales, UK
14.6km (9.1 miles) ⓘWindsor Colliery, Abertridwr, Caerphilly, Wales, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
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