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


07593070017272740357768.jpg
Siegenite, etc.

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
08807020017272030413301.jpg
Siegenite

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
08459140017272030429573.jpg
Siegenite

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
02020210017272030312166.jpg
Siegenite, etc.

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
08121230017368390255892.jpg
Siegenite

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
01349840017368390261981.jpg
Siegenite

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
02020210017272030312166.jpg
Siegenite, etc.

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
08807020017272030413301.jpg
Siegenite

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
08459140017272030429573.jpg
Siegenite

Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK
Locality type:Colliery
Classification
Species:Siegenite
Formula:CoNi2S4
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Millerite2
Galena1
Data
Mineral Data:Click here to view Siegenite data
Locality Data:Click here to view Gelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:65666
Long-form Identifier:1:3:65666:9
GUID (UUID V4):0
Nearest other occurrences of Siegenite
0.4km (0.2 miles) ⓘRhondda Valley, Rhondda Cynon Taf, Wales, UK
3.4km (2.1 miles) ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, 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
8.6km (5.3 miles) ⓘInternational Colliery, Blaengarw, Bridgend, Wales, UK
9.1km (5.6 miles) ⓘCoed-Ely Colliery, Coed Ely, Rhondda Cynon Taf, Wales, UK
12.0km (7.5 miles) ⓘDeep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK
12.8km (7.9 miles) ⓘLlanilid West Opencast Coalmine, Llanharan, Rhondda Cynon Taf, Wales, UK
13.3km (8.2 miles) ⓘUniversal Colliery, Senghenydd, Caerphilly, Wales, UK
14.2km (8.9 miles) ⓘWindsor Colliery, Abertridwr, Caerphilly, Wales, UK
References
Ian Jones collection
 
and/or  
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