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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Ullmannite from
Dolclettwr Mine (Treddol Mine), Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK


09653700017272025652310.jpg
Ullmannite

Dolclettwr Mine, Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK
09653700017272025652310.jpg
Ullmannite

Dolclettwr Mine, Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK
09653700017272025652310.jpg
Ullmannite

Dolclettwr Mine, Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK
Locality type:Mine
Classification
Species:Ullmannite
Formula:NiSbS
Comments:Cubic xls to 6mm embeded in quartz
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Ullmannite data
Locality Data:Click here to view Dolclettwr Mine (Treddol Mine), Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK
Data Identifiers
Mindat Occurrence Record ID:44735
Long-form Identifier:1:3:44735:3
GUID (UUID V4):0
Nearest other occurrences of Ullmannite
5.6km (3.5 miles) ⓘBwlch Glas Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
5.7km (3.5 miles) ⓘMynydd Gorddu Mine, Bontgoch (Elerch), Ceulanymaesmawr, Ceredigion, Wales, UK
6.4km (4.0 miles) ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
10.0km (6.2 miles) ⓘGoginan Mine, Goginan, Melindwr, Ceredigion, Wales, UK
18.2km (11.3 miles) ⓘFrongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
19.9km (12.4 miles) ⓘGrogwinion Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
19.9km (12.4 miles) ⓘGwaithgoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
22.7km (14.1 miles) ⓘGlogfawr Mine, Lisburne Lead and Silver Mines, Ysbyty Ystwyth, Ceredigion, Wales, UK
22.7km (14.1 miles) ⓘHendre Felen Mine (Hendre quarry), Ysbyty Ystwyth, Ceredigion, Wales, UK
References
 
and/or  
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