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
Erglodd mine (Eurglawdd Mine), Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK


08557430017272016651757.jpg
Siegenite

Erglodd mine, Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
01859390017271982575757.jpg
Siegenite

Erglodd mine, Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
08557430017272016651757.jpg
Siegenite

Erglodd mine, Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
01859390017271982575757.jpg
Siegenite

Erglodd mine, Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
08557430017272016651757.jpg
Siegenite

Erglodd mine, Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
01859390017271982575757.jpg
Siegenite

Erglodd mine, Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
Locality type:Mine
Classification
Species:Siegenite
Formula:CoNi2S4
Comments:Bronzey coloured octahedral crystals to 1mm embedded in quartz. And as masses to several cms.
Anaylased specimes show a small Cu content
Habit:Octahedral crystal, Massive
Colour:Bronzey
Abundance at site:Rare
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Data
Mineral Data:Click here to view Siegenite data
Locality Data:Click here to view Erglodd mine (Eurglawdd Mine), Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:10079
Long-form Identifier:1:3:10079:9
GUID (UUID V4):0
Nearest other occurrences of Siegenite
1.3km (0.8 miles) ⓘBrynarian Mine (Cardigan Bay Consols Mine), Tre-Taliesin, Llangynfelyn, Ceredigion, Wales, UK
3.8km (2.3 miles) ⓘLoveden Mine, Ynystudor, Ysgubor-y-coed, Ceredigion, Wales, UK
7.6km (4.7 miles) ⓘEsgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
8.0km (5.0 miles) ⓘEaglebrook Mine, Tal-y-bont, Ceulanymaesmawr, Ceredigion, Wales, UK
80.9km (50.2 miles) ⓘNant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK
93.3km (58.0 miles) ⓘOld Mine, Great Orme, Llandudno, Conwy, Wales, UK
98.9km (61.4 miles) ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK
99.9km (62.1 miles) ⓘInternational Colliery, Blaengarw, Bridgend, Wales, UK
References
Rust, S. A. (1991) Siegenite from Erglodd Mine, Talybont, Dyfed, Wales. UK Journal of Mines and Minerals 9, 4
 
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