| Locality type: | Open-Cast Mine |
| Classification |
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| Species: | Siegenite |
| Formula: | CoNi2S4 |
| Comments: | Xls to 0.5mm |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Ankerite | ⓘ3 photos of Siegenite associated with Ankerite at this locality. |
| Chalcopyrite | ⓘ1 photo of Siegenite associated with Chalcopyrite at this locality. |
| Data |
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| Mineral Data: | Click here to view Siegenite data |
| Locality Data: | Click here to view Nant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK |
| Photo Gallery | View Gallery (3 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 39211 |
| Long-form Identifier: | 1:3:39211:4 |
| GUID (UUID V4): | 6d487717-566a-4456-8256-0031ce1c9a92 |
| Nearest other occurrences of Siegenite |
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| 19.2km (12.0 miles) | ⓘInternational Colliery, Blaengarw, Bridgend, Wales, UK |
| 19.4km (12.0 miles) | ⓘParc Colliery (Park), Cwmparc, Rhondda Cynon Taf, Wales, UK |
| 21.6km (13.4 miles) | ⓘWestern Colliery, Nant-y-moel, Bridgend, Wales, UK |
| 22.5km (14.0 miles) | ⓘRhondda Valley, Rhondda Cynon Taf, Wales, UK |
| 22.9km (14.2 miles) | ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK |
| 24.1km (14.9 miles) | ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK |
| 27.5km (17.1 miles) | ⓘPark Slip West (Margam Opencast), Cefn Cribwr, Bridgend, Wales, UK |
| 30.5km (19.0 miles) | ⓘDeep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK |
| 31.5km (19.6 miles) | ⓘCoed-Ely Colliery, Coed Ely, Rhondda Cynon Taf, Wales, UK |
| 33.6km (20.9 miles) | ⓘLlanilid West Opencast Coalmine, Llanharan, Rhondda Cynon Taf, Wales, UK |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (issue) | | ___ , ., ,___ . .. The Russell Society Dronch Mine, I Oal!eri D , 1..-, J Few Clicksl - -- LC•U~01....................................... Herodsfoot Mine Celebrated ..... ........................ ........bags being deposited on garage floors all over the UK. It was an altogether memorable trip - socially,...Society. Professor Bob Howie was major figure in UK geology and well known to many members. He will be...Curator: Mineralogy Specialist at National Museum Wales, has agreed to have his name put forward for the |  | | Journal (issue) | | ..... 5 6 7 8 10 12 12 13 16 16 17 News Items. UK Mining Snippets ................................................................................... UK and European mineral shows in2019 .................also a list of minerals shows taking place in the UK this year - along with some (but by no means all)...Society's central aims, the study and reporting of UK topographic mineralogy. The fact that reports of...of individual visits are regularly fed back to mine and quarry company managers and to the various other |  | | Journal (issue) | | Interesting Day in Prospect ........................ A New Mine in the North York Moors National Park?...................... Commissioning Underway at Drakewalls Mine (Hemerdon) What’s In a (Mineral) Name? ...........(14th November). These are perhaps the best of the UK shows and well worth a day of your time (other mineral...developments in terms of new mining enterprises in the UK. Hopefully the continuing up-turn (albeit slow) in...in the Niagara Falls district. He returned to the UK in the 1930s where he met Doris Holden. They were |
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Nant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK