| Locality type: | Open-Cast Mine |
| Classification |
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| Species: | Quartz |
| Formula: | SiO2 |
| Comments: | Xls to 5cms |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Ankerite | 45 |
| Chalcopyrite | 21 |
| Dolomite | 2 |
| - var Iron-bearing Dolomite | 2 |
| Millerite | 1 |
| Siderite | 1 |
| Data |
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| Mineral Data: | Click here to view Quartz data |
| Locality Data: | Click here to view Nant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK |
| Photo Gallery | View Gallery (23 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 39209 |
| Long-form Identifier: | 1:3:39209:9 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Quartz |
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| 2.4km (1.5 miles) | ⓘDyffryn Cellwen coal workings, Onllwyn, Neath Port Talbot, Wales, UK |
| 6.1km (3.8 miles) | ⓘAberpergwm Colliery, Glynneath, Neath Port Talbot, Wales, UK |
| 10.1km (6.3 miles) | ⓘGlyn Gwilym Isaf Opencast, Clyne and Melincourt, Neath Port Talbot, Wales, UK |
| 19.2km (12.0 miles) | ⓘInternational Colliery, Blaengarw, Bridgend, Wales, UK |
| 19.7km (12.3 miles) | ⓘDare Colliery, Cwmparc, Rhondda Cynon Taf, Wales, UK |
| 22.9km (14.2 miles) | ⓘGelli Colliery (Globe), Gelli, Rhondda Cynon Taf, Wales, UK |
| 23.4km (14.5 miles) | ⓘCambrian Colliery, Clydach Vale, Rhondda Cynon Taf, Wales, UK |
| 24.1km (14.9 miles) | ⓘFerndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda Cynon Taf, Wales, UK |
| 28.7km (17.8 miles) | ⓘPrincetown, Caerphilly, Wales, UK |
| 28.9km (17.9 miles) | ⓘHafod Pit (Colliery), Trehafod, Rhondda Cynon Taf, Wales, UK |
| References |
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Nant Helen opencast coal mine, Onllwyn, Neath Port Talbot, Wales, UK