| Locality type: | Intrusion |
| Classification |
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| Species: | Quartz |
| Formula: | SiO2 |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Dolerite | 6 photos of Quartz associated with Dolerite at this locality. |
| Data |
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| Mineral Data: | Click here to view Quartz data |
| Locality Data: | Click here to view Mynydd Preseli intrusions, Eglwyswrw, Pembrokeshire, Wales, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 320802 |
| Long-form Identifier: | 1:3:320802:1 |
| GUID (UUID V4): | c33ceb53-9f7f-44f8-b719-1bee63da0bf6 |
| Nearest other occurrences of Quartz |
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| 11.4km (7.1 miles) | ⓘLlanfyrnach Mine, Crymych, Pembrokeshire, Wales, UK |
| 13.0km (8.1 miles) | ⓘClarbeston, Wiston, Pembrokeshire, Wales, UK |
| 27.7km (17.2 miles) | ⓘSaundersfoot coast, Saundersfoot, Pembrokeshire, Wales, UK |
| 29.1km (18.1 miles) | ⓘNolton Haven, Nolton and Roch, Pembrokeshire, Wales, UK |
| 31.1km (19.4 miles) | ⓘSt Elvis Mine, Dinas Fawr, Solva, Pembrokeshire, Wales, UK |
| 32.1km (19.9 miles) | ⓘLittle Haven, The Havens, Pembrokeshire, Wales, UK |
| 35.4km (22.0 miles) | ⓘCystanog Mine (North Towy & Cystanog Mine; Llangunnor Mine; Grand Duchess Mine; North Towy Mine; Pen-Lan Mine; Carmarthen Mine; Hendir Mine), Vale of Towy, Llangunnor, Carmarthenshire, Wales, UK |
| 39.0km (24.2 miles) | ⓘQuartz vein outcrop, St David's Head, St David's and the Cathedral Close, Pembrokeshire, Wales, UK |
| 39.1km (24.3 miles) | ⓘGreenschist outcrops, St David's Head, St David's and the Cathedral Close, Pembrokeshire, Wales, UK |
| 41.3km (25.7 miles) | ⓘMarloes Bay, Marloes and St Brides, Pembrokeshire, Wales, UK |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (article/letter/editorial) | | Mathry Dyke, a quartz-dolerite intrusion of probable Carboniferous age in southwest Wales R. C A V E *...February 1989) Abstract - A previously unrecorded quartz-dolerite dyke some 40 km long and up to 15m wide...wide intrudes Lower Palaeozoic rocks in southwest Wales between Mathry and Llanboidy. It is of discontinuous...near the Bristol Channel, to the east of the South Wales Coalfield. 1. Introduction A low-level aeromagnetic...aeromagnetic survey of part of west Dyfed, South Wales (Fig. 1) (Cornwell & Cave, 1986) was carried out as |
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