| Locality type: | Mine |
| Classification |
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| Species: | Muscovite |
| Formula: | KAl2(AlSi3O10)(OH)2 |
| Comments: | Off white crystal rossets to 1mm, commly staind yellow and red by Fe oxides. |
| Habit: | Thin platy rossets |
| Quality for species: | Poor for species, only of interest for locality collectors. (#) |
| Abundance at site: | Rare |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | Visually Identified |
| Data |
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| Mineral Data: | Click here to view Muscovite data |
| Locality Data: | Click here to view Bryn-yr-Afr Mine, Ponterwyd, Trefeirig, Ceredigion, Wales, UK |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 39043 |
| Long-form Identifier: | 1:3:39043:5 |
| GUID (UUID V4): | 23d47b22-2b90-4d2f-925f-bb44764e09db |
| Nearest other occurrences of Muscovite |
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| 7.2km (4.5 miles) | ⓘCastell Mine (Dyffryn Castell Mine; New Castell Mine; West Esgair Lle Mine; Gwaithddu Mine; Cripiau Bach Mine), Ponterwyd, Cwmrheidol, Ceredigion, Wales, UK |
| 11.9km (7.4 miles) | ⓘDyfngwm mine, Penegoes, Powys, Wales, UK |
| 50.7km (31.5 miles) | ⓘPrince Edward Mine (Moel Croesau), Trawsfynydd, Gwynedd, Wales, UK |
| 57.7km (35.9 miles) | ⓘDolyhir Quarry, Old Radnor, Powys, Wales, UK |
| 59.4km (36.9 miles) | ⓘLlechwedd slate quarry, Ffestiniog, Gwynedd, Wales, UK |
| 73.8km (45.8 miles) | ⓘLlandybie (Llandebie), Carmarthenshire, Wales, UK |
| 84.6km (52.5 miles) | ⓘCefn Coed Colliery, Crynant, Neath Port Talbot, Wales, UK |
| 84.8km (52.7 miles) | ⓘTal y Fan, Caerhun, Conwy, Wales, UK |
| References |
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| Reference Search (possible matching items) |
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 | | Journal (issue) | | UK JOURNAL M I N OF E S -----&----- M ·1 N E R A L S ISSUE N0.9 • SPRING - SUMMER 1991...EDITORIAL COVER PHOTO: Bayldonite. Penberthy Croft mine, St. Hilary, Cornwall. Globular aggregates to 0...collection. Photo: Mick Cooper. 3 CALCITE 4 The UK Joumol of Mi11es011dMinerals publishes articles of-interest...Simon Camm· Michael Merry ------- 16 ------THE VAN MINE S.J.S. Hughes -------26 ------A JOURNEY THROUGH... EDITORIAL LOOKING BACK In the course of its evolution the UK Joumol of Mints and Minerals has seen many small |  | | Journal (issue) | | UK Journal of Mines and Minerals Issue1Wo7 AUTUMN 1989 EDITORIAL BOARD P.J. Briscoe M.P.Cooper M.D...YourBookshelf 18 Bwlchglas Mine 20 Alpine Quartz L. Gautron 29 Muirshiel Mine 40 The Copper Trials...King Don the· 69th, the omnipotent intergalactic mine buff extraordinary has recently returned from a...to dwell on production difficulties at 2° Kelvin. Mine gases are still giving problems and production had...Pre-Carboniferous Rocks of West Shropshire and North Wales. B. Smith & H. Dewey. 1922 95pp., 13 text figs |
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