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Dolomite from
Esgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Nant-y-Moch Reservoir area, Talybont, Ceulanymaesmawr, Ceredigion, Wales, UK

Mineral Species
Species:Dolomite
Formula:CaMg(CO3)2
Description
Comments:Major vein mineral at Esgair Fraith.
Habit:Massive
Colour:Creamy, brown
Quality of samples:Poor for species, only of interest for locality collectors. (#)
Rarity at site:Very common
Confirmation
Validity:Confirmed
Confirmation Methods:Optical Analysis
References
References:UKJMM No5
Data
Mineral Data:Click here to view Dolomite data
Locality Data:Click here to view Esgair Hir & Esgair Fraith mines (Cambrian Mine; Cardigan Consolidated Mine; Welsh Potosi Mine; Kylon Potosi Mine), Nant-y-Moch Reservoir area, Talybont, Ceulanymaesmawr, Ceredigion, Wales, UK
Nearest other occurrences of Dolomite
1.9km (1.2 miles) A Blaenceulan Mine, Talybont, Ceulanymaesmawr, Ceredigion, Wales, UK
2.1km (1.3 miles) B Eaglebrook Mine (Nant-Y-Cagel Mine; Nantycagl Mine; Nantygagal Mine; Dolrhyddlan Mine), Nant-y-Moch Reservoir area, Talybont, Ceulanymaesmawr, Ceredigion, Wales, UK
3.0km (1.9 miles) C Henfwlch Mine, Nant-y-Moch Reservoir area, Talybont, Ceulanymaesmawr, Ceredigion, Wales, UK
3.4km (2.1 miles) D Hafan Mine (Canninog Mine; Bwlch Canninog Mine), Nant-y-Moch Reservoir area, Talybont, Ceulanymaesmawr, Ceredigion, Wales, UK
3.7km (2.3 miles) E Ystrad Einion Mine (Dolgoch Mine), Furnace, Ysgubor-y-coed, Ceredigion, Wales, UK
3.7km (2.3 miles) F Bryn-yr-Afr Mine, Nant-y-Moch Reservoir area, Ponterwyd, Trefeirig, Ceredigion, Wales, UK
7.1km (4.4 miles) G Lodge Park Trial, Tre'r-ddol, Llangynfelyn, Ceredigion, Wales, UK
10.5km (6.5 miles) H Nantiago Mine (Plynlimmon Mine), Hafren Forest, Powys, Wales, UK
10.9km (6.8 miles) I Castell Mine (Dyffryn Castell Mine; New Castell Mine; West Esgairlle Mine; Gwaithddu Mine; Cripiau Bach Mine), Ponterwyd, Cwmrheidol, Ceredigion, Wales, UK
13.0km (8.1 miles) J Cwmrheidol Mine, Ystumtuen, Cwmrheidol, Ceredigion, Wales, UK
16.2km (10.0 miles) K Geufron Mine, Llanidloes, Powys, Wales, UK
29.4km (18.3 miles) L Clogau St Davids Mine (Clogau Mine; St David's Mine), Bontddu, Dolgellau Gold Belt, Gwynedd, Wales, UK
31.9km (19.8 miles) M Cefn Coch Mine (incl. Berthlwyd Mine; New California Mine), Ganllwyd, Dolgellau Gold Belt, Gwynedd, Wales, UK
33.1km (20.6 miles) N Ffridd-goch Mine, Ganllwyd, Dolgellau Gold Belt, Gwynedd, Wales, UK
34.0km (21.2 miles) O Nant-y-Car Mine, Rhayader, Powys, Wales, UK
46.9km (29.1 miles) P Llangynog Mine, Llangynog, Powys, Wales, UK
47.2km (29.3 miles) Q Prince Edward Mine (Moel Croesau), Trawsfynydd, Dolgellau Gold Belt, Gwynedd, Wales, UK
47.4km (29.4 miles) R Craig Rhiwarth Mine (Ochrycraig; North Llangynog), Llangynog, Powys, Wales, UK
67.0km (41.6 miles) S Talachddu Mine, Talachddu, Felin-fach (Felinfach), Powys, Wales, UK
87.3km (54.2 miles) T Vaynor Quarry, Trefechan, Merthyr Tydfil, Wales, UK
91.4km (56.8 miles) U Ty Gwyn Mine, Great Orme, Llandudno, Conwy, Wales, UK
91.8km (57.1 miles) V Old Mine, Great Orme, Llandudno, Conwy, Wales, UK
96.5km (60.0 miles) W Big Pit (Colliery), Blaenavon, Torfaen, Wales, UK
99.2km (61.7 miles) X International Colliery, Blaengarw, Bridgend, Wales, UK
99.3km (61.7 miles) Y Ferndale Pits (Blaenllechau Colliery), Tylorstown, Rhondda-Cynon-Taff, Wales, UK
99.9km (62.1 miles) Z Gelli Colliery (Globe), Gelli, Rhondda-Cynon-Taff, Wales, UK
100.4km (62.4 miles) 0 Bargoed Colliery, Bargoed, Caerphilly, Wales, UK
100.6km (62.5 miles) 1 Deep Navigation Colliery, Treharris, Merthyr Tydfil, Wales, UK
102.8km (63.9 miles) 2 Abercynon Colliery (Dowlais Cardiff), Abercynon, Rhondda-Cynon-Taff, Wales, UK
103.2km (64.1 miles) 3 Parys Mountain Mines (Paris Mine; Parys Mine; Mona Mine; Morfa Du Mine), Amlwch, Isle of Anglesey, Wales, UK
108.0km (67.1 miles) 4 Pant-y-Gaseg Mine, Amlwch, Isle of Anglesey, Wales, UK
108.9km (67.7 miles) 5 Coed-Ely Colliery, Coed Ely, Rhondda-Cynon-Taff, Wales, UK
110.8km (68.9 miles) 6 Bedwas Colliery, Bedwas, Caerphilly, Wales, UK
112.0km (69.6 miles) 7 The Biblins, Whitchurch, Herefordshire, England, UK
112.3km (69.7 miles) 8 Ty Coch Mine, Porthcawl, Bridgend, Wales, UK
113.6km (70.6 miles) 9 Machen Quarry, Machen, Caerphilly, Wales, UK
Mineral and/or Locality  
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