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| Day, Harry (1999) BMS Database, British Micromount Society. |
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| Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona.
Livingstone, A., Macpherson, H. G. (1983) Fifth supplementary list of British minerals (Scottish) Mineralogical Magazine, 47 (342) 99-105 doi:10.1180/minmag.1983.047.342.23
Livingstone, A., Macpherson, H.G., Jackson, B. (1976) Wroewolfeite and other langite-group minerals from Blackcraig, Kirkcudbrightshire. Mineralogical Magazine, 40 (316) 893-894 doi:10.1180/minmag.1976.040.316.12 |
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| Ian Jones collection |
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| Ian Jones collection. Aragonite confirmed by XRD at the National Museum of Wales |
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| Ian Jones collection |
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| Ian Jones collection |
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| Ian Jones collection |
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| Day, Harry (1999) BMS Database, British Micromount Society. |
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| Rust, S. A., Mason, J. S. (1988) The Minerals of Esgair Hir Mine, Bwlch-y-Esgair Hir, Ceulanymaesmawr, Dyfed, Wales . UK Journal of Mines and Minerals 5, 35-43 |
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| Day, Harry (1999) BMS Database, British Micromount Society. |
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| Rust, S. A. (1991) Siegenite from Erglodd Mine, Talybont, Dyfed, Wales. UK Journal of Mines and Minerals 9, 4 |
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| Day, Harry (1999) BMS Database, British Micromount Society. |
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| Mineralogical Magazine 1996 60 : 978-982. |
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| Ian Jones collection |
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| Ian Jones collection |
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| Day, Harry (1999) BMS Database, British Micromount Society. |
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| Ian Jones collection |
Gelli Colliery, Gelli, Rhondda Cynon Taf, Wales, UK