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UK | |
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| Henwood, William Jory (1843) On the Metalliferous Deposits of Cornwall and Devon. Transactions of the Royal Geological Society of Cornwall, 5. 1-386 |
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| Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford, London. |
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| P. D. Trebilcock |
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| Gus Horsley collection |
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| Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro.
Hall, T.M. (1868): Edward Stanford (London), 168 pp.
Hogg, Thomas (1825) A Manual of Mineralogy - In which is shown how much Cornwall contributes to the illustration of the science. W. Polybank High Cross, Truro. |
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| Courtenay Smale, pers com. |
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| P Trebilcock collection,ex M Trudgeon clay worker collection. |
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| P, D, Trebilcock Collection. |
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| P, Trebilcock. Collection |
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| Hall, Townshend M. (1868) The Mineralogist's Directory: or, a guide to the Principal Mineral Localities in the United Kingdom of Great Britain and Ireland. Edward Stanford, London. |
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| [var. Opal-CT] Pring, A. (2020) A Review of the Classification of Opal with Reference to Recent New Localities. Minerals 2019, 9, 299.
Curtis, N.J.
Gascooke, J.R.
Johnston, M.R. |
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| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
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| Alysson Rowan collection |
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| [var. Opal-CT] Pring, A. (2020) A Review of the Classification of Opal with Reference to Recent New Localities. Minerals 2019, 9, 299.
Curtis, N.J.
Gascooke, J.R.
Johnston, M.R. |
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- Carclaze China Clay Pit (Baal China Clay Pit)
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
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| Barstow, R. W. (1982). Variscite from Hensbarrow china clay works, St. Austell, Cornwall. Mineralogical magazine, 46, 512. |
Gunheath China Clay Pit, Stenalees, Treverbyn, Cornwall, England, UK