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| Collins, J. H. (1871) A Handbook to the Mineralogy of Cornwall and Devon. Heard and Sons, Truro. |
| Braithwaite, R.S.W., and Cooper, B.V. (1982): Mineralogical Magazine 46, 119-126 |
| Rudler, F. W. (1905) A Handbook to a Collection of the Minerals of the British Isles - Mostly selected from the Ludlam Collection, in the Museum of Practical Geology. 253pp. 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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| Rumsey, M. S., Savage, M. A. (2008) Mineralisation at North Devon United Mine, Peter Tavy, Devon. Uk Journal of Mines and Minerals 29, 49-52 |
Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK