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UK | |
| Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London. |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
- St Day United Mines (Poldice Mines)
| Collection Richard De Nul |
| G.Curtis collection. |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
| Rollinson, G.K., Boutillier, N. Le, Selly, R. (2017) Cobalt mineralization in Cornwall – A new discovery at Porthtowan. Geoscience in South-West England, 14 (2) Ussher Society. |
| Dale Foster Collection |
| Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
| Weiß, S. (1986) Die Grubenbezirke St. Just und St. Ives in Cornwall [The mining districts of St Just and St Ives in Cornwal]. Lapis, 11 (5) 9-32 D. H. M. Alderton and N. J. Jackson Discordant Calc-Silicate Bodies from the St. Just Aureole, Cornwall Mineralogical Magazine 1978 42 : 427-434 |
| Royal Cornwall Polytechnic Society (1870): 38. Annual Report, pp. 30-31 |
Poldice Mine, St Day United Mines, St Day, Gwennap, Cornwall, England, UK