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| Bulletin de la Société française de Minéralogie et de Cristallographie (1952): 75: 71. |
| Grey, I.E., Kampf, A.R., Price, J.R., Macrae, C.M. (2015) Bettertonite, [Al6(AsO4)3(OH)9(H2O)5]·11H2O, a new mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK, with a structure based on polyoxometalate clusters. Mineralogical Magazine, 79 (7) 1849-1858 doi:10.1180/minmag.2015.079.7.16 Golley, Peter, Williams, Richard (1995) Cornish Mineral Reference Manual. Endsleigh Book Co., Truro. 71pp. |
Penberthy Croft Mine, St Hilary, Cornwall, England, UK