| UK | | |
| Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 101-102 | |
| Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 102 | |
| Hawkins, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 29-48; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Econ Geol (1995) 90:495-519 | |
| Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp. | |
| Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 101-102; Rocks & Min.: 60(1):24 | |
| Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386. | |
| Russell, A. (1920): Mineralogical Magazine 19, 19-22 | |
| Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 114 | |
| P Haas collection | |
| collected by Richard de Nul | |
| Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 106 |
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