 | Grey, I. E., Betterton, J., Kampf, A. R., Macrae, C. M., Shanks, F. L., Price, J. R. (2016) Penberthycroftite, [Al6(AsO4)3(OH)9(H2O)5]·8H2O, a second new hydrated aluminium arsenate mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK. Mineralogical Magazine, 80 (7) 1149-1160 doi:10.1180/minmag.2016.080.069 | Journal (article/letter/editorial) | | December 2016, Vol. 80(7), pp. 1149–1160 Penberthycroftite, [Al6(AsO4)3(OH)9(H2O)5]·8H2O, a second new...aluminium arsenate mineral from the Penberthy Croft mine, St. Hilary, Cornwall, UK I. E. GREY1,*, J. BETTERTON2...Museum, 78 High Street, Haslemere, Surrey GU27 2LA, UK Mineral Sciences Dept., Natural History Museum of...Editor: Giancarlo Della Ventura] ABSTR ACT Penberthycroftite, ideally [Al6(AsO4)3(OH)9(H2O)5]·8H2O, is...arsenate mineral from the Penberthy Croft mine, St. Hilary, Cornwall, England, UK. It occurs as tufts of |  | | Report (issue) | | D(meas.) = n.d. D(calc.) = 2.02 Dehydrates to penberthycroftite between 67 and 97° C. Optical Properties:...Z=4 X-ray Powder Pattern: Penberthy Croft mine, St. Hilary, Cornwall, England. 13.65 (100), 13.51 (50)...1 33.7 36.2 100.0 (1) Penberthy Croft mine, St. Hilary, Cornwall, England; average of 4 electron microprobe...pharmacosiderite. Dehydrates to penberthycroftite at temperatures likely on oxidizing mine dumps. Association: Arsenopyrite...Arsenopyrite, chamosite, liskeardite, penberthycroftite, pharmacoalumite, pharmacosiderite, brochantite |  | | Journal (article/letter/editorial) | | aluminium arsenate minerals from the Penberthy Croft mine, Cornwall, UK IAN E. GREY1,*, HELEN E. A. BRAND2...Museum, 78 High Street, Haslemere, Surrey GU27 2LA, UK [Received 2 March 2016; Accepted 25 May 2016; Associate... and penberthycroftite, [Al6(AsO4)3(OH)9(H2O)5]·8H2O, two new minerals from the Penberthy Croft mine...mine, Cornwall, have flexible layer structures based on cornerconnected heteropolyhedral columns. Their response...157°C. The bettertonite sample transforms to penberthycroftite in a narrow temperature range of 67 to 97°C |  | | Report (issue) | | [Al6(AsO4)3(OH)9(H2O)5]·8H2O Penberthycroftite Crystal Data: Monoclinic. Point Group: 2/m. As crusts...4 X-ray Powder Pattern: Penberthy Croft mine, St. Hilary, Cornwall, England. 9.732 (100), 13.264 (46)...1 2.15 32.1 100.00 (1) Penberthy Croft mine, St. Hilary, Cornwall, England; average of 14 electron microprobe...Distribution: From the Penberthy Croft mine, St. Hilary, Cornwall, England. Name: For the mine that produced the...(M53452), and in the Natural History Museum, London, England (BM 2015,3). References: (1) Gray, I.E., J. Betterton |  | | Journal (article/letter/editorial) | | Museum, Department of Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen number...Museum, Department of Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen number...collections of the Mineralogy Department, St. Petersburg State University, St. Petersburg, Russia 199034, catalogue...No. 2015-024 Andychristyite PbCu2+Te6+O5(H2O) Aga mine, Otto Mountain, 1 mile NW of Baker, San Bernardino...2015-025 Penberthycroftite [Al6(AsO4)3(OH)9(H2O)5]·8H2O Penberthy Croft mine, St. Hilary, Cornwall, England |  | | Journal (issue) | | college I was very active in surface collecting the mine dumps and clandestine collecting underground in...He showed me around the office and said the three mine geologists were underground on their rounds. He...solicited Nathan Bartlett ( 1811-1895), who had been mine manager at the Mechanical Zinc Works in Newark,...morning I arrived at the appointed time to meet the 3 mine geologists who were Sam, Joe, and Tim (I have forgotten...last names). My job title was "swamper" and the mine geologists started going over what I would be doing |
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