Fourth supplementary list of British minerals

Abstract

Hexagonal (Ln, CaH)Cu6(AsO4)a(OH)6.3H20 Pale-green fibres, resembling aurichalcite and giving the powder-pattern of mixite (q.v.), on mimetite in quartz on old specimens in the BM(NH), at Wheal Alfred, Phillack, Cornwall. The variety agardite-(Nd), according to F. Permingeat, priv. comm. Akermanite Ca2(MgSi, Al2) SiO: Tetragonal Small coloudess or faintly brown crystals in thermally altered limestone at Kilchoan, Ardnamurchan, Argyllshire, Scotland. S. O. Agrell (1965), Mineral. Mag. 34, 2. Algodonite near Cu6As Orthorhombic R. K. Harrison (I973). See under maucherite. 2 Consider, for example, the entries in M. Fleischer's 'Glossary of Mineral Species' (1975). ~) Copyright the Mineralogical Society 17o Alunite KA13(SO4)2(OH)6 Rhombohedral Small eolourless rhombs and white massive from a vein in a dolerite sill at Embleton quarry, near Cockermouth, Cumberland. A. W. G. Kingsbury (I955), Mineral. Mag. 32, 4x8. **Amalgam Hg-Ag alloy Cubic Thin dull brassy sheets on grey baryte, with tennantite in limestone, at Gortdrum mine, Oola, Co. Tipperary, Ireland. BM(NH) specimens, collected by A. J. Criddle and G. S. Bearne, I974. Amblygonite (Li, Na)A1PO4(F, OH) Triclinic See under montebrasite. Also, in leucogranite near the roof of the Tregonning granite, Rinsey, Cornwall. C. S. Exley and M. Stone (x964), in 'Present views of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soe. Cornwall), pp. I44-5, Anglesite (var. radian anglesite) Small (< o.I ram) white crystals of anglesite in uraniferous hydrocarbon at Wheal Speed, Cornwall, contain co-precipitated radium. Other localities for radium concentrations are given. R. K. Harrison and K. Taylor (I966), Bull. geol. Surv. Gt. Britain, 25, 4 I. * * Ardennite Orthorhombic Complex arsenate-vanadate-silicate of Mn, AI, etc. Orange-brown cleavages on vein quartz, at Merehead quarry, near Shepton Mallet, Somerset. Specimen found by C. Parkinson (1977) and given to BM(NH). Argentojarosite Rhombohedral AgF%(SO4XOH)6 Yellow, micaceous, and ochreous, at West Turf Pits mine, Grassington Moor, Yorkshire. Also, at Treore mine, St. Teath, Cornwall. A. W. G. Kingsbury (I964), Mineral. Mag. 35, li; idem (I964), in 'Present views of some aspects of the geology of Cornwall and Devon' (Roy. geol. Soc. Cornwall), p. 249. Arthurite Monoclinic near CuFe2(AsO4)2(O, OH)2.4H20 Thin apple-green crusts, alone or with pharmacosiderite or a hidalgoite-like mineral or both, on quartzose matrix at Hingston Down Consols,

Real-Time Observation of Fibrous Zeolites Reactivity in Contact with Simulated Lung Fluids (SLFs) Obtained by Atomic Force Microscope (AFM)

“…The sample MB2404 is erionite from Bog Hill Quarry, Northern Ireland, where it occurs in amygdales in various rhyolitic and basaltic lavas [42]. Due to the lack of chemical and structural data on erionite from this locality, a preliminary characterization was performed by means of single crystal X-ray diffraction (SC-XRD, Bruker AXS, Karlsruhe, Germany) and SEM-EDS (Zeiss, Jena, Germany).…”

Manganese oxides from the British Isles

“…RECENT lists of British minerals by Livingstone and Macpherson (1983), Bevins (1988) and Ryback et al (1988) have added significantly to the original work of Greg and Lettsom (1858) and subsequent updates by Spencer (1898Spencer ( , 1931Spencer ( , 1958 and Embrey (1978). This note reports on the discovery of six manganese oxide minerals previously unrecorded in Britain, summarizes the difficulties involved in the accurate identification of this group of minerals and, in this context, discusses the reliability of the early identifications.…”

“…Spencer (1898) added braunite and hausmannite although, according to , both minerals require confirmation. Hubnerite, jacobsite and pyrophanite were added by Spencer (1958), and Embrey (1978) included birnessite, coronodite, cryptomelane and lithiophorite in his list. Manganite, pyrolusite and romanechite were all identified by Chew (t978), confirming the occurrence of these minerals.…”

Spencerite from Kabwe, Zambia, and the infrared spectroscopy of the Kabwe zinc phosphates

“…The infrared spectrum of these laths indicates that they are the rare zinc phosphate spencerite, Zna(PO4)2(OH)2"3H20. Spencerite has only been reported before from two localities, Hudson's Bay mine, Salmo, British Columbia, the type locality (Walker, 1916(Walker, , 1918, and Turf Pits mine, Grassington, Yorkshire (British Museum (Natural History) specimen, collected by A. W. G. Kingsbury in 1963; see Embrey, 1978 . Spectra of spencerite and scholzite from Kabwe, off RSWB 83-9 and 83-6 respectively were measured under similar conditions (but using KBr plates) over the 4000-400 cm-t range using a Perkin Elmer 397 spectrophotometer, and gave similar spectra over that range to those shown.…”