 | | Journal (article/letter/editorial) | | and that a is least and d0ol greatest for ferristilpnomelane. Effect of heat on stilpnomelane. H u t... Cobar, N.S.W. 2I F Cuyuna Range, Minnesota G H I8 Cuyuna Range, Minnesota II I3 I J Auburn...curves o f stilpnomelane f r o m the C u y u n a Range, Minnesota (sample F, Table I), were obtained using...by (OH)-; remaining H + is allocated as H~O. The range of each of the major components Si, A1, Mg, total...more than 2 components at the extremes of their range was considered unrepresentative. This procedure |  | | Journal (article/letter/editorial) | | ferrostilpnomelane,D = 285 -o-o i t Mg, for ferristilpnomelane, D = 2.89-o-oii Mg. Cell dimensions clearly...unique among layer silicates in accommodating a wide range of oxidation state of iron without major structural...conversion of (OH) to O, giving an extreme ferristilpnomelane composition KsFe3~rSi63Alg]O2t6.36H20. Neither...Columbia(Read, I973); R and W from the Coast Ranges, California. ~.) Copyright the Mineralogical Society 2...nontronite, which in turn breaks down to ferristilpnomelane. This process is clearly visible in thin |  | | Journal (article/letter/editorial) | | amphibole, apatite and ferristilpnomelane. 5: Blueschist facies, Laytonville, California (Muir Wood, 1982);...yet. The second problem is that the compositional range observed is also controlled by the thermodynamic...experiments, calderite only appears in a narrow f O2 range around the hematite=magnetite buffer (Lattard and...occurrence in nature of calderitic garnets over a range of P–T conditions, from the blueschist to the granulite...analyses (4 out of 362) project in the XFe ¼ 0.40–0.65 range and may represent mixed analyses near zone boundaries |  | | Journal (article/letter/editorial) | | gr., X-ray, I79 Bali Low copper mine, Capricorn Range, W. Australia, lavendulan, 369 BaUyclare, Co. Antrim...geochemistry of loveringite, 187 Cannington Park quarry, Somerset, djurleite, 172; durangite, 172; milarite... see EGGLETON (R. A.), 361 and M37 Cheesewring quarry, Linkinhorne, Cornwall, danburite, I7I Chernovite...anal., M [ 3; and see Augite, Diopside Coast Range, California, stilpnomelane, 36I and M37 Cobaltite, I.R...iron-bearing melts, Pt-Fe alloys for, 271 Coombe Farm quarry, Henbury, Somerset, wulfenite, 298 Coon Creek, |  | | Journal (article/letter/editorial) | | Fe2* (ferrostilpnomelane)to primarily Fe3* (ferristilpnomelane).Although Mg-dominant stilpnomelanes have...ferrostilpnomelaneand KrFelr*(Si63Ale)O2r6. 36HrO for ferristilpnomelane. Eggleton and Chappell (1978) have suggesteda...Table IVa), and Dunn et al. (1984) and show a wide range of chemical variations. Labeled points refer to...emphasized,however, that the corrugation is limited in range and that a conflgurational change involving tet...exception of the stilpnomelanes(Fig. 5a). The large range of compositions for the stilpnomelanesmay be a result |  | | Book | | NAIROBI DAR ES SALAAM CAPE TOWN Published in the USA by Oxford University Press, New York 2 Filmset...a veinlet of Co and Ni minerals in a serpentine quarry near Oxford, Llano Co., Texas, contains red-violet...[2Mn0.Si02]. Named from the locality, Alleghany County, North Carolina. [M.A., 5, 50.] 13th List [Wales;...1927 material from ‘The Geysers’, Sonoma Co., California. Not to be confused with allanite (T. Thomson...merchants, London. Also called ‘Princess Blue’. (The Quarry, London, 1908, vol. xiii, p. 257. W. G. Ren wick |  | | Book (edition) | | rock. New techniques have greatly extended the range of pressure and temperature at which phase transformations...present in the majority of olivines, the normal range being 0.01.0 wt.% CaO. Phosphorus in trace amounts...Fayalite, Gunflint Iron Formation, Minnesota-Ontario, USA (Floran, R.J. & Papike, J.J., 1978, J. Petrol., 19...basic volcanic and hypabyssal rocks (compositional range Fa30Fa87 is reported). Zoning may be detected by...olivine compositions range between Fo91 and Fo86. Olivines in the compositional range Fo80Fo50 are common |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Cisneros: Minerological Research Co., San Jose, California. Andrew M. Clark: Dept. of Mineralogy, Natural...Currier: Jewel Tunnel Imports, Baldwin Park, California. Stanley Dyl: Seaman Mineralogical Museum, Michigan...Canada. Richard C. Erd: U.S.G.S., Menlo Park, California. Howard T. Evans: U.S.G.S., Reston, Virginia...Claren N. (‘‘Si’’) and Ann Frazier: Berkeley, California. Carl Francis: Mineralogical Museum, Harvard...Paris, France. Legrand A. Gould: Pebble Beach, California. George E. Harlow: Dept. of Min. Sci., American |
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