 | | Journal (article/letter/editorial) | | crystals from the Gavilan Mine, Mexico, shows them to be pseudomorphs after groutite; a secondary lattice...the U. S. Geological Survey from Lake Valley, New Mexico, was found to give a distinctive fi.-ray pattern...on a separate portion 1. From Lake Valley, New Mexico, analysis by Michael Fleischer in 1942; X-ray study...per centZn in ramsdellitefrom the Gavilan Mine, Lower California, Mexico. A semiquantitative spectrographic...heated at 313" for 14 days. They also reported that groutite, MnO(OH), changedslowly to ramsdellite above 130" |  | | Journal (article/letter/editorial) | | system MnO-O-H~O show that the transformations groutite(a-MnOOH)-ramsdellite(MnO2)-pyrolusite{MnO~) are...of ramsdellite could not be prepared by heating groutite, even though the two structures are very similar...to the diasporegoethite group (BystrSm, 1949). Groutite, ~-MnOOH, is an oxyhydroxide isostructural with...ramsdellite (Gruner, 1947; Collin and Lipscomb, 1949). Groutite and ramsdellite are generally described as being...cells and space groups of groutite, ramsdellite, and pyrolusite are: M groutite ramsdellite pyrolusite |  | | Journal (article/letter/editorial) | | Manganese minerals in geodes from Chihuahua, Mexico ROBERT B. FINKELMAN, HOWARD T. EVANS, JR., AND...minerals have been observed in geodes from Chihuahua, Mexico. Ramsdellite occurs in a number of different habits...patterns suggest that it is pseudomorphous after groutite. Pyrolusite is found only in association with...mineralogy of geodes from North Central Chihuahua, Mexico, Finkelman et al. (1972) observed fifteen minerals...determination o f valence state; MANGANESE MINERALS FROM MEXICO 551 therefore all the manganese is reported as |  | | Journal (article/letter/editorial) | | studied in this system. Results on the series groutite-ramsdellitepyrolusite have been reported earlier...ramsdellite from Lake Valley, Sierra Country, New Mexico, supplied by Dr. Howard T. Evans, Jr. of the United...1496). Bixbyite (a-Mn20s) from Carton City, New Mexico, supplied by Dr. Howard T. Evans, Jr., gave well-shaped...direction. These changes are similar to the change groutite-ramsdellite discussed in an earlier paper (Dent...intermediate in composition and structure between groutite and ramsdellite, and to the extra 'weak phase' |  | | Journal (issue) | | 12-5_____________________ photo by H arold and Erica V an Pelt, Los A ngeles Publisher John S. White Editor Wendell...by W. Hunt Famous mineral localities: the Hilltop mine ..........................................121 by...by D. K. Miller and W. E. Wilson The Silver Bill mine, Gleeson, Arizona ................................of an Indian miner was found preserved in a salt mine, where he had been killed in a cave-in (see Thompson...Don Antonio de Mendoza, the Viceroy of New Spain (Mexico). Tejoc described seven fantastically wealthy Indian |  | | Report (volume) | | Geology in Canada: Hume, G. S., Gunning, H. G., 5. California, southern, pegmatites: 3. Arciniega, V. M. Geology...Billings, M. P., 1. look: Clifford, O. C., Jr. Mexico, Paricutin ash deposits, Ore detection by new devices:...Science and hobby: Meen, V. B. , 1. Pegmatites, California, southern: Mineralogy and the field geologist...geological history and Future: Conselman, F. B. , 7. Mexico: Guzman Jimenez, E. J., petroleum geology: Thomas...Gravenor, Cuebec, St. Lawrence Lowlands, C. P., 15. California, Barstow quadrangle: Trenton group, Ordovician: |  | | Book | | 353-416 257-320 321-384 225-288 137-224 CALIFORNIA ] 273-336 ARIZONA-IV ] 1-102 [ 17 / 1986...On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD, GENNE...Pradenas: Gold occurrences in Tuolumne County, California 18:41-45, 18:62-64 --with W. H. Wilkinson, R |  | | Report (volume) | | headings are: ALABAMA, ALBERTA, CANADA, JAMAICA, MEXICO, NEVADA, and UNITED STATES. CANADA and UNITED STATES...Academia Nacional de Ciencias Memorias y Revista. Mexico, D.F. Acad. Nat. Sci. Philadelphia Mon.; Notulae...Hancock Foundation Publications Occasional Papers. Los Angeles, Oalif. Am. Acad. Arts Sci. Proc. American...Asociaci6n Mexicana de Ge61ogos Petroleros Boletfn. Mexico, D.F. Asoc. Venezolana Geologla, Minerla y Petroleo...Bibliografico de Geofisica y Oceanografia Americanas. Mexico, D.F. Bol. Historia Nat. Boletin de Historia Natural |  | 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 |  | | Book | | s/n Apartado Postal 347 Guanajuato, Gto. 36020, Mexico Prof. Dr. Lwfs FONTBOTE Departement de Mineralogie... . . . . . . . . 147 X Contents El Aguilar Mine: An Ordovician Sediment-Hosted Stratiform Lead-Zinc.... . . . . . . . . . . . . . . . . 279 Machcan Mine: A Pb-Zn Ore Deposit in Pucara Sediments of the... Contents Sulfur Isotope Studies in the Zinc-Lead Mine San Vicente, Central Peru H. Gorzawski, L. Fontbote... . . . . . . . . . . . . . . 413 The Agustina Mine, a Volcanic-Hosted Copper Deposit in Northern Chile |
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