 | | Report (issue) | | by di®erence. Polymorphism & Series: Quartz, tridymite, coesite, and stishovite are polymorphs; inverts...siliceous sedimentary rocks. Association: \opal." Tridymite, quartz, sanidine, anorthoclase, fayalite, magnetite...Guanajuato, Mexico. In the USA, at Glass Mountain, Little Lake, and Sugarloaf Mountain, near Coso Hot Springs...Springs, Inyo Co., California; near Crater Lake, Klamath Co., Oregon; widespread in the San Juan Mountains...silicates, 179{230. (3) Mason, B.F. (1972) Lunar tridymite and cristobalite. Amer. Mineral., 57, 1530{1535 |  | | Journal (article/letter/editorial) | | THE LAVAS OF THE MODOC LAVA-BED QUADRANGLE, CALIFORNIA Howano A. Powons Assrnecr The Modoc Lava-Bed...which is seen the transition from the Cascade Mountain province to the Great Basin plateau province,...Basalt of Bear Mountain Tridymite Dacite of Haight Mountain. Andesite of Garner Mountain Basalt near Medicine...Basalt. ObsidianGroup Dacite.. Rhyolite Big Glass Mountain Pumice.... Pnrnor,ocv - Complex . . Introduction...Modoc Lava-bed quadrangle is located in northern California east of Mount Shasta and north of Lassen Peak |  | | Report (issue) | | Lower right: Glass Mountain rhyolite flow, Medicine Lake Highland Volcano, California, viewed from northwest...the lava dome at Mount St. Helens, Washington, (USA), 1981-1983 ........ D. A. Swanson, D. Dzurisin...600-year-old lavas of the Inyo volcanic chain, eastern California ......... 0c ccc eee cence cence nnes Daniel...extensive, hot, vapor-charged rhyodacite flow, Baja California, Mexico ........... Brian P. Hausback Physical...vent. The 550-year-old Inyo domes in eastern California are among the most thoroughly studied silicic |  | | Book (volume) | | 256 Composition, 256 Occurrence, 257 TRIDYMITE High-Tridymite 259 259 Structure, 259 Morphology,... 261 Physical Properties, 263 Middle-Tridymite Low-Tridymite Structure, 264 Morphology, 264 264 264...Synthetic Silica Glass Fulgurites INDEX GLASSES 319 319 321 Meteoritic Silica Glass Ash Glass SILICEOUS...High-quartz 573-870° Low-tridymite Below 117° Orthorhombic Middle-tridymite High-tridymite 117—163° 163—-1470°...Herschel, Biot, Weiss, Rose, and Des Cloizeaux. Tridymite, the first polymorph of silica to be recognized |  | | Report (issue) | | Place, P.O. Box 9 140, Boulder, Colorado 80301-9140, USA. Copyright is not claimed on any material prepared...Place, P.O. Box 9 140, Boulder, Colorado 80301-9140, USA www.geosociety.org Printed in U.S.A. GSA Books Science...3. Geotechnical properties of tuffs at Yucca Mountain, Nevada . . . . . . . . . . . . . . . . . . ....Windantide Place, Freeland, Washington 98249-9683, USA ABSTRACT Tuffs have been a part of man’s environment...(pyroclastic flow deposits), in which the pumice and glass shards have been sintered by heat immediately after |  | | Book | | MINERALS OF CALIFORNlA 299" 257889 PEMBERTON' HOFE CALIFORNIA MINERALS 2995 SEP 1933 OINCO Digitized by...org/details/mineralsofcalifo00pemb MINERALS OF CALIFORNIA - MINERALS OF CALIFORNIA H. Earl Pemberton ~ VAN NOSTRAND...H. Earl, 1907Minerals of California. An updating of: Minerals of California: centennial volume, 1866-1966...index. 1. Mineralogy - California. 2. Mines and mineral resources - California. I. MUidoch, J oseph, 1890Minerals...1890Minerals of California. 11. Title. QE375.C32P45 549.9794 81-15963 ISBN 0-442-274882 AACR2 Preface | | | Book | | 7 257989 R q549 PEMBERTON, H.E MINERALS OF CALIFORNIA P 2995 IpSl q 49 f 07. 257889 ^ pe B T...org/details/mineralsofcalifoOOpemb MINERALS OF CALIFORNIA MINERALS OF CALIFORNIA H. Earl r i L ] Pemberton ...H. Earl, 1907Minerals of California. An updating of: Minerals of California: 1866-1966 / by Joseph Murdoch...Includes index. 1. Mineralogy -California. 2. Mines and mineral resources- California. I. Murdoch, Joseph, 1890Minerals...1890Minerals of California. II. Title. centennial volume, QE375.C32P45 ISBN 0-442-27488 2 549.9794 |  | | Report (issue) | | PROCESSES BENEATH LONG VALLEY CALDERA, EASTERN CALIFORNIA VOLUME I 24 - 27 January 1984 Sponsored by U...Menlo Park, California 94025 Roy A. Bailey U.S. Geological Survey Menlo Park, California 94025 Allan...not imply endorsement by the USGS. MENLO PARK, CALIFORNIA 1984 CONFERENCES TO DATE Conference I Abnormal...Processes Beneath Long Valley Caldera, Eastern California Open-File No. 84-939 Workshop XX The 1886 Charleston...Processes Beneath Long Valley Caldera, Easthern California David P. Hill, Alan S. Ryall, and Roy A. Bailey |  | | Journal (article/letter/editorial) | | and trace amounts of interstitial brown glass and tridymite (Katsui and Takahashi, 1960). Andesites of...andesites often carrying eral, and brown glass. A small amount of tridymite and alkali-feldspar are also found...colorless glass, plagioclase, augite, hypersthene, and Fe-Ti mineral. Alkali-feldspar, tridymite and cristobalite...andesite and dacite: evidence of mixing at Glass Mountain in California and at other circum-Pacific volcanoes |  | | Book (edition) | | LIBRARY 3 1111 01599 4096 Rocks and Minerals of California THIRD REVISED EDITION NATUREGRAPH PUBLISHERS...LIBRARY GA BAPAEL CALIFORALA Rocks and Minerals of California THIRD REVISED EDITION Color Photographs W...greatly indebted to Dr. Gordon Oakeshott of the California State Division of Mines for his kind examination... Mrs. Eleanor M. Learned, who worked for the California Division of Mines and Geology, for looking over...Lactic ialiv ess Winib baie A wa ar Minerals of California................. 02... OTST TSS IGE Ee a, I RS |  | | Report (issue) | | the Mount Morrison Quadrangle Sierra Nevada, California GEOLOGICAL SURVEY PROFESSIONAL PAPER 385 Prepared...Prepared in .cooperation with the State of California, Department of Conservation and Geology, Division...the Mount Morrison Quadrangle Sierra Nevada, California By C. DEAN RINEHART and DONALD C. ROSS With...385 Prepared in cooperation with the State of California, Department of Conservation and Geology, Division...the Mount Morrison quadrangle, Sierra Nevada, California, by C. Dean Rinehart and Donald C. Ross. With |  | | Journal (article/letter/editorial) | | units at the potential repository level, Yucca Mountain, Nevada Zell E. Petermana,*, Paul L. Clokeb a...Survey, MS 963 Box 25046 DFC, Denver, CO 80225, USA Science Applications International Corporation, MS...423 1261 Town Center Drive, Las Vegas, NV 89144, USA b Received 15 August 2000; accepted 5 January 2001...20 core samples from the cross drift at Yucca Mountain, Nevada. Previous analyses of outcrop and core...high-level radioactive waste repository at Yucca Mountain, Nevada. Core samples from drill holes in the |  | | Book | | Herbert Kroll (Münster), Rob Lavisnky (Dallas, USA), Heike Lehner (Heidelberg), Joachim Lorenz (Karlstein...4. By contrast, in isotropic material, e.g., in glass, the vectorial properties are the same along different... . Fig. 1.1 Group of quartz crystals, Arkansas, USA, approximately original size 1.1 Crystal Morphology...calcite and aragonite, CaCO3, α-quartz, β-quartz, tridymite, christobalite, coesite and stishovite, SiO2....by the SiO2 polymorphs α-quartz, β-quartz and tridymite, whose transformations may be either displacive |  | | Journal (article/letter/editorial) | | Fine of Corning Glass Works. The rhyolitic obsidian was collected from Little Glass Mountain, near the Newberry...Newberry Craters area in Oregon, USA. Microprobe analyses of the glass starting materials are given in...five minutes. Quenched samples were mounted on a glass slide and cut with a wafering saw to produce a cross...polished outer faces. The cross sections from the glass samples were prepared as polished thin sections...alkali loss to the Ar gas pressure medium from glass within - 5/zm of the sample surface; analyses closer |  | Goff, Fraser, Love, Steven P, Warren, R.G, Counce, Dale, Obenholzner, J, Siebe, Claus, Schmidt, Stephen C (2001) Passive infrared remote sensing evidence for large, intermittent CO2 emissions at Popocatépetl volcano, Mexico. Chemical Geology, 177 (1) 133-156 doi:10.1016/s0009-2541(00)00387-9 | Journal (article/letter/editorial) | | Alamos, NM 87545, USA b NIS-2, Los Alamos National Laboratory, Los Alamos, NM 87545, USA c Department of...Andesite Andesite Dacite Andesite Glass Glass Glass Glass Glass 60.13 0.878 16.21 5.94 0.095 5.60...of January 1, 1998; from Tlamacaz buildings. g Glass patches from a single polished thin section from...2 Al-rich glass Al 2 O 3 s 48.9, SO 3 s17.8, P2 O5 s14.2, SiO 2 s 5.4 Žwt.%. Si-rich glass SiO 2 s85...recognized by its color of glass in polished thin sections. Silicic glass, plagioclase, and hornblende |  | | Book (volume) | | ..........................................49 California ..............................................................548 Table of Maps Page Alabama County Map ...................................................................................4 Alaska County and Stream Map ......................................................................22 Arizona County Map ................................................................................49 Arkansas County Map .......................................... |  | | Journal (article/letter/editorial) | | occur in a very fine-grained matrix composed of glass and mineral fragments. Some of the fragments of...wasendogenous it could have been quenched into the matrix glass and derived' from rocks existing prior to breccia...amounts of water on the devitrification of the matrix glass of impact-ignimbrites might induce oxidation phenomena...affecting the amphibole and mica phenocrysts of the Glass Mountain rhyolite where they are enclosed in post eruptive...Scripps Institution of Oceanography University of California La Jolla, 92037 A characteristic component in |  | | Journal (article/letter/editorial) | | University of North Carolina, Chapel Hill, NC 27599, USA Abstract. One-atmosphere, anhydrous phase equilibria...materials were an alkali basalt from Pisgah Crater, California, and a high-silica rhyolite from a portion of...Bishop Tuff exposed in the Owens River Gorge, California. The alkali basalt (sample P-21 of Hughes 1986)...center of sec. 9, T.5S., R.31E., of the Casa Diablo Mountain 15' quadrangle (see Rinehart and Ross 1957). It...opaque minerals set in a brown, slightly devitrified glass matrix. Cavities filled with vapor-phase minerals |  | | Report (issue) | | holes at Medicine Lake Volcano, northeastern California, based on fluid inclusion and hydrothermal mineralogy...Survey, M/S 910, 345 Middlefield Road, Menlo Park, California 94025 2U.S. Geological Survey, Alaska Volcano...Location map of Medicine Lake volcano, northern California .............. 30 Topographic map of Medicine...inclusions from Medicine Lake volcano, northern California ................. videocassette 1 & page 97 TABLES...Cascade shield volcano in the northeastern part of California, is one of the most promising geothermal energy |  | | Journal (article/letter/editorial) | | using internal isochrons on separated minerals and glass or groundmass (see references in Gill et al., 1992)...displayed by the different minerals and the whole rock, glass, or groundmass: the larger the U/Th range, the better...Fukuoka and Kigoshi, 1974). Fukuoka (1974) used glass-zircon pairs to date a few dacitic pumices from...high-temperature polymorphs of SiO2 (cristobalite and tridymite). Oxide minerals were initially titanomagnetites...the isotopic record in precaldera lavas of Glass Mountain: Earth and Planetary Science Letters, v. 94 |  | | Book (volume) | | ..........................................39 California ...............................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...pegmatites and ore-bearing veins. Prior to the California gold rush of 1849, this portion of Alabama experienced...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a |  | | Book (volume) | | ..........................................39 California ...............................................rights, so remember you were told. If in doubt, a county map will tell you who the legal owner is. Good...pegmatites and ore-bearing veins. Prior to the California gold rush of 1849, this portion of Alabama experienced...gemmy qualities for cutting and polishing. AUTAUGA COUNTY PRATTVILLE, N. 6 mi., and just E of the Birmingham...were well known to prehistoric Indians.) BARBOUR COUNTY BAKER HILL, SE 1 mi. : 1 in a deep ravine, as a |  | | Book | | Title QE461.H256 1987 552'.1 ISBN 0-470-20781-7 (USA only) 86-19079 Set in 10/12pt Linotron Times Produced...rhyolitic rocks. range of Washington to northern California are relatively infrequent. There is no direct...Oregon) (central Oregon) (central Oregon) (northern California) 10 39 90 85 69 45 41 9 13 29 Dacite-Rhyolite... There are Quaternary volcanoes in the Kunlun mountain range, which forms the northern edge of the Tibetan...have been the only ones to erupt in the mainland USA and Canada, but there are in fact many other Recent |  | | Journal (article/letter/editorial) | | are less than pyrox sizes of 0.17, Groundmass Glass is present, more in the Bunmei and An-ei flows...sent in interstices. an grouped clusters, clear glass being pre The historic lava flows contain two...phenocrysts, clear ones and ones with abundant glass inclusions. The inclu sions present a sieve texture...which has zones densely clouded by abundant dusty glass inclusions. Tsuchiyama and Takahashi (1983), and...hornblende. **The rock contains a small amount of glass in interstices. heated above solidus temperatures |  | | Journal (article/letter/editorial) | | spheres of this composition are embedded in rhyolitic glass surrounding both extensively melted, sieve-textured...resorbed, granite-derived, quartz xenocrysts with glass-orthopyroxene-clinopyroxene coronas. Intense, quasipervasive...the predominant, apparently conjugate, silicate glass (70–78 wt % SiO2) is relatively consistent in composition...illite-montmorillonite-chlorite occur in contact with unaltered glass in unveined andesites, implying endogenous sources...intrusive rocks and the underlying breccias, and glass is preserved in most units. However, pulverulent |
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