 | Mills, S. J., Nestola, F., Kahlenberg, V., Christy, A. G., Hejny, C., Redhammer, G. J. (2013) Looking for jarosite on Mars: The low-temperature crystal structure of jarosite. American Mineralogist, 98 (11) 1966-1971 doi:10.2138/am.2013.4587 | Journal (article/letter/editorial) | | Universität Innsbruck, Innrain 52, 6020 Innsbruck, Austria 4 Centre for Advanced Microscopy, Australian Natioanl...Salzburg, Hellbrunnerstr. 34, A-5020 Salzburg, Austria 2 Abstract Single-crystal diffraction of jarosite...distortion of the FeO6 being an order of magnitude lower: 0.0014 at 297 K (Table 3). More importantly, it...STRUCTURE OF JAROSITE crystal chemistry of acmite, diopside, hedenbergite, jadeite, spoumene, and ureyite...Bonnes, U., Kankeleit, E., Gutlich, P., Ming, D.W., Renz, F., Wdowiak, T., Squyres, S.W., and Arvidson, R |  | | Journal (article/letter/editorial) | | Nesbitt, 2002]. Unweathered igneous rocks plot in the lower left hand portion of the diagram (below the dashed...1B, BounceRock_Case_RAT, has a SO3 concentration lower than 0.75 wt.% (Gellert 435 and Rieder, 2006)...are shown in the legend, with the parenthetical lower-case letters indicating the corresponding glass... enstatite from Brantley and Chen (1995), and diopside from Chen and Brantley (1998). The equation was...Icarus 133, 98–108. Chen, Y., Brantley, S.L., 1998. Diopside and anthophyllite dissolution at 25 °C and 90 |  | | Journal (article/letter/editorial) | | carbonate and epiclastic rocks Cretaceous and Lower Tertiary volcanic rocks Pre-Campanian Bermeja complex...occurrence of amphibolite in the Bermeja Complex, but Renz and Verspyck (1962) were first to describe amphibolite...elements from the gneissic amphibolite plotted on the lower hemisphere of an equal area projection. A. Poles...is: (1) 2MgSi03 + c:aMgSi206 + 2H2O enstatite diopside water -> Mg3SioOs(OM).j + CaO + 2SiO2 serpentine... Upper diagram is modified from Tilley (1950); lower diagram is modified from Wager (1956). Downloaded |  | Ramkissoon, Nisha K., Pearson, Victoria K., Schwenzer, Susanne P., Schröder, Christian, Kirnbauer, Thomas, Wood, Deborah, Seidel, Robert G.W., Miller, Michael A., Olsson-Francis, Karen (2019) New simulants for martian regolith: Controlling iron variability. Planetary and Space Science, 179. 104722 doi:10.1016/j.pss.2019.104722 | Journal (article/letter/editorial) | | regolith (17.76 wt %), but the Mg concentration is lower than required and is approximately 3 wt% enriched... Columns of the Mayen lava flow, taken from the quarry from which the phono-tephrite was collected (Germany)...415 503 617 1326 Wollastonite Wollastonite Diopside Gehlenite 415 233 641 638 325 698 971 358 867...component characterisation. OUSR-1 also had a lower SiO2 (5.3 wt% lower than target), potentially resulting from...Grains (<5 mm) Wollastonite (82%) Quartz, (10%) Diopside (3%) Gehlenite (5%) 15 Features rich in Ca (80–81 |  | | Journal (article/letter/editorial) | | was affected by mineral/melt fractionations at lower (crustal) pressures. INTRODUCTION Until recently...on a Heise gauge. Based on the location of the diopside melting curve, pressures were corrected by −0...correction at 4 kbar nominal pressure (see Appendix for diopside melting calibration experiments). The oxygen fugacity...they remained for 1–4 h (longer times were for lower temperatures), and finally quenched at pressure...liquidus phase, and crystallize pigeonite + olivine at lower temperatures. Once pigeonite crystallizes, its abundance |  | Dehouck, E., Chevrier, V., Gaudin, A., Mangold, N., Mathé, P.-E., Rochette, P. (2012) Evaluating the role of sulfide-weathering in the formation of sulfates or carbonates on Mars. Geochimica et Cosmochimica Acta, 90. 47-63 doi:10.1016/j.gca.2012.04.057 | Journal (article/letter/editorial) | | surface or near-surface of Mars. On Earth, due to the lower sulfur content of the mantle and to the different...coming from Pakistan and was nearly pure. CPx was diopside from Vesuvium, Italy, with a formula of Ca0.9Mg1...desiccators has the advantage to allow a slightly lower, probably more realistic value for the atmospheric...and CPx–H2O2 samples are attributed to initial diopside. No secondary phase was found either by SEM. Orthopyroxene:...are indicated by an asterisk. Ol, olivine; CPx, diopside; OPx, enstatite; HPo, pyrrhotite; H2O, atmosphere |  | | Journal (article/letter/editorial) | | contact with foliated serpentinite. The southern quarry exposes fine-grained diabase or gabbro, in places...anthophyllite up to 10 cm thick extend the length of the quarry, about 10-15 m. Smaller quartz, epidote, and calcite...chlorite. The analysis of a specimen from the northern quarry at Mayaguez (PR42, Table 1) is similar to that...cent) Quartz Orthoclase Albite Anorthite Corundum Diopside Hypersthene Olivine Magnetite Ilmenite Apatite...An 41 Feldspar Ab by index 90-100 oils An 0-10 Diopside* Wo 50 by norm En 35 Fs 15 Augite* by Ca 41 optics |  | | Journal (article/letter/editorial) | | metavolcanics, and cherts (Mattson, 1960,1973; Renz and Verspyck, 1962; Tobisch, 1968; Volckmann 1984b...episode is represented by red ribbon chert with Lower Jurassic radiolaria found in the northern Sierra...north or south (Montgomery et al., 1994a). The Lower Jurassic chert is especially important, because... 1994b). (3) A third episode of Hauterivian to lower Albian age, suggesting bathyal depositional environments...amphibolite, or greenstone (Mattson, 1960, 1973; Renz and Verspyck, 1962; Tobisch, 1968; Mclntyre, 1975; |  | | Journal (article/letter/editorial) | | one RAT ground spot (Case). The RATted Case is lower in SO3 (0.56 vs. 3.66 and 4.63 wt%) and higher in...range from −3.6 to 0.0 QFM and are in all cases lower than estimates based igneous mineral that do not...and (C) Humboldt Peak (pl = plagioclase, di = diopside, hy = hypersthene, ol = olivine, mt = magnetite...indicates a larger range of temperatures that extend to lower values (1003–1459 K; Herd et al., 2002; Herd, 2003)...assemblages reflect more subsolidus re-equilibration and lower temperatures than the crystal-poor to aphyric Gusev |  | | Journal (article/letter/editorial) | | position 3. Light and middle REE abundances are lower than those given by FREY et al. (1971), but very...Temperatures were additionally calculated on the basis of diopside solution in Opx using experimental data of LINDSLEYand...has been challenged due to the small amount of diopside component soluble in Opx and the low degree of...= 4.1 for Ibi3-Cpx. Opxs have much lower LREE and moderately lower HREE abundances than Cpxs. Among the...Opx, and 01 are satisfactory only when modal Cr-diopside highly dominates over Amph and/or breakdown-products |  | | Journal (article/letter/editorial) | | and 1000 nm. Highcalcium clinopyroxenes (e.g., diopside) possess an absorption feature at or beyond 1050...2001 between 350 and 570 nm (Fig. 7, left panel, lower curve); the ratio of typical I /F across the bright...variations of ±0.004 I /F (Fig. 7, right panel, lower curve); at wavelengths longer than 540 nm, noise...0025 I /F at 550 nm to ±0.005 at 1000 nm (Fig. 8, lower curve). The ratio of I /F to noise variance ranged...in this research. ticeable in the UV data and lower band numbers of the 1999 data set (Figs. 7 and 8) |  | | Journal (article/letter/editorial) | | 1.1 Site 105 Site 105 is situated in an area of lower continental rise hills in 5251 m water depth. 633...the Cat Gap-, BlakeBahama-, Hatteras-, and the lower part of the Plantagenet Formation were analysed...analysed. 3.1.2 Site 106 Site 106 belongs to the lower continental rise area (water depth 4500 m). More...ranging from 0,2 cm/1000 a within the Eocene to Lower Miocene and 4.3 cm/1000 a during the Pleistocene...o Lithology Core depth in Olivine Augite Diopside Analcime Nepheline Anorthite Andesine Albite |  | Ondrejka, Martin, Bačík, Peter, Sobocký, Tomáš, Uher, Pavel, Škoda, Radek, Mikuš, Tomáš, Luptáková, Jarmila, Konečný, Patrik (2018) Minerals of the rhabdophane group and the alunite supergroup in microgranite: products of low-temperature alteration in a highly acidic environment from the Velence Hills, Hungary. Mineralogical Magazine, 82 (6) 1277-1300 doi:10.1180/mgm.2018.137 | Journal (article/letter/editorial) | | monoclinic monazite-type structure minerals but yield lower EPMA analytical totals because of the presence of...and B site contents (RGM), producing higher or lower totals (±5 wt.%) in some analyses. Despite these...Bonnes, U., Kankeleit, E., Gutlich, P., Ming, D.W., Renz, F., Wdowiak, T.J., Squyres, S.W. and Arvidson,...(1980) Ca1-xTh1-x[PO4]2·2H2O, a new mineral from Lower Silesia, Poland. Mineralogia Polonica, 11, 123–136...rhabdophane in the Lower and ?Middle Austroalpine tectonic units of the southern Sopron Hills (Austria). Mitteilungen |  | | Report (volume) | | Direccion Dissert____ Dissertation dist_______ district distrib_____. distribution Div______ division...report on the cobalt deposits in the Blackbird district, Lemhi County, Idaho/: Idaho Bur. Mines and Geology...Geology of the gold-bearing lodes of the Eocky Bar district, Elmore County, Idaho: Idaho Bur. Mines and Geology...Quicksilver and antimony deposits of the Stayton district, Calif.: U. S. Geol. Survey Bull. 931-Q, p. iv...1942. 2. Quicksilver deposits of the .Parkfield district, Calif.: U. S. Geol. Survey Bull. 936-F, p. iii |  | | Report (issue) | | hanerozoic sedimentation and orogeny ----------Lower Paleozoic rocks and. orogeny -----------Middle and...and Jurassic age and axes of Upper Triassic to Lower Jurassic plutons --13 6. Paleogeography and facies...in westernmost Colombia and abyssal to bathyal lower Tertiary sedimentary rocks overlying mafic volcanic...·be gneissose migmatites in the Haut Sinnamary district of French Guiana. Choubert (1964) reported that...sedimentary and volcanic were emplaced in ~tJ.mandine-diopside-hornblende formations-for example, the Carichapo |  | | Book | | 91 Labradosite 145 ie Lapis Lazuli 145 Diopside 114 Lazulite Dioptase 114 Lydian Stone Elephant... Part One: Introduction Portrait of Elizabeth of Austria by Francois Clouet Musée Condé, Chantilly. Photo:...pyrope gar- the discovered gems’ value. net, diopside, and olivine are sometimes ac- Today the underground...An asteriated gem may exhibit four rays (star diopside), six rays (star sapphire), or more rarely, twelve...nevertheless less attractive and their price is lower. Less valued gem species are cut and marketed only |  | | Book | | © 1993 Eigenverlag Dr. Reinhard Exel, Vienna/Austria: A-1100 Wien, Malborghetgasse 31 Gesamtherstellung:...Orten abgebaut. Die Vorkommen bei Langenlois und Zwettl im Bereich der Böhmischen ~fasse Niederösterreichs...Sammlern und Hobbyschleifern nicht selten solche Diopside, welche je nach Farbintensität facettiertem Olivin...zu entnehmen, daß diese grünen, geschliffenen Diopside aus dem Zillertal schon um die Jahrhundertwende...Literatur nirgends erwähnte Phänomene mancher Diopside vom Ochsner-Rotkopf hingewiesen werden, nämlich |  | Drake, Michael J., Newsom, Horton E., Capobianco, Christopher J. (1989) V, Cr, and Mn in the Earth, Moon, EPB, and SPB and the origin of the Moon: Experimental studies. Geochimica et Cosmochimica Acta, 53 (8) 2101-2111 doi:10.1016/0016-7037(89)90328-1 | Journal (article/letter/editorial) | | likelihood of attaining equilibrium. Therefore, at lower oxygen fugacities the proportion of Fe + Ni to pyrite...approximately 1.5 log units below iron-wustite, to lower values. Lower values were achieved by using variable amounts...abundance, and Mn may, in fact, be somewhat depleted. A lower limit on the Mn depletion can be “guesstimated”...of element depletion begins with elements with lower condensation temperatures than Li. For the SPB,...and oxides in the lower mantle, and that elemental abundances established in the lower mantle could be |  | | Journal (issue) | | borate known only from the Fuka mine, a marble quarry in Bicchu-cho near Takahashi, Okayama Prefecture...radiation. The RI, birefringence and SG values are all lower than those reported for parasibirskite (Kusachi...location, even if the sample’s SG was slightly lower. A search of the Mindat and Webmineral online databases...08 and 2.24 ct, are reportedly from the Kasula District in western Tanzania. Photo by J. Štubňa. Yellow...yellow opal samples reportedly from the Kasula District in the Kigoma region of western Tanzania, which |  | | Book (volume) | | Germany, the German Democratic Republic, Poland, Austria, Switzerland, Czechoslovakia, the Netherlands and...Precambrian—Lower Cambrian basic volcanism of the epimetamorphic series Metallogenesis related to Lower Cambrian... SEs phic series . 3 Metallogenesis related to Lower @rboniferous acid volcanism of the Hercynian epimetamorphic...deposits Metallogenesis associated with Upper Jurassic-Lower Cretaceous __ basic initial magmatism Metallogenesis...Dinaric metallogenic province The western Macedonian district Iron ore deposits . Manganese ore deposits Molybdenum |  | Shagam, R., Hargraves, R. B., Morgan, W. J., Houten, F. B. Van, Burk, C. A., Holland, H. D., Hollister, L. C. - Eds. (1972) Studies in Earth and Space Sciences. GSA Memoir 132. Geological Society of America doi:10.1130/mem132 | Report (issue) | | The number probably will drop off to some much lower steady-state value. It appears that the extremely...“pipes” in the rigid middle mantle and that very hot lower mantle is coming upward in these pipes and being...to fill the void created below in the more fluid lower mantle, and this rigid middle mantle is being added...may push down onto a hard bottom surface. If the lower surface supports part of the weight of the sinking...the mantle is necessary to remove heat from the lower mantle. The near equality of the oceanic and con¬ |  | Stalport, F., Glavin, D.P., Eigenbrode, J.L., Bish, D., Blake, D., Coll, P., Szopa, C., Buch, A., McAdam, A., Dworkin, J.P., Mahaffy, P.R. (2012) The influence of mineralogy on recovering organic acids from Mars analogue materials using the “one-pot” derivatization experiment on the Sample Analysis at Mars (SAM) instrument suite. Planetary and Space Science, 67 (1) 1-13 doi:10.1016/j.pss.2012.02.010 | Journal (article/letter/editorial) | | of complex organic compounds on Mars may require lower-temperature extraction protocols, such as chemical...heated up to 1000 1C. In addition, SAM will employ a lower temperature (r300 1C) chemical extraction and derivatization...(Mg3Si2O5(OH4)) 9.5% Augite ((Ca, Mg, Fe)2(Si, Al)2O6) 7.5% Diopside (Ca,MgSiO6) 5.7% Enstatite (MgSiO3) 3.5% Chromite...of solvent used in these experiments (150 mL) is lower than the total volume of MTBSTFA/DMF ( 500 mL)...parent rocks. The palygorskite clay found in the lower horizon is present at a much higher abundance (18 |  | | Journal (article/letter/editorial) | | starting material for consecutive experiments at lower T. In these experiments, oxidized starting glasses...of the preceding study. We assume a similar or lower XFe3? of the melt in graphite capsule experiments...volatile species (CO2, CH4 and CO) and a concomitant lower amount of H2O formed by the described mechanism...glass (eTab. 1). However, FeO* is consistently lower compared with the starting glass due to some iron...Analyses were calibrated against reference materials (diopside, strontium titanate, zirconium dioxide, plagioclase |  | | Journal (article/letter/editorial) | | [4, 5]. However, fine-grained rims are notably lower in Mg, S, and Ni than either typical regions of...of the two Z grains measured for Ti isotopes are lower than the solar ratios [6]. The first observation...of the Meteoritical Society: Abstracts THE POTY QUARRY CONGLOMERATIC BED: THE RECORD OF A TSUNAMI TRIGGERED...Cretaceous and Tertiary sedimentary units in the Poty quarry in the state of Pernambuco, Brazil. This conglomeratic...fragments and the mixing of eroded bioclasts of lower beds. The petrography of sampled outcrops and sedimentological |  | Salvatore, M.R., Mustard, J.F., Head, J.W., Cooper, R.F., Marchant, D.R., Wyatt, M.B. (2013) Development of alteration rinds by oxidative weathering processes in Beacon Valley, Antarctica, and implications for Mars. Geochimica et Cosmochimica Acta, 115. 137-161 doi:10.1016/j.gca.2013.04.002 | Journal (article/letter/editorial) | | melting and saturated active layer cryoturbation. At lower elevations and closer to the coast, the valleys...Ca-Montmorillonite Chlorite Dacite interstitial glass Diopside Dolomite Fayalite Forsterite Fo60 (Olivine) Gypsum...dominant at Fe abundances as low as 0.3 wt.%, which is lower than the amount of Fe contained within the average...likely enhanced by other diffusive mechanisms with lower temperature sensitivities (e.g., grain boundary... Foh J., Kankeleir E., Gütlich P., Ming D. W., Renz F., Wdowiak T., Squyres S. W. and Arvidson R. E |
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Renz quarry, Elsenreith, Kottes-Purk, Zwettl District, Lower Austria, Austria