 | Morrill, Penny L., Kuenen, J. Gijs, Johnson, Orion J., Suzuki, Shino, Rietze, Amanda, Sessions, Alex L., Fogel, Marilyn L., Nealson, Kenneth H. (2013) Geochemistry and geobiology of a present-day serpentinization site in California: The Cedars. Geochimica et Cosmochimica Acta, 109. 222-240 doi:10.1016/j.gca.2013.01.043 | Journal (article/letter/editorial) | | present-day serpentinization site in Califor‐ nia: The Cedars Penny L. Morrill, J. Gijs Kuenen, Orion J. Johnson...present-day serpentinization site in California: The Cedars, Geochimica et Cosmochimica Acta (2013), doi: http://dx...present-day serpentinization site in California: 2 The Cedars 3 4 Penny L. Morrill1,2*, J. Gijs Kuenen3, Orion...discharging from 22 serpentinized peridotite of The Cedars, CA, were investigated for their geochemistry and...shallow source with sufficient 25 contact with The Cedars’ peridotite body to be altered geochemically by |  | | Report (issue) | | stratigraphic and structural framework studies in The Cedars quadrangle, southern Shoshone Range Thomas E. Moore...ARBM, Alligator Ridge-Bald Mountain; G, Getchell Mine; JC, Jerritt Canyon Mining District; M, Midas; RM...studies in the southern Battle Mountain trend, The Cedars area, Shoshone Range, in Tosdal, R.M., ed., Contributions...significant amounts of magnetic minerals (commonly magnetite). The most common rock types containing a significant...OPEN-FILE REPORT 98-338 Magnetotelluric Profiles magnetite are igneous rocks and certain metamorphic rocks |  | Miller, Hannah M., Matter, Jürg M., Kelemen, Peter, Ellison, Eric T., Conrad, Mark E., Fierer, Noah, Ruchala, Tyler, Tominaga, Masako, Templeton, Alexis S. (2016) Modern water/rock reactions in Oman hyperalkaline peridotite aquifers and implications for microbial habitability. Geochimica et Cosmochimica Acta, 179. 217-241 doi:10.1016/j.gca.2016.01.033 | Journal (article/letter/editorial) | | by olivine, pyroxene, brucite, serpentine and magnetite. At depth, Febearing brucite is commonly intermixed...surface, olivine and brucite are lost and increased magnetite and serpentine is detected. Micro-Raman spectroscopy...of both Fe(II) and Fe (III) in the serpentine. Magnetite veins are also closely associated with this second...second generation serpentine, and 2–10 lm magnetite grains overprint all minerals in the drill cuttings...silica in the aquifer fluids to generate late-stage magnetite, additional serpentine and dissolved H2. Dissolved |  | Marques, J.M., Etiope, G., Neves, M.O., Carreira, P.M., Rocha, C., Vance, S.D., Christensen, L., Miller, A.Z., Suzuki, S. (2018) Linking serpentinization, hyperalkaline mineral waters and abiotic methane production in continental peridotites: an integrated hydrogeological-bio-geochemical model from the Cabeço de Vide CH4-rich aquifer (Portugal) Applied Geochemistry, 96. 287-301 doi:10.1016/j.apgeochem.2018.07.011 | Journal (article/letter/editorial) | | 143 (lizardite, antigorite and chrysotile), magnetite and residual chromite, plus brucite and carbonates...olivine + pyroxene + H2O → serpentine ± brucite ± magnetite + H2 TE D 398 where serpentine means one or...and pyroxene 618 through Fe2+ oxidation and magnetite (Fe3O4) formation (e.g., McCollom and Bach, 2009)...discharging from serpentinized peridotite of The Cedars, California, USA, 638 were investigated for their...9), which was originally 660 isolated from The Cedars serpentinization site and known as a hydrogen oxidizing |  | | Journal (article/letter/editorial) | | Emirates Al Farfar U.S. California Coastal Range, The Cedars Coastal Range, CROMO Aqua de Ney Incomplete or...Caledonia Massif du Sud (e.g., Prony Bay, La Crouen) Norway Leka Philippines Palawan (onshore and offshore)...reaction: olivine + water + CO2 = serpentine + magnetite + CH4. However, the generalized reaction of Eq...assumed to form autonomously, for example, as magnetite during serpentinization. Overall, as abundant...chromium and their associated minerals, e.g., magnetite, awaruite, and chromite, are classic metals known |  | | Journal (article/letter/editorial) | | pH of ~6), contain a variety Fe(III) oxides (magnetite and hematite), Fe(III) (oxy)hydroxides, phyllosilicates...presence of Cr-spinels, specifically chromite and Cr-magnetite. These phases are resistant to weathering and...(3) Nickel Mountain, Riddle, Oregon; (4) Harvard Mine, Jamestown, California; (5) Jasper Ridge Biological...Preserve, Stanford, California; and (6) Pillikin Mine, El Dorado, California (Fig. 1). A basalt-derived...Nickel Mountain (B), Harvard Mine (C), New Caledonia (D), Pillikin Mine (E), and Jasper Ridge Biological |  | | Journal (article/letter/editorial) | | flatten out. The foot of the cone is overgrown with cedars (kedrovym stlannikom) and occasional low (4- M...bottoms of this volcano's slopes are overgrown with cedars and young larch trees. The upper part of the volcano...opaque"nonpolarized dark-brown glass filled with fine magnetite and hematite powder. The refractive index of this...of olivine (0.05 mm), irregular particles of magnetite and platelets of ilmenite. In the glassy-crystalline...Ng-Np 0.022-0.024), which is evidently augite. Magnetite forms finely-dispersed dust-like particles or |  | | Journal (issue) | | this area and predominantly from the Oregon Chrome mine (No. 31, see map on following page). Geography....just north of the Chrome King mine (No. 44) and the one west of the Crown mine (No.5) are prominent topographic...Approximate projection of zone 0 MILES Crown chrome mine (zone A) High View chromite (zone E) Geologic... Zone C twin Ced~per & lower) Old Casey Youngs Mine {Neme unknown} Millers Dream ,.........-----.....no. 4 portions together with minor amounts of magnetite and chromite. Serpentinization is more complete |  | | Journal (article/letter/editorial) | | minerals in serpentinites include talc, brucite, and magnetite. Although once thought to be anomalous, ultramafic-hosted...Fe [Fe(III)], which typically precipitates as magnetite in serpentinites, while hydrogen from water is...reaction: 2(FeO)rock H2O Fe3O4 H2, (1) Magnetite where (FeO)rock refers to the ferrous component...067H2 Brucite (2) Magnetite where Fe(II) is supplied from the olivine, and magnetite and H2 occur as reaction...their structure, which leads to the formation of magnetite (and, consequently, H2). In rocks that have higher |  | | Journal (article/letter/editorial) | | University of Bergen, Allegaten 41, N-5007 Bergen, Norway MA NU ABSTRACT Hydrogen, methane and ammonium...catalytic minerals SC R such as chromite and magnetite. Methane was also detected and increased with...result of a ED FFT reaction in the presence of magnetite and chromite catalysts. Based on a strong correlation...correlation between H2 and spinel-phases such as magnetite and chromite, Mayhew et al. PT (2013) inferred...serpentinized dunite in the Leka ophiolite complex, mid-Norway, we detected H2, CH4 and Nspecies in the percolating |  | Mayhew, L. E., Ellison, E. T., McCollom, T. M., Trainor, T. P., Templeton, A. S. (2013) Hydrogen generation from low-temperature water–rock reactions. Nature Geoscience, 6 (6) 478-484 doi:10.1038/ngeo1825 | Journal (article/letter/editorial) | | minerals—specifically peridotite, pyroxene, olivine and magnetite—with anoxic fluids at 55 and 100 ◦ C, and monitored...could occur at low temperatures (for example, The Cedars, California12 ; Lost City13 ; Samail Ophiolite...partitioning of Fe(iii) into serpentine (relative to magnetite) and Fe(ii) into secondary minerals such as brucite...Fe contents (hedenbergite, petedunnite), and magnetite. All of the reactants included minor mineral phases...Carlos peridotite, San Carlos olivine, fayalite, magnetite and petedunnite, a Zn- and Mn-bearing pyroxene |  | | Journal (article/letter/editorial) | | contained opaque inclusions of laihunite and magnetite. A 2.5-cm, dark brownish-red, modified tetrahedron...Counties. Twin crysare quartz, amphibole, and magnetite (Eckel 1997). The tal is 4.2 cm tall. Dan and...1966a; Pearl 1972). antigorite, calcite, and magnetite. Saint Peters Dome (including “nonfluoride” minerals...lepidolite, lollingite, kaolinite, kasolite, magnetite, are sometimes found with long bladed crystals...1947: Willman, pers. com., 1982). Johnny Feldspar mine. Minerals reported include fluorupatite, muscovite |  | | Journal (issue) | | the Missouri Ozarks, supports a dense growth of cedars. These trees appear darker than the surrounding...most photographs, therefore, anything so large as a mine dump stands out like the proverbial sore thumb....Many likely place.~ for good collecting, such as mine dumps, quarries, and road cuts, can usually be detected...cut along one side of a canyon, bare rock walls, cedars, mesquite, flowering cactus, yellow, purple and...not be granted except in emergencies. I had gotten mine just in time. T he wo~ld-fam~us Carlsbad Caverns |  | | Report (issue) | | dinary trace-element accumulations in roadside cedars near Centerville, Mo., by J. J. Connor, H. T. Shacklette...southern California: California Dept. Nat. Res., Div. Mine& Bull.170, p. ~1. B512 PALEONTOLOGY AND STRATIGRAPHY...chlorite, gahnite, garnet, tourmaline, and accessory magnetite, sphene, a patite, and zircon. Except for dikelike...plagioclase. In the quartz gabbro, quartz and magnetite embay the hornblende and other earlier :formed...tholeiites have similar chemical analyses and min- Magnetite . __ __ 10. 1 4. 6 4. 4 2. 5 1.5 1.7 eralogy; |  | | Journal (article/letter/editorial) | | quartzites, heavily charged with hematite and magnetite, and the crocidolite has been changed to the quartz...or of the rainfall upon them to account for the cedars stopping at this point, one is left, by the process |  | | Journal (issue) | | miner, I was also told, made a fortune out of his mine but had died without revealing where he hid his...black sand consisted of 65% ilmenite and 35 % magnetite. This gold is found in the outwash of the earlier...country had warmed up so vegeta • tion, including cedars, beach, and other woody plants grew, driving their...balls are also found which may be berries from cedars as they have been mPntioned by botanists as occurring...The Barnsdall Refining Con,pany have a plant and mine near Seneca, Missouri. Going north to Pleasanton |  | | Journal (article/letter/editorial) | | inclusions of apatite and zircon and a few grains of magnetite are present. The effects of dynamo-metamorphism...apatite, zircon, epidote and scattered grains of magnetite. Microperthitic structures are common to the potash...of apatite and zircon and scattered grains of magnetite, with some secondary muscovite, chlorite Io6... slightly pleochroic few scattered grains of magnetite are observed. An outcrop, from which some rock...partially covered, in places, with a thick growth of cedars (see Fig. 4). An even granular medium coarse-grained |  | | Journal (article/letter/editorial) | | partitioned into brucite and chrysotile and less into magnetite in the experiments conducted at higher pH. In...The Opx used in the experiments was from Bamble, Norway [35]. The prepared Opx reactant included less than...contained 0.0001% and approximately 0.14 wt% magnetite, respectively. Chemical compositions of the reactant...detection; Srp, serpentine; Brc, brucite; Mgt, magnetite. Mg# srp. 93 (0.9) brc. 78 (1) Wt% mgt. 1.6...mounted on aluminium stubs. Bright spots are magnetite. (a) Thick mat of fibrous chrysotile with embedded |  | | Journal (article/letter/editorial) | | consists chiefly of small junipers and stunted cedars. Drainage.-The Boulder River is the most important...and ore was hauled by wagon from the Independence mine in Haystack Basin. The camp was soon deserted, but... biotite, and muscovite, with hornblende and magnetite as accessory minerals. Like minerals are arranged...andesine, green hornblende, quartz, orthoclase, magnetite, and biotite. Calcite and serpentine are present... green hornblende, pyroxene, orthoclase, and magnetite. The andesite-dacite stocks are younger than the |  | | Journal (issue) | | high-magnesium and low-potassium soil overgrown with cedars, scrub pine, and brambles. Within the six sub-groups...concentrations of radioactive zircon, rutile, or magnetite. Graphite schist is rare and has only been identified...water in the underground mines and also the effect mine-water d ischarge has upon the Lackawanna River. |  | | Journal (article/letter/editorial) | | observed in the quartz porphyries (quartz-epidote-magnetite veinlets and hematite geodes), is confined. Morphologically...meteoritic material was carried out with the aid of a mine detector, an M-23 magnetometer, a concentrate flume...after its formation. In the crater stand charred cedars, the age of which from the annular rings is about |  | | Report (issue) | | . . . . . 3 Section 1: Hull - Maniwaki Cliff Mine . • . . . . . . . . . . . . . . . . • . . . . .... . . . . . . . . . . . . . . . . . . Pinks Lake mine . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . • . • . . . . . . . . Wallingford Mine. . . . • . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . Laurentide Mine . . . . . . . . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . Fortin and Gravelle Mine . . . . . . . . . . . . . . . . . . . . . . . . |  | Etiope, G., Tsikouras, B., Kordella, S., Ifandi, E., Christodoulou, D., Papatheodorou, G. (2013) Methane flux and origin in the Othrys ophiolite hyperalkaline springs, Greece. Chemical Geology, 347. 161-174 doi:10.1016/j.chemgeo.2013.04.003 | Journal (article/letter/editorial) | | reactions supported by metal catalysts, such as magnetite (Fe3O4), chromite (FeCr2O4) and awaruite (Ni3Fe)...at low temperatures (30–70 °C), catalyzed by magnetite and chromite, but they did not evaluate possible...values, was reported for the Leka ophiolite in Norway (Okland et al., 2012). Gas can be released to the...as well as variable percentages of actinolite, magnetite and scarce talc, brucite, chlorite and calcite...lherzolites, related to breakdown of diopside. Magnetite frequently rims spinel grains or occurs along |  | | Journal (issue) | | mineralogy is increasing tremendously. Rocks and Mine rals has Among some of the many questions submitted...What should that price be? Your guess is as good as mine. I have bought agate at . 10 per lb. and lost money...a grocery store. We found the remains of the old mine but all the minerals collected were a few pieces...danburite. The oldest man in the neighborhood said the mine had been opened up for nickel. I once saw a specimen...limonite mine at Clove Valley, N. Y., noted for gibbsite. We were surprised to find that the mine which |  | | Journal (issue) | | If it is a mine, the quality of the supply as well as the quantity may increase as the mine deepens. If...scarcely pull us, through the stunted pinons and cedars a few miles, and we were in sight of the desert...class ore are in this mine. THE MINERAL OOLLECTOR . 127 AN ISLAND OF MAGNETITE . A MOST phenomenal...peculiarities, consisting as it does almost entirely of magnetite, aud its magnetic influence is not only very well |
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