 | | Journal (article/letter/editorial) | | (1998) 8 Meteoritical Society, 1998. Printed in USA. Bulk and stable isotopic compositions of carbonate...Institute, 3600 Bay Area Boulevard, Houston, Texas 77058 USA 2Drawer E, Savannah River Ecology Laboratory, University...University of Georgia, Aiken, South Carolina 29802 USA *Correspondence author's e-mail address: treiman@lpi...outward by decreasing Ca content to a broad zone of magnesite(ss) that is siderite-rich on its interior (molar...content of the magnesite(ss) decreases continuously outward and approaches end-member magnesite composition |  | | Journal (article/letter/editorial) | | minerals Article The Kilmar Magnesite Deposits: Evaporitic Metasediments in the Grenville Supergroup...Geology, Colgate University, Hamilton, NY 13346, USA; gary.eppich@gmail.com * Correspondence: wpeck@colgate... Abstract: Mesoproterozoic magnesite deposits are found associated with dolomitic marble...mineralogical data for a marine evaporitic origin. The magnesite ore zone has δ18 O(Mag) = 25.5 ± 0.4% (VSMOW)...Adirondack Lowlands (New York, NY, USA). The identification of the Kilmar magnesite deposits as evaporitic |  | | Journal (article/letter/editorial) | | 13617, USA; robinson@mtu.edu New York State Museum, 3140 CEC, Madison Avenue, Albany, NY 12230, USA; marian...mineral-forming environments, some of which appear unique. New discoveries and rediscovery of historic localities...Grenville Province in southern Ontario, Quebec, New York, and New Jersey, utilizing a variety of data ranging...Much more will be elucidated, as new localities are discovered and new techniques are employed to study...American #1 talc mine in Balmat, St. Lawrence County, New York. The tourmalines investigated contain up to 21 |  | | Report (issue) | | WESTERN AUSTRALIA 1 TALC, PYROPHYLLITE AND MAGNESITE IN WESTERN AUSTRALIA FRONTISPIECE: COVER: Talc...ABEYSINGHE, P. B., 1996, Talc, pyrophyllite and magnesite in Western Australia: Western Australia Geological...3. Abeysinghe, P. B. Talc, pyrophyllite and magnesite in Western Australia Bibliography. Includes Index... 2. 3. I. I/. Asbestos - Western Australia. Magnesite - Western Australia Pyrophyllite - Western Australia.................................................. USA ................................................ |  | | Journal (article/letter/editorial) | | northwestern Pakistan, occurring in talc-magnesite and quartz-magnesite assemblages, have been investigated...the carbon and oxygen isotopic composition of magnesite, locally associated with emerald mineralization...Textural relations (i.e. thin microscopic veins of magnesite cutting across matrix serpentine) suggest that...localities, such as the Cobb-Takaka River district, New Zealand (Wellman 1943), the Middle River Range in...and (c) nature of the associated gangue (mainly magnesite and talc) is soft which ensures that less cost |  | GOLDEN, D. C., MING, D. W., SCHWANDT, C. S., MORRIS, R. V., YANG, S. V., LOFGREN, G. E. (2000) An experimental study on kinetically-driven precipitation of calcium-magnesium-iron carbonates from solution: Implications for the low-temperature formation of carbonates in martian meteorite Allan Hills 84001. Meteoritics & Planetary Science, 35 (3) 457-465 doi:10.1111/j.1945-5100.2000.tb01428.x | Journal (article/letter/editorial) | | 5 (2000) 0Meteoritical Society, 2000. Printed in USA. An experimental study on kinetically-driven precipitation... Texas 77058, USA *Mail Code SN2, NASA Johnson Space Center, Houston, Texas 77058, USA 3Lockheed Martin...Code C23,2400 NASA Road 1, Houston, Texas 77058, USA *Correspondence author's e-mail address: douglas...bands with an intervening layer of nearly pure magnesite. The origin of carbonate minerals in ALH 84001...Ankerite-siderite, magnetite Ankerite, magnesite Ankerite, magnesite Ankerite, magnesite Amorphous Fe-rich carbonate |  | | Book | | Sulfur Talc 260 265 274 Vermiculite 145 Magnesite & magnesia Manganese minerals 255 Titanium &...resin and maximizes dispersion. 3. Development of new applications. The market for fillers in rubber, paper...a source of magnesia is eclipsing the mineral magnesite in some areas; the trona mine rather than the...for example, are almost entirely derived from the USA and Tur- key, a situation too narrowly based comfort...Minerals International Congress took place in Boston, USA, in April 1988. 4| a) envi at wererieryre' humus |  | | Journal (article/letter/editorial) | | Institute, 3600 Bay Area Boulevard, Houston, TX 77058, USA Physics of Geological Processes, Department of Physics...NASA Ames Research Center, Mo¡ett Field, CA 94035, USA d Bilby Research Center, Department of Geology, Northern...Northern Arizona University, Flagsta¡, AZ 86011-6013, USA b Received 29 May 2002; received in revised form...ALH84001; Spitsbergen; hydrothermal; siderite; magnesite; ankerite 1. Introduction * Corresponding author...Dessert Research, 4911 Hornet, Prescott, AZ 86301, USA. The Martian meteorite ALH84001, an orthopyroxenite |  | | Journal (article/letter/editorial) | | 4100 National Parks Highway, Carlsbad, NM 88220, USA a r t i c l e i n f o Article history: Received...natural hydromagnesite (5424) from Staten Island, New York, is 58.39 ± 0.40 (2σ) in logarithmic units at...the natural hydromagnesite from Staten Island, New York, from Gabbs, Nevada, and for the synthetic hydromagnesite...time before hydromagnesite (5424) converts to magnesite (MgCO3). Consequently, the thermodynamic properties...the natural hydromagnesite from Staten Island, New York, purchased from Ward's Natural Science Company |  | | Journal (article/letter/editorial) | | ORIGINAL PAPER Grain growth kinetics of dolomite, magnesite and calcite: a comparative study N. E. Davis •...growth of stoichiometric dolomite [CaMg(CO3)2] and magnesite (MgCO3) have been measured at temperatures T of...dolomite is much slower than the growth rates of magnesite or calcite; assuming normal grain growth and n...10-5 lm3/s) at T = 800°C is less than that for magnesite by a factor of *30 and less than that for calcite...A&M University, College Station, TX 77843-3115, USA e-mail: newman@geo.tamu.edu Present Address: N. E |  | | Journal (article/letter/editorial) | | (1998) 0 Meteoritical Society, 1998. Printed in USA. The history of Allan Hills 84001 revised: Multiple...Bay Area Boulevard, Houston, Texas 77058-1 113, USA Author's e-mail address: treiman@lpi.jsc.nasa.gov...intense scrutiny of ALH 84001 has uncovered many new observations on its geologic history, many of which...any of the proposed geologic histories. From this new and often contradictory data, I have tried to construct...interpreting possible evidence of biogenic activity. Each new investigation of ALH 84001 yields information on |  | | Journal (article/letter/editorial) | | 31-38 (2000) 0Meteoritical Society, 2000 Printed in USA. Experimental hydrothermal alteration of a martian... University of Idaho, Moscow, Idaho 83844-3022, USA *Correspondence author's e-mail address: Ibaker@uidaho...biotic activity (McKay et al., 1996) has focused new attention on the likelihood of past hydrothermal...minerals, possibly including calcite, siderite, or magnesite, were expected to precipitate under the experimental...Carbonate minerals, possibly including calcite, magnesite, siderite, ankerite, and rhodochrosite, formed |  | Kadīr, Selahattīn, Erkoyun, Hülya, Eren, Muhsīn, Huggett, Jennifer, Önalgil, Nergīs (2016) Mineralogy, Geochemistry, and Genesis of Sepiolite and Palygorskite in Neogene Lacustrine Sediments Eskīşehīr Province, West Central Anatolia, Turkey. Clays and Clay Minerals, 64 (2) 145-166 doi:10.1346/ccmn.2016.0640206 | Journal (article/letter/editorial) | | sepiolite nodules (meerschaum), which are former magnesite gravels, are observed in the Upper Miocene reddish-brown...sparsely associated with dolomite and accessory magnesite, quartz, feldspar, and amphibole. Sepiolite and...nodules suggest formation through replacement of magnesite gravels at shallow burial in an alkaline environment...sepiolite within the fluvial channel sediments. The new data in the present study will be used to discuss...which have economic potential. Furthermore, these new data and interpretations will guide future exploration |  | Wonyen, Darius, Kromah, Varney, Gibson, Borbor, Nah, Solomon, Chelgani, Saeed (2018) A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite) Minerals, 8 (8) 354 doi:10.3390/min8080354 | Journal (article/letter/editorial) | | Flotation Separation of Mg Carbonates (Dolomite and Magnesite) Darius G. Wonyen 1,† , Varney Kromah 1,† , Borbor...Science, University of Michigan, Ann Arbor, MI 48109, USA Correspondence: saeed.chelgani@gmail.com; Tel.: +1-41-6830-9356...magnesium (Mg) carbonates such as dolomite and magnesite. Flotation separation of Mg carbonates from their...AVMs by froth flotation. Keywords: dolomite; magnesite; flotation; bio-flotation 1. Introduction Magnesium...processing [1,2]. Dolomite (CaMg(CO3 )2 ) and magnesite (MgCO3 ) are the main Mg carbonates [3–8] that |  | | Journal (article/letter/editorial) | | calcite and dolomite to produce a deposition of magnesite. This phenomenon is congruent to the observed...decrease in 6180. Furthermore, a purely sedimentary magnesite should be heavier in 61so than the dolomite typically...Chay6 d'Albissin et al. on the origin of the magnesite ore deposits do not invalidate our hypothesis...not respond to the particular features of the magnesite deposit of Eugui. Kralik, M. and Hoefs, J.: Die...8:69-134 (1981) Quemeneur, M.J.: Les gisements de magnesite du Pays Basque: Cadre g~ologique et s~dimentologique; |  | | Journal (article/letter/editorial) | | Geophysical Sciences, University of Chicago, Ill., 60637, USA Received 18 June 1973 The melting curves of CaCO3...of calcite and magnesite are 1610°C and 1585 oC, respectively. New data for the magnesite dissociation...magneslte penclase + hquld+ vapor near 26 kb-1550 C. New data are also presented for the calcite-aragonite...1100°C. At pressures above 36-50 kb, calcite and magnesite melt at temperatures lower than the solidus of...2. Experimental results Synthetic calcite and magnesite in sealed platinum capsules were reacted in piston-cylinder |  | | Journal (article/letter/editorial) | | crystals, and as fiber bundles (where dolomite @ magnesite is absent). The stable-isotope values and some...Southern Methodist University (SMU), Dallas, Texas (USA). Powdered calcrete samples (510 mg) were reacted...chl: chlorite, ill: illite, dol: dolomite, mag: magnesite, cal: calcite, qtz: quartz, fds: feldspar, pyx:...samples and is associated locally with accessory magnesite and with abundant palygorskite in powdery and...dolocrete. pal: palygorskite, dol: dolomite, mag: magnesite, qtz: quartz, and fds: feldspar. 212 Kadir |  | | Journal (article/letter/editorial) | | discovery of the Borobia world-class stratiform magnesite deposit (Soria, Spain): a preliminary report Received:...Springer-Verlag 2001 Abstract A new world-class stratiform magnesite deposit has been recently discovered...mineralization consists of a 25±45 m massive to banded magnesite layer sandwiched in between a Lower Cambrian carbonate...Borobia deposit. Keywords Borobia á Dolomite á Magnesite á Mining á Spain á Stratiform mineralization ...presence of a Mg-rich carbonate layer (mostly magnesite with minor dolomite) extending over several kilometres |  | Zhang, J., Martinez, I., Guyot, F., Gillet, P., Saxena, S. K. (1997) X-ray diffraction study of magnesite at high pressure and high temperature. Physics and Chemistry of Minerals, 24 (2) 122-130 doi:10.1007/s002690050025 | Journal (article/letter/editorial) | | Gillet S.K. Saxena X-ray diffraction study of magnesite at high pressure and high temperature Received...22, 1996 Abstract P – V – T measurements on magnesite MgCO3 have been carried out at high pressure and...investigated P – T range, thermal pressure for magnesite increases linearly with temperature and is pressure...Sciences, University of New York at Stony Brook, Stony Brook, NY 11794, USA P. Gillet Laboratoire de...for the first time in this compound. Using this new equation of state, thermodynamic calculations for |  | | Journal (article/letter/editorial) | | Sciences, University of Texas, Austin, TX 78713, USA Abstract. Mineral associations and compositions...Polymineralic assemblages include: pargasite-magnesite-dolomite-apatite-spinel; pargasite-dolomite-Ba...edenite-chlorite; and olivine-ilmenite-spinel. Magnesite and chlorite are present also as monomineralic...within the pyrope crystals are dolomite, calcite, magnesite, amphibole, titanoclinohumite, chlorite, Mg-ilmenite...inclusions repeatedly were repolished to expose new surfaces. Standards used for analysis include olivine |  | | Journal (article/letter/editorial) | | water and valuable minerals from AMD using the Magnesite Softening and Reverse Osmosis (MASRO) process...(OPEX) and capital expenditure (CAPEX) of the magnesite softening and reverse osmosis (MASRO) process...multi-meter (HANNA instrument, HI9828, Woonsocket, RI, USA). The morphological properties and elemental compositions...Carl Zeiss, Supplier: Carl Zeiss, Thornwood, New York, USA). Mineralogical composition was elucidated using...mine water treatment technology known as the Magnesite, Softening, and Reverse Osmosis (MASRO) process |  | | Journal (article/letter/editorial) | | Hexametaphosphate on the Flotation of Ultrafine Magnesite from Dolomite-Rich Desliming Tailings Duong Huu...Hexametaphosphate on the Flotation of Ultrafine Magnesite from Dolomite-Rich Desliming Tailings. Minerals...investigates the flotation beneficiation of ultrafine magnesite rich in dolomite from desliming, currently reported...froth analysis (DFA), (ii) the separation between magnesite and dolomite/calcite, and (iii) its effect on...beneficial impact on the flotation separation between magnesite and dolomite. However, there is a trade-off between |  | | Journal (article/letter/editorial) | | circumstances. Then it is not possible to classify the magnesite sedimentary sequence in only one of the classic...predominate in the Paleozoic. The size of the magnesite lenses sharply decreases in the Permo-Trias and...it into carbonates and organic matter. So the magnesite distribution reveals the atmospheric evolution... In conclusions, the genesis of this type of magnesite has been proved since 1985-1986. However, it is...al.: A contribution to the ore genesis of the magnesite deposit of Eugui, Navarra (Spain) F. Velasco 1 |  | | Journal (article/letter/editorial) | | Experimental determination of the solubility product of magnesite at 50 to 200 °C Pascale Bénézeth ⁎, Giuseppe D...online 30 April 2011 Editor: Dr. J. Fein Keywords: Magnesite solubility product Thermodynamic properties Stability...Stability a b s t r a c t Accurate knowledge of magnesite thermodynamic properties over a wide range of...carbonates. In this study, the solubility of synthetic magnesite was investigated from 50 to 200 °C in 0.1 mol...calculation of the thermodynamic properties of magnesite. Of all the temperature functions tested, the |  | | Journal (article/letter/editorial) | | Meteoritics 30, 294-302 (J 995) 1995. Printed in USA o Meteoritical Society, A petrographic history...3600 Bay Area Blvd., Houston, Texas 77058-1113, USA (Received 1994 October 28; accepted in revised farm...contains preterrestrial alteration materials of magnesite-siderite-ankerite carbonates and pyrite, an assemblage...grading outward to ferroan magnesite (bremmerite) and thence to magnesite; an Ferich zone (bright in...in BSE imagery); a second magnesite zone; and a second Fe-rich zone (Fig. 4; Fig. 1 ofMittlefehldt, 1994a) |
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