 | Chen, Yi-Xiang, Demény, Attila, Schertl, Hans-Peter, Zheng, Yong-Fei, Huang, Fang, Zhou, Kun, Jin, Qi-Zhen, Xia, Xiao-Ping (2020) Tracing subduction zone fluids with distinct Mg isotope compositions: Insights from high-pressure metasomatic rocks (leucophyllites) from the Eastern Alps. Geochimica et Cosmochimica Acta, 271. 154-178 doi:10.1016/j.gca.2019.12.025 | Journal (article/letter/editorial) | | leucophyllite formation. Two leucophyllites in Austria exhibit higher 26Mg values of 0.05 to 0.09‰ compared...fluid derived from dehydration of talc-rich serpentinite. This is for the first time to find subduction...originated from dehydration of the sediment-serpentinite mélange at the slab-mantle interface. The fluids... and contains former greenschist-metagabbro-serpentinite complexes (Fig. 1a; Koller and Pahr, 1980; Demény...Talc and ophicarbonate (limestone, Mg-calcite and dolomite) also occur in these complexes (Demény et al. |  | | Journal (article/letter/editorial) | | hydrated Mg-carbonate-hydroxide assemblage of serpentinite fissures in Hrubšice, western Moravia (Czech...de mineralization was found in the Hrubšice serpentinite body, Moravian Moldanubicum. It is formed by... coalingite), followed by aragonite, brucite, dolomite and calcite. Two main stages of crystallization...The youngest minerals of fissures are calcite, dolomite and aragonite. Mineral assemblages have formed...coalingite, fissure minerals, Raman spectrum, serpentinite, Moldanubicum, Bohemian Massif 1. Introduction |  | Oskierski, Hans C., Bailey, Judy G., Kennedy, Eric M., Jacobsen, Geraldine, Ashley, Paul M., Dlugogorski, Bogdan Z. (2013) Formation of weathering-derived magnesite deposits in the New England Orogen, New South Wales, Australia: Implications from mineralogy, geochemistry and genesis of the Attunga magnesite deposit. Mineralium Deposita, 48 (4) 525-541 doi:10.1007/s00126-012-0440-5 | Journal (article/letter/editorial) | | weathered serpentinite host rock as well as soft powdery magnesite in pervasive serpentinite alteration...silica and serpentine relicts but does not contain dolomite or ferroan magnesite as observed for its Editorial...deposits of silica-carbonate rock in the Great Serpentinite Belt. Heavy δ18O values are compatible with...Keywords Nodular magnesite . New England Orogen . Serpentinite . Weathering . Mineral sequestration . Sources...(Pohl 1989), like the Attunga magnesite 526 quarry, New South Wales, Australia, have been exploited |  | | Report (issue) | | Glenelg, Ross shire and in the Innellan and .Toward district of Argyllshire, some of which have been worked...of talc and chlorite, with smaller amounts of dolomite and other mi.nerals. Pyrophyllite a hydrous aluminium...Norwegian Talc (UK) Limited. Unst talc (Queyhouse quarry); English China Clays Limited. Theoretical composition...tremolite - actinolite·, anthophyllite, magnesite, dolomite, calcite and quartz. Such remnant magnesium silicate...talc Weight per cent Talc Chlorite Mlgnesite Dolomite Tremolite Serpentine Quartz Opaques Percentage |  | | Report (edition) | | microscope by D.M. Lapham of a thin slice of serpentinite from Lancaster County showing olivine (blue-green...County, the Stillwell quarry in Lancaster County, and the Medusa Cement Company quarry in York County, are...Zircon Crystal 50 Diagramatic Sketch of Brinton Quarry Pegmatite 53 Geologic Cross-Section of West ...Glendale Area 84 of Deweylite after Dolomite, Ceclar Hill Quarry 89 _ Limonite Pseudomorphs from...permission from the owners of the land, or from the quarry and mine operators, before entering to collect |  | Oskierski, Hans C., Beinlich, Andreas, Mavromatis, Vasileios, Altarawneh, Mohammednoor, Dlugogorski, Bogdan Z. (2019) Mg isotope fractionation during continental weathering and low temperature carbonation of ultramafic rocks. Geochimica et Cosmochimica Acta, 262. 60-77 doi:10.1016/j.gca.2019.07.019 | Journal (article/letter/editorial) | | of Technology, Rechbauerstraße 12, 8010 Graz, Austria dGéosciences Environnement Toulouse (GET), CNRS...Attunga, New South Wales, show that weathering of serpentinite is accompanied by Mg loss and formation of secondary...significantly lower than those of magnesite and dolomite that formed by hydrothermal alteration of peridotite...context Samples were collected from the Great Serpentinite Belt (GSB), a dismembered, Early Cambrian ophiolite...dated at 267.2 ± 1.4 Ma (Cawood et al., 2011). Serpentinite detritus in adjacent Early Permian sandstones |  | | Report (volume) | | Serpentinite and Rodingite in the Hunting Hill Quarry, Montgomery County, Maryland By DAVID M. LARRABEE...BULLETIN 1283 Description of rocks exposed in the quarry near the center of the Hunting Hill ultramafite...showing distribution of rocks in the Hunting Hill serpentinite pluton, Montgomery County, Md ____ In pocket...pocket 2. Geologic map of the Hunting Hill serpentinite quarry __ In pocket 1. Index map showing location...location of the Hunting Hill serpentinite pluton, Montgomery County, Md______________ 3 2. Photograph of the |  | | Report (edition) | | Crystal . . . . . . .. Diagra1natic Sketch of Brinton Quarry Pegmatite Graphic Granite Geologic Cross-Section...Pseudomorphs of Deweylite after Aragonite. Cedar Hill Quarry . . . . . . . Calcite Crystal Forms "Picrolite"...(f) z 500 Limestone 0 _J _J ~ ORDOVICIAN a Dolomite CAMBRIAN .,·...... Sandstone 600 r---------...permission from the owners of the land, or from the quarry and mine operators, before entering to collect...have been taken from topographic quadrangles. A quarry or mine symbol designates the exact mineral location |  | | Report (issue) | | ...........................................87 District of Columbia ....................................Geologic sketch map of the Inyo-Panamint talc district, California .........................32,33 6....the southern Death Valley-Kingston Range talc district, California ....................................Simplified geologic map of the Ruby Mountains talc district, Montana .......................................Simplified geologic map of the Allamoore talc district, Texas .........................62,63 11. Geologic |  | Deasy, G. F., Griess, P. R., Balazik, R. F., Burtnett, J. W. (1967) Atlas of Pennsylvania’s Mineral Resources - Supplement, Limestones and dolomites of Pennsylvania, in Atlas of Pennsylvania's Mineral Resources. Mineral Resource Report M50-1S, Pennsylvania Geological Survey. | Report (Issue volume) | | limestone and dolomite mines 3 Section Il-Crushed and broken limestone and dolomite (Quantity of products)...limestone and dolomite (Value of products) 19 41 Section IV-Crushed and broken limestone and dolomite (Average...active mines, 1962 .. 2. Types of active mines (quarry andjor underground) 3. Number of months that mines... Limestone and dolomite quarried, prepared, and shipped .. 15. Limestone and dolomite mined underground... Limestone and dolomite quarried and placed in stockpiles 17. Limestone and dolomite mined underground |  | | Report (Issue volume) | | mine and the chromite deposits of the State Line district follow at $5-7 million. The Phoenixville type...23 24 25 26 27 28 29 30 Bonneaughtown Teeter's quarry Gettysburg Hunterstown Near Heidlcrsburg Center...NE Pipersville 2. 7 mi. NE Pt. Pleasant Delaware quarry U mi. NE Pt. Pleasant Unnamed New Hope Ingham Spring...Buckingham Bushington Yardley Vanartsdalen's quarry Holland Finney's quarry 0? 0? V S D D M 40 40 M M 40,48...Creek mines (Kleim, Elizabeth) Knauertown Keystone Quarry (Cornog) Chester Springs graphite Phoenixville |  | García del Real, Pablo, Maher, Kate, Kluge, Tobias, Bird, Dennis K., Brown, Gordon E., John, Cédric M. (2016) Clumped-isotope thermometry of magnesium carbonates in ultramafic rocks. Geochimica et Cosmochimica Acta, 193. 222-250 doi:10.1016/j.gca.2016.08.003 | Journal (article/letter/editorial) | | magnesite mine), Austria (Kraubath locality), Turkey (Tutluca mine, Eskisßehir district) and Iran (Derakht-Senjed...clumped-isotope alteration temperatures of magnesite and dolomite between 326 and 490 °C, broadly consistent with...obducted segments of serpentinized peridotite and serpentinite suggests that carbonate mineralization postdates...cryptocrystalline magnesite from California (USA), Austria, Turkey and Iran, (2) nesquehonite (MgCO33H2O)...(Mg2(CO3)(OH)23H2O) from surface deposits in the peridotite-serpentinite belt of the California Coast Ranges; and (3) |  | Gil, Grzegorz, Gunia, Piotr, Barnes, Jaime D., Szymański, Michał, Jokubauskas, Petras, Kalbarczyk-Gil, Anna, Bagiński, Bogusław (2019) Origin of Talc and Fe-Ti-V Mineralization in the Kletno Deposit (the Śnieżnik Massif, SW Poland) Minerals, 10 (1) 13 doi:10.3390/min10010013 | Journal (article/letter/editorial) | | Fe-Ti-V mineralization is hosted in hornblendites, dolomite veins, and chlorite schists, which, along with...with talc, envelopes a tectonic slice of serpentinite. Hornblendites are interpreted as metamorphosed ferrogabbros...carbon isotope compositions of metabasites and dolomite veins (amphibole δ18 O values = 8.8–9.3%; carbonate...carbonation of the gabbros and formation of the dolomite veins, whereas talc formed due to Si-rich fluids...intrusion, interaction with serpentinite, or due to the metasomatism of the serpentinite–gabbro assemblage. Moreover |  | | Report (volume) | | varying proportions of magnesite, quartz, and dolomite, and its magnesia content ranges from about 22...near the map area include a narrow, 2^-milelong serpentinite on Mount Chopaka (13 miles west of Oroville...B______ Magnesite, massive, dolomitic, siliceous. Dolomite ranges from less than 5 percent to over 40 percent...D_____- Magnesite, massive, dolomitic, siliceous. Dolomite varies from trace to over 60 percent. Locally...magnesite in northern part to nonmagnesitic siliceous dolomite in southern part. Bed trends generally north-northeast |  | | | | chemical composition in minerals such as calcite, dolomite, and aragonite, or rocks such as limestone, dolostone...cuprite, rutile, cassiterite, calcite, aragonite, dolomite, siderite, rhodochrosite, malachite, azurite...(grey, blue), p. 112 gypsum (white), p. 124 dolomite (grey, pink), p. 280 diamond (colourless), p...270) sandstone (p. 272) conglomerate (p. 268) dolomite (p. 142) sandstone (p. 272) grained or fine-grained...Dark amphibole gneiss (p. 280) slate (p. 284) serpentinite (p. 298) 13 Geological Regions of Canada |  | | Journal (article/letter/editorial) | | to 2 m thick, lie in fresh dunite and brown serpentinite. Most magnesite veins in dunite are unbranched...strong. The minerals in the veins include magnesite,dolomite, chalcedony,quartz and calcite, depositedin that...lies betxveenthe magnesiteveins and the dunite. Dolomite, quartz, and chalcedonyin the magnesite veins...associated mafic rocksand Rock Units in the Vavdos District slicesof Paleozoicgneisses within the Vardar zone...oceanbasinduring Late Cretaceoustime. brown serpentinite (Fig. 3). Lesser lithological The easternpart |  | | Book | | oil reserves· Namely,a reaction of limestone or dolomite with hydrogen under high pressure and temperature...chrysoberyl. Leaching of SiOp from pegmatite in serpentinite gives rise to zeolites, carbonates and clay... sometimes containing dolomite lamellae (the rock is called sovite); dolomite (the rock is termed rauhaugite);...involves barite, witherite, Iceland spar· magnesite, dolomite, talc and asbest,and in the low-temp era ture...Phoephorit· Si l i e · GYPSUM ANHYDRITE HALITE DOLOMITE ETC FENCE (Eh-0) CALCITE ORGANIC MATTER He-maUte |  | | Journal (article/letter/editorial) | | consist mainly of talc and magnesite, or magnesite, dolomite, and talc together with minor amounts of antigorite...lizardite as the main constituent of many of the serpentinite samples studied. Lizardite generally forms large...show flamboyant extinction. S-69, Black Marble quarry. Crossed polars, • ~4o. b, top right, bundles of...n o c h r y s o t i l e m i x t u r e s ; a serpentinite s p e c i m e n f r o m W a d i Badia (S-Io8)...alteration o f original olivine. Magnesite and dolomite are the most a b u n d a n t carbonates. Veins |  | | Journal (article/letter/editorial) | | geochemistry of loveringite, 187 Cannington Park quarry, Somerset, djurleite, 172; durangite, 172; milarite... see EGGLETON (R. A.), 361 and M37 Cheesewring quarry, Linkinhorne, Cornwall, danburite, I7I Chernovite...iron-bearing melts, Pt-Fe alloys for, 271 Coombe Farm quarry, Henbury, Somerset, wulfenite, 298 Coon Creek,...GUPTA (D. R.), the Dhajala meteorite, 493 Dean quarry, The Lizard, Cornwall, djurlei'te, 172; analcime...talc-like mineral, 282 Dhajala, Surendranagar District, Gujarat, India, meteorite, 493 Diabantite, New |  | | Journal (article/letter/editorial) | | Poland have been studied. Magnetite-rich calcite-dolomite marbles have the highest total organic carbon...tonnes of gold were mined within the Zloty Stok district. In the early 1990s, extensive exploration and...economic potential of the whole Zloty Stok gold district. Geological setting The Zloty Stok Au–As deposit...Dolomitic marbles are enveloped with a black serpentinite crust that grades outwards into a green one...inorganic geochemistry of gold mineralisation sep: serpentinite; asp: arsenopyrite; cc: calcite; car: carbonates; |  | | Journal (article/letter/editorial) | | production of magnesite here, and now there is a quarry in which the conditions of occurrence of the magnesite...dunites, which do not contain magnesite. In the quarry, it is evident that argillaceous Miocene lacustrine...sediments rest unconformably on the surface of the serpentinite. Investigations, carried out by I. Lapčevič...reticulate magnesites, occurring in a cerolitized serpentinite. Along the periphery of the T e r tiary deposits...consist of magnesite veins among cerolitized serpentinite. In the inter-joint spaces, blocks of fresh |  | Boschi, C., Dini, A., Dallai, L., Ruggieri, G., Gianelli, G. (2009) Enhanced CO2-mineral sequestration by cyclic hydraulic fracturing and Si-rich fluid infiltration into serpentinites at Malentrata (Tuscany, Italy) Chemical Geology, 265 (1) 209-226 doi:10.1016/j.chemgeo.2009.03.016 | Journal (article/letter/editorial) | | Malentrata (Tuscany, Italy) were derived from serpentinite silicification– carbonation of the Ligurian ophiolite...dioxide into stable carbonates (e.g. magnesite, dolomite). Serpentinites at Malentrata were transformed...alteration of serpentinite was accompanied by the formation of a network of magnesite and dolomite veinlets...veinlets, and large magnesite–dolomite veins along major structures. Field observations, petrography and mineral...magnesite, ii) comb-textured Fe-rich magnesite and dolomite cementing the early brecciated magnesite vein |  | | Report (Issue volume) | | Shale Brick Corp. Fenati Brick Co., Inc. Midland Quarry, McQuiston Coal Co. Veon Mines, Ralph A. Veon,...mine and the chromite deposits of the State Line district follow at $5-7 million. The Phoenixville type...23 24 25 26 27 28 29 30 Bonneaughtown Teeter's quarry Gettysburg Hunterstown Near Heidlcrsburg Center...NE Pipersville 2. 7 mi. NE Pt. Pleasant Delaware quarry U mi. NE Pt. Pleasant Unnamed New Hope Ingham Spring...Buckingham Bushington Yardley Vanartsdalen's quarry Holland Finney's quarry 0? 0? V S D D M 40 40 M M 40,48 |  | | Report (edition) | | “old” Lime Bluff quarry, Muncy; right fibrous : tremolite, C. K. Williams quarry, Easton: bottom: calcite...oriented coatings of goethite, “old” Lime Bluff quarry, Muncy, (courtesy of Delbert L. Oswald) ADDITIONAL...edition of Mineral Collecting Cedar Hill in quarry where Dave had done IV much of his work PREFACE...permission from the owners of the land, from the quarry or mine operators before entering to collect. (Land...compilation. Finally, we acknowledge the many quarry and property owners who have aided the authors |  | | Journal (article/letter/editorial) | | association with vein serpentine (e.g. Trevassack quarry [SW 712 222]). Although not widely documented,...composition host mineral assemblages dominated by talc, dolomite and sepiolite (this study). In addition to massive...the relative chronology cannot be constrained. Dolomite is the most common fracture-hosted vein mineral...show crack-seal textures; numerous episodes of dolomite formation are apparent. Net veining is particularly...of quartz and calcite are associated with the dolomite mineralisation. Although sepiolite has previously |
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