 | 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) | | minerals Article Origin of Talc and Fe-Ti-V Mineralization in the Kletno Deposit (the Śnieżnik Massif...ppm V in bulk rock) and ornamental- to gem-quality talc prospect at the southwest margin of this deposit...schists, which, along with talc, envelopes a tectonic slice of serpentinite. Hornblendites are interpreted...gabbros and formation of the dolomite veins, whereas talc formed due to Si-rich fluids, possibly derived from...intrusion, interaction with serpentinite, or due to the metasomatism of the serpentinite–gabbro assemblage. Moreover |  | Barra, Fernando, Gervilla, Fernando, Hernández, Elkin, Reich, Martin, Padrón-Navarta, José Alberto, González-Jiménez, José Maria (2014) Alteration patterns of chromian spinels from La Cabaña peridotite, south-central Chile. Mineralogy and Petrology, 108 (6) 819-836 doi:10.1007/s00710-014-0335-5 | Journal (article/letter/editorial) | | d grains with a porous or spongy texture in serpentinite, whereas in Centinela Bajo Cr-spinel is present...Centinela Bajo (Fig. 2). Lavanderos is the only serpentinite body in Centinela Alto where Cr-spinel is significant...significant. Here, the serpentinite outcrop is only a few meters wide but extends for more than 200 m...fault-controlled emplacement for the smaller Lavanderos serpentinite and diapiric emplacement for the large (6×3...(<4 cm) tremolite crystals, Mg-rich chlorite, and talc (Höfer et al. 2001). The Centinela Bajo body has |  | | Report (issue) | | March 1951 TALC INVESTIGATIONS IN VERM10NT PRELIMINARY REPORT By A. H. Chidester, M.P. Billings and...• . . • . . • . . . . • • • • • • • . 1 Uses of talc ...••....•••••• ~ . • • • • . • • • • • • • • •...• . • • . . • • 3 Geographic distribution of the talc deposits •.......•..•••••...•••.•..•.• 3 Geology-........ 7 Talc reserve~. • • • . . . • . . . • • . . . • . . • . . • • • • • • • • . • 8 Talc deposits......••..•.. ~ .•.•.•... 14 The Montgomery Center talc Prospect locality 5 •..••......•.••..•...•...•• |  | | Journal (article/letter/editorial) | | chrysotile content is strongly complicated by typical serpentinite textures, consisting of fineto-ultrafine intergrowths...requirements. Keywords: Chrysotile, asbestos, massive serpentinite, thermal analysis, quantitative determination...spinels, forsterite, pyroxenes, amphiboles, chlorite, talc, and brucite. Depending on the metamorphic and tectonic...vitic@unisi.it 0003-004X/11/0007–1003$05.00/DOI: 10.2138/am.2011.3734 similar chemical compositions, usually...: DTA QUANTITATIVE ANALYSIS OF CHRYSOTILE IN SERPENTINITE in cross or slip monomineralic veins, fractures |  | Swayze, Gregg A., Higgins, Chris T., Clinkenbeard, John P., Kokaly, Raymond F., Clark, Roger N., Meeker, Gregory P., Sutley, Stephen J. (2004) Preliminary report on using imaging spectroscopy to map ultramafic rocks, serpentinites, and tremolite-actinolite-bearing rocks in California. Open-File Report 2004-1304. US Geological Survey doi:10.3133/ofr20041304 | Report (issue) | | in El Dorado and Plumas Counties that contain serpentinite and ultramafic rocks as part of an experiment...exposures of serpentine and tremolite-actinolite/talc in areas with up to 70 percent vegetation cover...may be more serpentine and tremolite-actinolite/talc present than is shown on the mineral maps. It also...tremolite-actinolite from talc using AVIRIS. Serpentine has been detected outside of known serpentinite outcrop areas, mostly...predominantly, but not exclusively, found in serpentinite and ultramafic rocks, which are common in the |  | | Journal (article/letter/editorial) | | NW-SO streichenden Anomalien bestiitigen. Die Serpentinite stellen Teile eines zerscherten Ophiolithkomplexes...isolated anomalies represents a polyphase deformed serpentinite emplacement overlain by coarse grained eclogitic...system. Regional structural-lithological domains (see Fig. 2) within the metamorphic complex in the area...characterized by abundant tectonically emplaced serpentinite bodies. 3.- a southern zone rich in metavolcanics...in the last two domains. They indicate that serpentinite, metagabbro, metabasalt and to a minor extent |  | | Journal (article/letter/editorial) | | com/loi/tigr20 Jade (Nephrite and Jadeitite) and Serpentinite: Metasomatic Connections a G. E. Harlow & S...Sorensen (2005) Jade (Nephrite and Jadeitite) and Serpentinite: Metasomatic Connections, International Geology...reserved. Jade (Nephrite and Jadeitite) and Serpentinite: Metasomatic Connections G. E. HARLOW1 American...Avenue, NW, P. O. Box 37012, NHB-119, Washington, District of Columbia 20013-7012 Abstract The lapidary...that are intimately connected with their host serpentinite bodies and convergent-margin petrotectonics |  | 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...of the protolith. The pervasive alteration of serpentinite was accompanied by the formation of a network...discontinuities. This two-steps reaction (dissolution of serpentinite followed by carbonate precipitation outside...widespread silicate rocks (i.e., peridotite, serpentinite, basalt) that trap safely CO2 over geological...address: c.boschi@igg.cnr.it (C. Boschi). 0009-2541/$ – see front matter © 2009 Elsevier B.V. All rights reserved |  | | Journal (article/letter/editorial) | | tandfonline.com/loi/tigr20 Contrasting Settings of Serpentinite Bodies, San Francisco Bay Area, California:...John Wakabayashi (2004) Contrasting Settings of Serpentinite Bodies, San Francisco Bay Area, California:...All rights reserved. Contrasting Settings of Serpentinite Bodies, San Francisco Bay Area, California:...December 2014 Although the best-known outcrops of serpentinite in the California Coast Ranges are part of the...the Coast Range ophiolite (CRO), significant serpentinite bodies crop out within the Franciscan subduction |  | | Book | | Geology of Unst and Fetlar in Shetland The district described in this memoir is covered by Sheet 131...publications of the Survey dealing with this district and adjoining district. Books Memoirs Geology of Yell and...Exploration 138 Two Outline of the geology of the district 4 Basement to the Shetland Ophiolite-complex 4...FIGURES Physiographical and locality map of the district 2 Simplified map of the Valla Field and Lamb Hoga...3 Tectonic blocks forming the Unst and Fetlar district 6 4 Diagrammatic section through the Shetland |  | | Journal (article/letter/editorial) | | The geology of the Bou Azzer-El Graara cobalt district has been examined thoroughly by Choubert [17]...cutting its structure into a number of blocks. The district lies on the northern edge of the African platform...granitoid intrusions; 7) flysch and molasse; 8) serpentinite and as sociated greenstones: 9) gneisses and...clearly mani fested in the Bou Azzer-El Graara district. Here, over a substantial area around the whole...brecciated, almost vertical contact between the serpentinite massif and quartz diorite. Antigorite 308 G |  | | Journal (article/letter/editorial) | | bucher@uni-freiburg.de) ABSTRACT The Zermatt-Saas serpentinite complex is an integral member of the Penninic...lithosphere of the Tethys. Metamorphic textures of the serpentinite preserve the complex mineralogical evolution...km depth. Key words: antigorite; ophiolite; serpentinite; textures; Zermatt-Saas. INTRODUCTION Eclogite...composition and field appearance, and the exposed serpentinite area in the Swiss part of the complex is on...metamorphism of mafic dykes in the serpentinites (see below) and Pfeifer (1979) and Pfeifer et al. (1989) | | | Report (issue) | | “Franciscan assemblage” including outcrops of serpentinite, basalt, limestone, ribbon chert, graywacke...reservoir dams of the Santa Clara Valley Water District. In addition, stops include examination of an...this report. Both the Santa Clara Valley Water District and the Santa Clara County Parks and Recreation...of this exit. Easily-accessible exposures of serpentinite, layered-chert beds in chevron folds, and Silver...several miles on US Highway 101, blue-green serpentinite exposures can be seen in the hills to the left |  | Hodel, F., Trindade, R.I.F., Macouin, M., Meira, V.T., Dantas, E.L., Paixão, M.A.P., Rospabé, M., Castro, M.P., Queiroga, G.N., Alkmim, A.R., Lana, C.C. (2019) A Neoproterozoic hyper-extended margin associated with Rodinia's demise and Gondwana's build-up: The Araguaia Belt, central Brazil. Gondwana Research, 66. 43-62 doi:10.1016/j.gr.2018.08.010 | Journal (article/letter/editorial) | | along hyper-extended margins during rifting events (see a RI review about hyper-extended margins and associated...schist with intercalations of talc schist, talc-actinolite schist, serpentinite, metabasite and phyllite (Hasui...silexite (Fig. 1b) (see cross section of the unit in Paixão et al., 2008 and see also Paixão, 2009)....ultramafic units (alteration profiles of the serpentinite under a tropical climate). Samples were collected...granites to the west and Cantão granite to the east, see Fig. 1a). These A-type granitic bodies are interpreted |  | | Report (issue) | | Wanamu-Blue Mountains area is situated in the Northwest District of Guyana, about 110 miles northwest of Georgetown...Lletasomatic reaction zones have developed around the serpentinite bodies at their contacts with country rock....these samples, in addition to representative serpentinite and laterite samples, were analyzed by rapid...nickel has been lost during weathering of the serpentinite. In contrast, cobalt has been considerably enriched...geochemical anomalies tend to coincide with the serpentinite bodies and closely follow their trend across |  | | Report (issue) | | reflects the strong relative magnetization of serpentinite bodies and shows similar structural trends.... The contrast in magnetic expression of serpentinite and hornblende schist, the other major rock unit...delineation of serpentinite masses beneath areas of shallow alluvial cover. Serpentinite is inferred to...southeast of the ancient workings. Areas of serpentinite outcrop are characterized by a pattern of intense...(1981), supported by drilling data, that the serpentinite is essentially rootless, that is, that it overlies |  | Schwarzenbach, Esther M., Lang, Susan Q., Früh-Green, Gretchen L., Lilley, Marvin D., Bernasconi, Stefano M., Méhay, Sabine (2013) Sources and cycling of carbon in continental, serpentinite-hosted alkaline springs in the Voltri Massif, Italy. Lithos, 177. 226-244 doi:10.1016/j.lithos.2013.07.009 | Journal (article/letter/editorial) | | Sources and cycling of carbon in continental, serpentinite-hosted alkaline springs in the Voltri Massif...Sampling and Analysis, Dubai, UAE. 0024-4937/$ – see front matter © 2013 Elsevier B.V. All rights reserved...serpentinization processes and the carbonation of serpentinite (Andreani et al., 2008; Boschi et al., 2009;...that the Ca–OH waters form by dissolution of serpentinite and concomitant carbonate precipitation in a...when the river floods over the carbonate deposits (see Fig. 2K and L). Spring LER20 flows at around 4 ml/s |  | Hodel, F., Macouin, M., Triantafyllou, A., Carlut, J., Berger, J., Rousse, S., Ennih, N., Trindade, R.I.F. (2017) Unusual massive magnetite veins and highly altered Cr-spinels as relics of a Cl-rich acidic hydrothermal event in Neoproterozoic serpentinites (Bou Azzer ophiolite, Anti-Atlas, Morocco) Precambrian Research, 300. 151-167 doi:10.1016/j.precamres.2017.08.005 | Journal (article/letter/editorial) | | produced an intense magnetite leaching in the host serpentinite and an advanced Cr-spinels alteration to ferritchromite...Neoproterozoic seafloor. Keywords: Neoproterozoic, Serpentinite, Hydrothermalism, Magnetite, Cr-Spinel, Ophiolite...Ophiolite. 1. Introduction Precambrian ophiolites (see a compilation in Furnes et al., 2015) are the only...dunite lenses and chromite pods. The largest serpentinite outcrop is located next to the Aït Ahmane locality...serpentine variety and accessory minerals. Every serpentinite sample was powdered and scanned from 2 to 80 |  | | Report (issue) | | Quartzite....................................... Serpentinite, marble, and metabasalt............ Ultramafic-carbonate...Metabasalt, meta-andesite, carbonate rock, and serpentinite......................... Sandstone, conglomerate.................. Metaquartzose sandstone and serpentinite... Metabasalt.................................Amphibolite..................................... Serpentinite, and metavolcanic and carbonate rocks.........from: metasiltstone and carbonate rocks; and serpentinite, marble, and metabasalt.... 8 3. 4. 5. Estimated |  | | Report (edition) | | ................. 268 Chapter 38 Serpentine and talc 269 Serpentine group ............................................................... 270 xiv Talc ............................................................................................. 271 Talc in Western Australia................................................................... 278 Minor talc deposits .........................................Cabochons of amazonite from Melville in the Yalgoo district ............................................. |  | | Report (edition) | | .... 302 Chapter 36 Serpentine and talc 303 Serpentine and talc ................................................................................ 306 Talc properties .................................................................................. 306 Talc in Western Australia................................................................... 312 Minor talc deposits..........................................Cabochons of amazonite from Melville in the Yalgoo district.............................................. |  | | Journal (article/letter/editorial) | | ideal ophiolite complex, such as peridotite/serpentinite, gabbro, plagiogranite, dolorite, pillow basalt...pump=pumpellyite; smc=smectite; sph=sphene; tc = talc; ze = zeolite. denced by the unmetamorphosed enclosing...analyzed for their chemical compositions by microprobe (see Appendices A and B, respectively). All plagioclase...falls into the category of actinolitic hornblende (see Appendix A). The hornblendite was also cut by prehnite...ofplagioclase and opaques. Serpentinization products include talc, anthopyllite, chlorite, antigorite, lizardite, |  | | Journal (article/letter/editorial) | | ac.uk (D. Stephenson). 1 Deceased. 0016-7878/$ – see front matter ß 2012 Natural Environment Research...radiometric dating. For general summaries of the geology see Mykura (1976) and Flinn (1985). The Walls Boundary...overlies an imbricate zone, containing some serpentinite that was termed a tectonic mélange by Flinn...Permeation Belt, which extends the length of Shetland (see the Scalloway GCR site report). The Clift Hills Group...phyllitic chloritoid pelites and metalimestones (see the Hawks Ness and Cunningsburgh GCR site reports) |  | | Report (issue) | | occur in the Zambezi Valley and in the Chipinge District, and other less severe movements have been recorded...of fossiliferous sediits occur, as in the Gweru District, the fossil surface is designated •Karoo, although...marked along the western border. [n the Hwange District, the basal contact of the Karoo System on the...workers have located tillites both in surface outcrop and in borehole cores farther east. Bond (1970)... whereas the higher ones exhibit silicified serpentinite on the Great Dyke (Wiles, 1957), indicating |  | | Journal (article/letter/editorial) | | subduction-zone metasomatism: evidence from a jadeitite-serpentinite contact, Guatemala 1938-2839 Geology Review...July 2009) Jadeitite is a rare constituent of serpentinite-matrix mélange bodies from certain subduction...with serpentinite host rocks and serpentinizing fluids were largely unknown, because serpentinite-to-jadeitite...host serpentinite. An apparent transition zone between the former jadeitite and nearby serpentinite exposed...four texturally distinct rock types of differing outcrop colours, composed of albitites and meta-ultramafic |
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