 | | Report (chapter) | | Technologies de Lille, 59655-Villeneuve d’Ascq, France *Corresponding author (e-mail: jjalvaro@unizar...Hercynian (and/or Alpine) thrusts in the Ojos Negros quarry; biostratigraphical data after: (1) Gutiérrez-Marco...Lowermost karstic (breccia) infill of the Ojos Negros quarry (Sierra Menera massif) showing angular clasts of...part) embedded in a mixture of ferroan dolomite–sericite matrix, from the Noguera–Orihuela road, Tremedal...slide found on the eastern wall of the Ojos Negros quarry, Sierra Menera massif; scale bars 1 mm. Downloaded |  | Casas, Josep M., Castiñeiras, Pedro, Navidad, Marina, Liesa, Montserat, Carreras, Jordi (2010) New insights into the Late Ordovician magmatism in the Eastern Pyrenees: U–Pb SHRIMP zircon data from the Canigó massif. Gondwana Research, 17 (2) 317-324 doi:10.1016/j.gr.2009.10.006 | Journal (article/letter/editorial) | | abundant than plagioclase, which is altered to sericite. Matrix minerals are recrystallized quartz, biotite...Chaine hercynienne des Pyrénées Orientales. Bulletin Societé Géologique de France 7, 673–731. Ayora, C...Ordovicien dans la région de Pierrefitte (Hautes Pyrénées): rhyolites calco-alcalines et basaltes alcalins...Pyrenees and the Montagne Noire (France). Bulletin Societé Géologique de France 176, 269–282. Delaperrière...des gneiss de Casemi (Massif du Caigou, Pyrénées Orientales) par la méthode 324 J.M. Casas et al. |  | | Journal (article/letter/editorial) | | slice, the base consists of poorly orientated sericite showing little tendency to envelop the tourmaline...FIO. lB. Dravite-sericite-rock, showing parallel growths of dravite orientated sericite, x 8. set in...type (fig. 2) consists of a base of fine-grained sericite, in which patches of minutely fibrous, colourless...In the succeeding stage of alteration all the sericite is replaced by needles of dravite. The tourmaline...due probably to FIC~. 2. Dravite-sericite-rock, showing sericite (light) partially replaced by dravite |  | | Report (issue) | | ................................. 19 Quartz-sericite schist..................... 19 Chlorite-actinolite............................................ 129 Las Palmas-Santa Elena deposits ......................... 138 El Cairo quarry....................................... 140 Neira quarry.................................................... 164 La Solita-Las Brisas deposit...................... 164 Other...(An«Q to An fl Biotite 8 to 40 Muscovite or sericite 4 to 20 Chlorite (mostly after biotite) traces |  | | Journal (article/letter/editorial) | | zoning in epidote from rhyodacitic tuff, Bobae sericite deposit, southeastern Korea C. O. Choo, Taegu...zoning in epidote from rhyodacitic tuff, Bobae sericite deposit, southeastern Korea. – N. Jb. Miner. Abh...in the propylitic alteration zone of the Bobae sericite deposit, southeastern Korea, resulted from progressive...alteration processes. Key words: epidote, Bobae sericite deposit, compositional zoning, hydrothermal alteration...occurring in the propylitic alteration zone of a sericite deposit, southeastern Korea, and to provide insight |  | | Journal (article/letter/editorial) | | leucogranites ultimately transformed into quartz–sericite greisens), are the most remarkable features that...feldspars, and biotite broken down into aggregates of sericite–muscovite and anhedral hematite are characteristic...in euhedral to subhedral grains associated with sericite in late aggregates. Fluorite is also an interstitial...in quartz. Secondary phases are clay minerals, sericite, chlorite, and Fe-oxide/hydroxide. Microcline...assemblages are altered to argillic minerals and to sericite, which are normally stained red by microcrystalline |  | Maffini, M. Natalia, Wemmer, Klaus, Radice, Stefania, Oriolo, Sebastián, D'Eramo, Fernando, Coniglio, Jorge, Demartis, Manuel, Pinotti, Lucio (2017) Polymetallic (Pb-Zn-Cu-Ag ± Au) vein-type deposits in brittle-ductile transtensional shear zones, Eastern Sierras Pampeanas (Argentina): Age constraints and significance for the Late Paleozoic tectonic evolution and metallogenesis. Ore Geology Reviews, 89. 668-682 doi:10.1016/j.oregeorev.2017.07.003 | Journal (article/letter/editorial) | | alteration related to metallic ore deposition in the Las Guindas and Oro districts. The obtained ages postdate...veintype deposits from two little known districts, Las Guindas and Oro, situated in the Sierra de Comechingones...from north to south, three main districts: Oro, Las Guindas and Piedra Blanca (Fig. 1b). The individual...vein systems in the Las Guindas and Oro districts. In the two selected study areas, Las Guindas and Oro districts...1.1. Orientation and along-strike continuity The Las Guindas district is made up of two major mineralized |  | Perello, J., Carlotto, V., Zarate, A., Ramos, P., Posso, H., Neyra, C., Caballero, A., Fuster, N., Muhr, R. (2003) Porphyry-Style Alteration and Mineralization of the Middle Eocene to Early Oligocene Andahuaylas-Yauri Belt, Cuzco Region, Peru. Economic Geology, 98 (8) 1575-1605 doi:10.2113/gsecongeo.98.8.1575 | Journal (article/letter/editorial) | | occur locally. Hydrothermal alteration includes sericite-clay-chlorite, and potassic, quartz-sericitic...prospects, is variably overprinted by copper-depleting sericite-clay-chlorite alteration. Most porphyry copper...Tomizawa, 1986), best exemplified by Tintaya, Atalaya, Las Bambas, Katanga, and Quechua. For most researchers...37.9±1.4 50 km 72°30´ SANTO TOMAS 34.2 ±0.9 LAS BAMBAS 39.7±1.9 43.2±1.1 39.8±1.5 43.3±1.9(1)...Livitaca Pomacanchis Katanga Tintaya Cotabambas Las Bambas FIG. 5. Distribution and age of the Andahuaylas-Yauri |  | Munteanu, Marian, Marincea, Stefan, Kasper, Haino Uwe, Zak, Karel, Alexe, Veronica, Trandafir, Vasile, Saptefrati, George, Mihalache, Angela (2004) Black chert-hosted manganese deposits from the Bistritei Mountains, Eastern Carpathians (Romania): petrography, genesis and metamorphic evolution. Ore Geology Reviews, 24 (1) 45-65 doi:10.1016/j.oregeorev.2003.08.004 | Journal (article/letter/editorial) | | Carbonate schists. bqt = Black quartzites. scls = Sericite – chlorite schists. Corg = organic carbon. nd...al., 1976) is thrust on (2) the Tulghes Group (sericite – chlorite schists, metarhyolites, quartzites...Fig. 3): Tg1 (quartzites and quartz –sericite schists), Tg2 (sericite– chlorite schists F organic matter...metal sulfide deposits, sericite –chlorite schists and greenschists) and Tg4 (sericite– chlorite schists,...because of the organic matter that occurs in the sericite – chlorite schists and black cherts. ECMD are |  | | Journal (article/letter/editorial) | | J. P. Mil6si 1 BRGM, and 2 CNRS-CSCM, Orleans, France With 10 Figures Received November 13, 1991; accepted...of Layo appears to have preceded an "adularia-sericite" epithermal mineralization expressed in the western..."acide-sulfate" des vetas orientales de Layo pr6c~derait celles de type "adulaire-sericite" des vetas occidentales...South Peruvian Andes (Fig. 1), is of the "adularia-sericite" type and is broadly contained (the Orcopampa...deposits in the world: (1) the Chizeuil deposit in France (Cesbron et al., 1985) where it occurs with diaspore |  | | Journal (article/letter/editorial) | | Scnrsr The small specimen of pink, piedmontite-sericite schist was collected by Mr. W. E. Selbie, a prospector...pinkish-red color, with a silky luster due to abundant sericite. The specimen tends to split along two well-defined...Irregularly-shaped, black stains occur in the sericite along the surfacesof schistosity. Some of this...matrix which apparently consistsmainly of pale pink sericite Two thin sections were prepared, one Mrcnoscoprc...01 mm., in which are embedded abundant wisps of sericite, "streams" of piedmontite needles,accompanied |  | Arehart, G. B., Chakurian, A. M., Tretbar, D. R., Christensen, J. N., McInnes, B. A., Donelick, R. A. (2003) Evaluation of Radioisotope Dating of Carlin-Type Deposits in the Great Basin,Western North America, and Implications for Deposit Genesis. Economic Geology, 98 (2) 235-248 doi:10.2113/gsecongeo.98.2.235 | Journal (article/letter/editorial) | | Canyon deposit in Utah. Complete resetting of sericite by hydrothermal fluids of the temperature and...Therefore, dates from sericite are generally of questionable value unless that sericite can be shown to have...to date, sericite dates rarely, if ever, record the age of Au mineralization. However, sericite ages do...GT CT Elko C Reno AB BM 39° Great Basin Las Vegas FIG. 1. Location map for Carlin-type deposits...variously described as sericite, illite, and/or clay minerals. (The term sericite is used herein to refer |  | Amponsah, Prince Ofori, Salvi, Stefano, Béziat, Didier, Baratoux, Lenka, Siebenaller, Luc, Nude, Prosper Mackenzie, Nyarko, Richard Scriven, Jessell, Mark W. (2016) The Bepkong gold deposit, Northwestern Ghana. Ore Geology Reviews, 78. 718-723 doi:10.1016/j.oregeorev.2015.06.022 | Journal (article/letter/editorial) | | Développement, Observatoire Midi-Pyrénées, 14 Av. Edouard Belin, F-31400 Toulouse, France Azumah Resources Ghana...characterized by the presence of chlorite, calcite, sericite, quartz and disseminated pyrite, arsenopyrite...assemblage consisting of chlorite + calcite + sericite + quartz + sulphides. Graphitic layers within...observed include chlorite–calcite–epidote plus sericite, actinolite and albite while amphibolite facies...field of view. calcite (5%), chlorite (3%) and sericite (1%). Pyrite, and rarely arsenopyrite, occur as |  | | Journal (article/letter/editorial) | | quartz, feldspars, chlorite, titanite, muscovite, sericite, prehnite, clinozoisite, laumontite, saussurite...Massif, SW Poland. The black dot indicates the quarry, where samples were collected. SS – Sienice-Strzelin...collected in a large active quarry located east of the city of Strzelin. The quarry is situated within a thick...stock of the granite intrusion. In the neighbouring quarry, which is situated within a granitic dyke, there...veins were collected during fieldwork in the main quarry in Strzelin. They were analysed by optical microscopy |  | | Report (volume) | | ............. Technical description of a slate quarry............................. PART II. SLATE DEPOSITS............ 138 GLOSSARY OF GEOLOGICAL AND SLATE-QUARRY TERMS ....................... 146 INDEX .........Merrill quarry at Brownville, Me................................. 66 XIII. Old Bangor quarry (north-northeast...end), Pennsylvania........... 76 XIV. Old Bangor quarry (south-southwest end), Pennsylvania ............. 76 XV. Derricks and carriers, Old Bangor quarry, Pennsylvania ........... 78 XVI. Map of Slatington |  | | Journal (article/letter/editorial) | | National G y p s u m C o . quarry (formerly the Huron-Portland Ce ment Co. quarry)—Alpena barite, calcite...marcasite, pyrite, sphalerite, strontianite (r) Paxton quarry—Paxton calcite, chalcopyrite, dolomite, marcasite...Silica C o . quarry (c)—Rockwood calcite, celestite, fluorite, quartz, sulfur (r) Sibley quarry (c)—Trenton... pyrite, sphalerite (r), vivianite (r) Cheney quarry (outcrops in the vicinity)—Imperial Heights (near...Wallace Stone C o . quarry Iosco C o u n t y National G y p s u m C o . quarry—National Baraga C o |  | | Report (issue) | | DEPOSITS OF GEOBGIA FRONTISPIECE-PLATE I OLD DEVER QUARRY, ROCKMART, POLK COUNTY, WHILE OPERATED BY THE GEORGIA..._permission to publish them. In January, 1916, when the sericite deposits first attracte¢1. attention as a possible..... , ..................... . Ellis Davis & Son quarry ............................. ; ...... . ~ .Dever...................................... . Portland quarry ........................................... . Fish... . . . . . . . . . . . . . . . 95·97 Cornelius quarry . . . . . . . . . . . . . . . . . . . . . . . |  | Skirrow, R.G, Camacho, A, Lyons, P, Pieters, P.E, Sims, J.P, Stuart-Smith, P.G, Miró, R (2000) Metallogeny of the southern Sierras Pampeanas, Argentina: geological, 40Ar–39Ar dating and stable isotope evidence for Devonian Au, Ag–Pb–Zn and W ore formation. Ore Geology Reviews, 17 (1) 39-81 doi:10.1016/s0169-1368(00)00004-4 | Journal (article/letter/editorial) | | mesothermal lode Au Ž"Cu " Ag. in the Sierra de Las Minas and Sierras de Cordoba yields ´ Devonian 40Ar–...veining in the El Guaico district Ž386 " 4 Ma, sericite., and W-bearing quartz vein mineralization in...including the host to Ni–Cu sulfide mineralization at Las Aguilas in the Sierras de San Luis ŽFig. 1., occurred...provincesa . Age b Ni, Cu, Co, PGE, Au, Cr Ordovician Las Aguilas–Virorco ŽSL. Au, Ag, Cu, W, U Devonianc...Miocene–Pliocenee Miocene–Pliocenee Sierras de Las Minas ŽLR. Rıo ´ Candelaria ŽCD. Santo Domingo ŽSL |  | | Journal (article/letter/editorial) | | Tgl, psammitic (sericite quartzites, sericitechlorite schists); Tg 2, graphitic (sericite-chloritekgraphite...Kuroko-type base metal deposits, sericite-chlorite schists); Tg 4, composite (sericite-chlorite schists, metagreywackes...Crystalline-Mesozoic Zone. Group Formation Tg4 Tg3 Tg2 Tgl sericite-chlorite schists, metagreywackes, felsic rnetavolcanics...felsic metavolcanics and sericite-chlorite schist: Isipoaia mafic intrusion sericite-chlorite schists, metacherts...metacherts, limestones sericite quartzites, sericite-chlorite schists dacites, granodiorites, micaschists |  | | Journal (article/letter/editorial) | | characterised by the presence of abundant pale green sericite. 195 sedimentation. The sequence at Salgadinho...relatively quartz-rich at the base and richer in green sericite and sulphides in the upper portion. T h e most...the presence and abundance of argillic minerals, sericite, chlorite, pyrite, quartz and siderite. In both...mineralisation of Fig. 2) is characterised by green sericite-pyrire- chalcopyrite-quartz- ankerite- chlorite...chlorite whereas less intense alteration by green sericite-pyrite-quartz - chlorite, slight alteration by green |  | | Report (issue) | | others, 2004 Palo Seco quarry, coarse grained. Hall and others, 2004 Palo Seco quarry, coarse grained. P...commun. cited in Hall and others (2004). Palo Seco quarry, coarse grained. Hall and others, 2004 Small...Deseada, coarse grained. Hall and others, 2004 Las Piedras, coarse grained. Hall and others, 2004 ...8±0.3 Ma, no plateau so integrated age calculated. Las Marias, Maraguan facies, very coarse grained. Hall...Sierra Formation, Las Margaritas. Hall and others, 2004 La Sierra Formation, Las Margaritas. Hall |  | | Journal (article/letter/editorial) | | and chlorite are metamorphic minerals, whereas sericite, carbonates, and chlorite are hydrothermal alteration...metasediments. Quartz-sericite, sericite, carbonate-sericite, and chlorite-sericite constitute four distinctive...the mineralized quartz vein. The quartz-sericite and sericite zones are characterized by high contents...carbonate-sericite zone is by high contents of CaO, Au, Cu, Cr, Ni, and Y, and the chlorite-sericite zone...more abundant in the carbonate-sericite zone followed by the sericite one. The geochemistry of the alteration |  | Yuan, Hongqing, Shen, Ping, Pan, Hongdi, An, Zhi‐Hai, Ma, Ge, Li, Wenguang (2020) Geochemistry and mineral chemical behavior of hydrothermal alteration of the Tuwu porphyry copper deposit, Eastern Tianshan, Northwest China. Geological Journal, 55 (1) 786-805 doi:10.1002/gj.3437 | Journal (article/letter/editorial) | | Chinese Academy of Science, Beijing, China chlorite‐sericite/albite, phyllic, and propylitic alteration and...that Cu is highly associated with the chlorite‐sericite (albite) stage and followed 6 Yanxin Copper...potassic zones (0.18–0.46 wt.%) to the chorite‐sericite (albite) zones (0.28–0.58 wt.%), resulting from...pressure. The δ18Owater values of quartz in chlorite‐sericite (albite) zones and phyllic zones range from −0...Ma (Rui, Wang, & Wang, the potassic, chlorite‐sericite (ablite), phyllic, and propylitic zones 2002) |  | Chakurian, A. M., Arehart, G. B., Donelick, R. A., Zhang, X., Reiners, P. W. (2003) Timing Constraints of Gold Mineralization along the Carlin Trend Utilizing Apatite Fission-Track, 40Ar/39Ar, and Apatite (U-Th)/He Methods. Economic Geology, 98 (6) 1159-1171 doi:10.2113/gsecongeo.98.6.1159 | Journal (article/letter/editorial) | | deposits in Nevada CT Elko Reno Great Basin Las Vegas FIG. 1. Location map of Carlin-type deposits...1980) and Cu-Au porphyry mineralization near Gold Quarry (Teal and Jackson, 1997). Dikes and temporally...fission-track dating of apatite, 40Ar/39Ar dating of sericite-altered lamprophyre dikes, and (U-Th)/He dating...partially or fully reset the sericite grains or if new (gold age) sericite was present. Lamprophyre dikes...deposit in which the major K-bearing phase is sericite (fine-grained muscovite). In addition, previous |  | | Journal (article/letter/editorial) | | in the granite massif of Parthenay (Deux-S~vres, France). At the La Pagerie outcrop the initial rock has...~ b i o t i t e a n d 4-7 ~ s e c o n d a r y sericite m i c a p r o d u c e d by r e c r y s t a l l...c r o p , a s e c o n d a r y m i c a (called sericite h e r e ) is p r e s e n t p r i n c i p a l l...plagioclase -I-biotite --> kaolinite + vermiculite + sericite + N a +. The vermiculites are potassic, as are...and orthoclase are in contact. The muscovite (or sericite in the case of La Rayrie samples) is unaffected |
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