 | | Journal (article/letter/editorial) | | INCLUSION STUDIES OF THE TURMALINA Cu-Mo-BEARING BRECCIA PIPE, NORTHERN PERU* S•:•vsN R. CA•r•sos AS])...mostlylessthan50 cm in diameter,that The Turmalina,or Canchaque, mine is locatedat 5024' S, 70o35' W, approximately...minehasbeenworked of Hauncabamba,Piura Department,northwestern of hydrothermal andhasyielded15 Peru (Fig. 1). The mineis...hematite, andboth feldsparsare converted to seriThe mine is developedin a cylindrical,near-verti- alkaliandplagioclase...epidoteare alsopresentin the alteredgranodiorite. Tourmaline rosettes with acicular, bluish-green lathsradiatingfrom |  | | Journal (article/letter/editorial) | | shear zone-related gold mineralization at the Turmalina deposit, Quadrilátero Ferrífero, Brazil: structural...Germany, part of Springer Nature 2018 Abstract Turmalina is an important orogenic gold deposit located...Three deformation events are recognized in the Turmalina gold deposit: D1 and D2 are the result of a progressive...Ferrífero . Turmalina deposit . Gold . Structural evolution . Sulfur isotopes Introduction The Turmalina orogenic...provinces in the world (Thorman et al. 2001). In the Turmalina region, the geological units are correlated and |  | | Book | | Gemstonesof Peru . TO ' ..J.O[_)(ON '\J./ITI1 KY Be-51 R~GAF-P5 f JaroslavHyrsl Gemstonesof...Gemstonesof Peru GRflnil © 2012 Text by Jaroslav Hyr~I © 2012 Photos by Jaroslav Hycll (166), Fidel Salinas...LARCO in Lima, No. 100849. Faceted scheelite from Turmalina, 8.58 et and 8.5 mm wide. Col/. and photo J Hyrsl...Coll. Z. Rosales. Photo J Hyrsl. 6 Introduction Peru is a country rich in minerals, with numerous very...Crowley et al. (1997) and most recently in the book "Peru, Paradise of Minerals" (Hyrsl et al., 2011 ). N |  | Brando Soares, Mariana, Corrêa Neto, Atlas Vasconcelos, Bertolino, Luiz Carlos, Alves, Felipe Emerson André, de Almeida, Antônio Modesto, Montenegro da Silva, Pedro Henrique, Mabub, Ricardo Oliveira de Araújo, Manduca, Luedson Guimarães, Araújo, Ivan Mendes Caixeta de Pamplona (2018) Multistage mineralization at the hypozonal São Sebastião gold deposit, Pitangui greenstone belt, Minas Gerais, Brazil. Ore Geology Reviews, 102. 618-638 doi:10.1016/j.oregeorev.2018.09.028 | Journal (article/letter/editorial) | | deposit of Ag-rich gold (electrum), native Bi, tourmaline, pyrrhotite, chalcopyrite, and notably bismuth...hydrothermal overprint. Nevertheless, at the Turmalina gold mine (1.172 Moz with 4.22 g/t), the only other...high-T fluid inclusions and mineral assemblages at Turmalina (+garnet, staurolite – Fabrício-Silva, 2018) and...and Marshak, 1998; Brito Neves, 2014). The QF province, located in the southern São Francisco craton...associated with the Pitangui greenstone belt are Turmalina (Fig. 1A) and small occurrences such as Guardas |  | | Journal (article/letter/editorial) | | B-isotope variations in tourmaline from rare-element pegmatites in the Borborema Province of Brazil Robert B...Rare-element pegmatites Paraíba tourmaline a b s t r a c t Tourmaline chemical and B-isotope compositions...1 barren pegmatite in the Borborema Pegmatite Province of NE Brazil, and also from a leucogranite considered...zoning structure with tourmaline present in all units but the quartz core. Tourmaline major-element composition...schorl–dravite only. The full range of δ11B values in tourmaline from the Borborema pegmatites is from −20.2 to |  | Tassinari, Colombo C.G., Mateus, Antonio M., Velásquez, Marta E., Munhá, José M.U., Lobato, Lydia M., Bello, Rosa M., Chiquini, Ana Paula, Campos, William F. (2015) Geochronology and thermochronology of gold mineralization in the Turmalina deposit, NE of the Quadrilátero Ferrífero Region, Brazil. Ore Geology Reviews, 67. 368-381 doi:10.1016/j.oregeorev.2014.12.013 | Journal (article/letter/editorial) | | thermochronology of gold mineralization in the Turmalina deposit, NE of the Quadrilátero Ferrífero Region...Thermochronology Turmalina Mine Gold mineralization Paleoproterozoic a b s t r a c t The Turmalina gold deposit...source/pathways of the ore-forming fluids in the Turmalina deposit, a multi-system isotope (Pb–Pb, Rb–Sr...U/Th decoupling during ore remobilization. The Turmalina oresystem lifetime is consequently confined to...650.000 mE N 7.800.000 mN Belo Horizonte Turmalina mine 7.750.000 mN Belo Horizonte Campo Belo Bação |  | | Journal (article/letter/editorial) | | trace-element data on quartz from the Borborema Pegmatite Province, northeast Brazil H. BEURLEN1,*, A. MÜLLER2,...rare-element class from the Borborema Pegmatite Province in northeast Brazil were analysed for fourteen...the columbite group (Černý, 1989a), zircon, tourmaline group and garnet group. A considerable number...granitic pegmatites from the Borborema Pegmatite Province (BPP) in northeast Brazil have been determined...geochemical and mineral exploration purposes in the province. The study was motivated by the observation that |  | | Journal (article/letter/editorial) | | distributed tourmaline that is concentrated in patchy domains, or pockets. The tourmaline-rich pockets...Pyrrhotite and late chalcopyrite occur in the tourmaline-rich pockets. Bismuth, bismuth–gold intermetallic...preexisting, chalcopyrite-bearing microfractures in the tourmaline-rich pockets. Hedleyite (Bi7Te3) as well as the...historically important Passagem de Mariana gold mine shows similarities that are indicative of a possible...in the auriferous quartz– tourmaline lode of the Passagem de Mariana mine, Minas Gerais, Brazil (Oberthür |  | | Journal (article/letter/editorial) | | composition and coloring of tourmaline is discussed. It is shown that manganese tourmaline-tsilaisite is similar...similar to tourmaline-elbaite in composition and condition formation. The miscibility in the sherlite-elbaite-tsilaisite...present in tourmaline in the form of Mn 2 + and Mn 3+. The pink coloring of the tourmaline is caused by...many authors on the nature of pink coloring of tourmaline, the dyeing properties of Mn 2+ and Mn 3+, the...crystallization of pink tourmaline, and the distribution of manganese in differently colored tourmaline. - -auth. |  | | Journal (article/letter/editorial) | | + Mg) ratio and the Ti and A site contents of tourmaline as promising indicators of granitic magma evolution...recent past, important research has shown how tourmaline can be used as a petrogenetic indicator in pegmatite...mineralization. Previous studies have demonstrated that tourmaline composition may be a useful guide to ascertain...have investigated whether these results hold for tourmaline-bearing granitic rocks from other geotectonic...collected so far has shown that, whereas most tourmaline components and component ratios seem essentially |  | Beurlen, H., de Moura, O. J. M., Soares, D. R., Da Silva, M. R. R., Rhede, D. (2011) Geochemical and geological controls on the genesis of gem-quality "Paraiba Tourmaline" in granitic pegmatites from northeastern Brazil. The Canadian Mineralogist, 49 (1) 277-300 doi:10.3749/canmin.49.1.277 | Journal (article/letter/editorial) | | CONTROLS ON THE GENESIS OF GEM-QUALITY “PARAÍBA TOURMALINE” IN GRANITIC PEGMATITES FROM NORTHEASTERN BRAZIL... Germany Abstract The electric blue Paraíba Tourmaline (PT) occurs in northeastern Brazil only in four...granitic pegmatites of the Borborema Pegmatitic Province (BPP). These PT-bearing pegmatites are rich in...Equador Formation. Black comb-textured dravitic tourmaline in the border zone indicates crystallization...pegmatite-forming melt itself. Keywords: “Paraíba tourmaline”, color-zoned elbaite crystals, copper, electron-microprobe |  | | Journal (article/letter/editorial) | | 150 X 150 >600 Angularto sub- Absent rounded Peru San Pedro de 10 to >50% rounded Granodiorite...Felsite stock(?) i Mr, 1.6% Cu; alteration (t = tourmaline) Principal hypogene metallicminerals (in order...Chalcopyrite,pyrite, scheelite Quartz, epidote, tourmaline, chlorite, cal- N 20 ø W + N 70 ø E faults(...chalcopyrite, specularitc,scheelite Quartz, tourmaline, K-feld- Granodiorite pluton line Absent...Quartz, tourmaline, sericite, Not recognized Granodiorite pluton Mo calcite Tourmaline, quartz |  | Garda, G.M., Trumbull, R.B., Beljavskis, P., Wiedenbeck, M. (2009) Boron isotope composition of tourmalinite and vein tourmalines associated with gold mineralization, Serra do Itaberaba Group, central Ribeira Belt, SE Brazil. Chemical Geology, 264 (1) 207-220 doi:10.1016/j.chemgeo.2009.03.013 | Journal (article/letter/editorial) | | of tourmaline occur as gold-bearing stratiform tourmalinites and in mineralized quartz–tourmaline veins...granitic rocks, resulting in the formation of tourmaline-rich quartz– carbonate veins with gold and base...the gold prospects. We conclude from this that tourmaline formed or recrystallized from crustal fluids related...fluid inclusions in Tapera Grande tourmalinite tourmaline and quartz. The vein-hosted tourmalines at Quartzito...values (− 15‰ to − 7‰ for light blue, Ti-free tourmaline from quartz– carbonate veins). We attribute the |  | Ochoa-Landín, L.H., Valencia-Moreno, M., Calmus, T., Del Rio-Salas, R., Mendívil-Quijada, H., Meza-Figueroa, D., Flores-Vásquez, I., Zúñiga-Hernández, L.G. (2017) Geology and geochemistry of the Suaqui Verde deposit: A contribution to the knowledge of the Laramide porphyry copper mineralization in south central Sonora, Mexico. Ore Geology Reviews, 81. 1158-1171 doi:10.1016/j.oregeorev.2016.10.011 | Journal (article/letter/editorial) | | quartz veinlets filling stockwork zones. Quartz-tourmaline breccias, presumably pre-dating the copper sulfide...which the Buenavista del Cobre (formerly the Cananea mine), La Caridad, Mariquita, and Milpillas deposits...belonging to the Sierra Madre Occidental volcanic province cover the Laramide and older rocks of the Suaqui...in the pluton cupolas, characterized by quartz-tourmaline, which are exposed about 13 km S-SE of the Suaqui...a preferential NE-SW orientation. The quartz-tourmaline breccias are clast-supported, and show jig-saw |  | | Journal (article/letter/editorial) | | Florida Canyon deposit, Bongará district, northern Peru— Saulo Batista de Oliveira, Caetano Juliani, and...deposit for gold exploration in southern Gansu Province, central China—Yongquan Li, Dehui Zhang, Nan Yang...exploration for the Dehua gold orefield of Fujian Province, SE China—Pei Ni, Su-Ning Li, Tan Bao, Wen-Yan...Anton R. Chakhmouradian, and Martin Brtnicky 527 Tourmaline geochemistry and boron isotopic variations as...of orogenic gold deposits in southeast Guizhou Province, China: Constraints from Re-Os and He-Ar isotopic |  | | Book (chapter) | | = spinel, Clark 683 (1993). taltalite = green tourmaline ± Cu ore, Dana 6th, 551 (1892); AM 96, 911 (2011)...augite, Deer et al. 1A, 122 (1982). tire-cendre = tourmaline, de Fourestier 354 (1999). tireeite = talc +...Ti-rich tourmaline, MM 24, 624 (1937); AM 96, 911 (2011). Titanturmalin = Ti-rich tourmaline, MM 24,...(1964). todo moonstone = tourmaline, Bukanov 89 (2006). Todomundostein = tourmaline, Haditsch & Maus 220... toermalijn group = tourmaline, Zirlin 108 (1981). toermalyn group = tourmaline, Macintosh 36 (1988) |  | | Journal (article/letter/editorial) | | by Co/Ni ratios in coexisting arsenopyrite and tourmaline: the auriferous lode of Passagem, Quadrilátero...Passagem de Mariana is characterised by abundant tourmaline, which is intergrown with arsenopyrite. Spot...Co/Ni ratios consistently <1. The coexisting tourmaline also has Co/Ni <1, with Co and Ni contents that...those in the arsenopyrite. The Co/Ni ratios of tourmaline and arsenopyrite are tightly distributed along...of lode tourmaline and its B-isotope data (from the literature), the Co/Ni ratios of tourmaline and arsenopyrite |  | Cobbing, E. J., Pitcher, W. S., Wilson, J. J., Baldock, J. W., Taylor, W. P., McCourt, W., Snelling, N. J. (1981) The Geology of the Western Cordillera of northern Peru. Overseas Memoir 5. Institute of Geological Sciences | Report (issue) | | The geology of the Western Cordillera of northern Peru E. J. Cobbing, W. . Pitcher, J.J. Wilson,J. W. Baldock...most of Ihe work done by nn IGS tea n1 resident in Peru from 1963 to 197 l. The team was led by Dr J.J.... was Lo study the granitic Coastal Batholith of Peru. J t began in 1966 and has continued to the present...University group, and from 1971 onwards has worked in Peru on a short-term basis funded by ODA, with the objective...of t he intrusive and volcanic rocks of central Peru 103 A proposed model I I0 Eight: Reconnaissance |  | | Journal (issue) | | inclusions orientated perpendicular to the c-axis. A tourmaline-quartz combination from Brazil has an iridescent...albite-oligoclase orthoclase perthite. Four-rayed star tourmaline (bicolour elbaite) has one direction caused by...new unusual cat's-eyes and star stones Quartz-tourmaline cat's-eye from Brazil A strange stone weighing...from a pegmatite in Minas Gerais. The base is tourmaline with a transparent light green core with a dark...structure. The next phase of growth on the green tourmaline consisted of thin tourmalines and white hexagonal |  | Andrade, M. B., Atencio, D., Filho, L. A. D. M., Ellena, J. (2011) TThe structure of a microlite-group mineral with a formula near NaCaTa2O6F from the Morro Rendondo Mine, Coronel Murta, Minas Gerais. The Canadian Mineralogist, 49 (2) 615-621 doi:10.3749/canmin.49.2.615 | Journal (article/letter/editorial) | | A FORMULA NEAR NaCaTa2O6F FROM THE MORRO REDONDO MINE, CORONEL MURTA, MINAS GERAIS, BRAZIL Marcelo B....a formula near NaCaTa2O6F from the Morro Redondo mine, Coronel Murta, Minas Gerais, Brazil. On the basis...une formule voisine de NaCaTa2O6F, provenant de la mine Morro Redondo, Coronel Murta, Minas Gerais, Brésil...a microlite-group mineral from the Morro Redondo mine. Pyrochlore-supergroup minerals have been studied...in the northern part of the Oriental Pegmatite Province of Minas Gerais (that extends 320 km east to west |  | | Report (issue) | | Patagonia, Argentina, Fredy Huanqui de Centromin Peru, William X. Chavez de la New Mexico Institute of...Jose Manrique Z. de la 3 Universidad de Tacna, Peru. ALGUNAS DEFINICIONES FUNDAMENTALES Una "ocurrencia...EJEMPLOS High Plateau, Del Norte County, USCA Goto Mine, Luzon, PLPN (Wells y otroa, 1946) (LeBlano y Violette...Nombre Ace of Spades Adobe Canyon Gp. Ajax Alice Mine Allan (Johnson) Alta Hill Althouse Alyce and Blue...etc Buttercup Chrome Camden Mine Campbell Camptonville area Castro Mine Cattle Springs Cavyell Horse |  | | Journal (article/letter/editorial) | | American Mineralogist, Volume 70, pages 1-15, 1985 Tourmaline as a petrogeneticindicator mineral: an examplefrom...University of Maine, Orono, Maine 04473 Abstract Tourmaline, a mineral often overlooked in petrologic studies...of possible substitutions in tourmaline, generalizationsrelating tourmaline compositionand rock type are...diagramsfor tourmaline from different rock types. As an example of the utility of tourmaline in petrologic...schists from NW Maine is investigated. These tourmaline grainstypically display three generalstylesof |  | | Journal (article/letter/editorial) | | 131-143 (2000) COMPLEXLY ZONED FIBROUS TOURMALINE, CRUZEIRO MINE, MINAS GERAIS, BRAZIL: A RECORD OF EVOLVING...Silver-gray tourmaline fibers intergrown with a deep pink elbaite host from the Cruzeiro mine, Minas Gerais...well as the host. A fourth generation of fibrous tourmaline fills fractures that cut all previous generations...stability followed by reaction(s) in which the tourmaline was initially unstable, partially dissolved owing...compositional variability observed. In this multistage tourmaline sample, individual fibers exhibit the most chemically |  | | Journal (article/letter/editorial) | | brecciamatricesconsistof variableamountsof quartz, tourmaline,specularitc,anhydrite, pyrite, chalcopyrite,bornitc...22$2.50 15 4 4 LOSBRONCES-RIO BLANCO: Cu& TOURMALINE BRECCIAS Introduction 1545 vvv v THE Los Broncesmine... at an averagegradeof about 1.2 percent Cu. The mine is about 800 m east • "n/I/oX S•n Enrlque•Bx-...severalflotationconcentrators was installed near the mine site. ?• 71 70 32 CompafiiaMineraDisputadadelasCondesS...system. In addition,severalhydrothermalcopper-tourmaline brecciasoccursouthof the Rio Blancomine(Fig. |  | | Journal (article/letter/editorial) | | Paleozoic deposits occur in Australia, Kazakhstan, Peru, Russia, Uzbekistan, France, and Portugal. The data...Mazhala, China Qolqoleh, Iran Bangbu, China Oriental mine, USA Big Hurrah, USA Mouther Lode, USA Yata, China...China Daeil, Korea Macraes, New Zealand Province Cenozoic South-central Alaska Yukon Territory Northwestern...Zagros Greater Caucasus Northwestern Mexico Yunnan Province Tibet Lang County, Tibet Cuomei County, Tibet...Tibet Sanandaj–Sirjan Zone, Kurdistan Province Southern Tibet Mezocoic California Alaska California Guizhou |
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