 | Clark, Alan H., Farrar, Edward, Kontak, Daniel J., Langridge, Robert J., Arenas F., Mario J., France, Lynne J., McBride, Sandra L., Woodman, Priscilla L., Wasteneys, Hardolph A., Sandeman, Hamish A., Archibald, Douglas A. (1990) Geologic and geochronologic constraints on the metallogenic evolution of the Andes of southeastern Peru. Economic Geology, 85 (7) 1520-1583 doi:10.2113/gsecongeo.85.7.1520 | Journal (article/letter/editorial) | | MetallogenicEvolution of the Andes of Southeastern Peru ALANH. CLARK,EDWARDFARlIAR,DANIELJ. KONTAK,*ROBERT... GedlogoConsultor,Caminosdel Inca 698, Lima 33, Peru LYNNEJ. FRANCE,**SANDRA L. MCBRIDE,PRISCILLA L...post-Paleozoic metallogenicevolutionof southeastern Peru is clarifiedon the basisof the stratigraphic an...the UpperTriassicto LowerJurassic (190-225 Ma) Carabaya batholithin the Inner Arc; magmagenesisresultedfrom...contiguous centralAndeantransects, southeastern Peru differsmarkedlyfrom other areasof the countryin |  | | Journal (article/letter/editorial) | | Springer-Verlag1988 The Miocene-Pliocene Macusani Volcanics, SE Peru I. Mineralogy and magmatic evolution...Canada, 1470, Lima 13, Peru Abstract. The Miocene-Pliocene Macusani volcanics, SE Peru, outcrop in three...activity from 10 to 4 Ma in the Macusani field. The volcanics in the Macusani basin comprise crystal-rich...entire volcanic field), sillimanite, sch6rl-rich tourmaline, cordierite-type phases, hercynitic spinel, fluor-apatite...is essentially constant throughout the entire Macusani field. Two distinct generations of plagioclase |  | Pichavant, Michel, Kontak, Daniel J., Briqueu, Louis, Herrera, Jacinto Valencia, Clark, Alan H. (1988) The Miocene-Pliocene Macusani Volcanics, SE Peru. Contributions to Mineralogy and Petrology, 100 (3) 325-338 doi:10.1007/bf00379742 | Journal (article/letter/editorial) | | Springer-Verlag 1988 The Miocene-Piiocene Macusani Volcanics, SE Peru II. Geochemistry and origin of a felsic...1470, Lima 13, Peru Abstract. The Miocene-Pliocene Macusani ash-flow tufts from SE Peru, containing magmatic...fractionated relative to the first erupted. The Macusani magmas are direct products of crustal melting...fail to account for a number of features of the Macusani magmas, aH2o was internally controlled and magma...temperatures (up to 800 ~ C) in the source region. The Macusani magmas are generated as low melt fraction batches |  | Harlaux, Matthieu, Kouzmanov, Kalin, Gialli, Stefano, Laurent, Oscar, Rielli, Andrea, Dini, Andrea, Chauvet, Alain, Menzies, Andrew, Kalinaj, Miroslav, FontbotĂŠ, LluĂs (2020) Tourmaline as a Tracer of Late-Magmatic to Hydrothermal Fluid Evolution: The World-Class San Rafael Tin (-Copper) Deposit, Peru. Economic Geology, 115 (8). 1665-1697 doi:10.5382/econgeo.4762 | Journal (article/letter/editorial) | | Inc. Economic Geology, v. XXX, no. XX, pp. XâX Tourmaline as a Tracer of Late-Magmatic to Hydrothermal...The World-Class San Rafael Tin (-Copper) Deposit, Peru Matthieu Harlaux,1,â ,* Kalin Kouzmanov,1 Stefano...A., Jr. Lorenzo Bernini 149, San Borja, Lima 27, Peru Abstract The world-class San Rafael tin (-copper)...(-copper) deposit (central Andean tin belt, southeast Peru) is an exceptionally large and rich (>1 million...extension). They show volumetrically important tourmaline alteration that principally formed prior to the |  | | Journal (article/letter/editorial) | | of a two-mica ignimbrite suite: the Macusani Volcanics, SE Peru Michel Pichavant and Jean-Marc Montel...ABSTRACT: The Miocene-Pliocene Macusani ash-flow tuffs and glasses from SE Peru are a rare example of two-mica...Cordillera Oriental in the Central Andes. In the Macusani field, the rocks are characterised by andalusite...differences between the magmatic evolution of the Macusani Volcanics and of Hercynian and Himalayan two-mica...paper focusses on the Miocene-Pliocene Macusani Volcanics from SE Peru, which, so far, constitute the only |  | Lehmann, B., Dietrich, A., Heinhorst, J., MĂŠtrich, N., Mosbah, M., Palacios, C., Schneider, H. -J., Wallianos, A., Webster, J., Winkelmann, L. (2000) Boron in the Bolivian tin belt. Mineralium Deposita, 35 (2) 223-232 doi:10.1007/s001260050017 | Journal (article/letter/editorial) | | August 1998 / Accepted: 19 August 1999 Abstract Tourmaline alteration and high boron contents are typical...magmatic-hydrothermal systems of the Bolivian tin province. The average boron content in melt inclusions...the Andean tin belt of Bolivia and southernmost Peru. Both metal provinces represent short episodes of...central Andes The Andean tin belt of Bolivia, SE Peru and northernmost Argentina (Fig. 1), usually known...invariably characterized by a prominent hydrothermal tourmaline component. Tourmalinization deÂŽnes the high-temperature |  | | Journal (article/letter/editorial) | | 1. GEOLO(~tCAL SECTIOh'S through tl, e A~DES of PERU and Bo1,1vIA : I I - - F r o m tl~e P o w r o f............. (2) The Country between Arequipa and Puno .................. (3) The Country between Tirapata...Expedition ix) Peru. I t deals with a second and pal~llel section drawn through the south of Peru from the...and the port of Puno on Lake Titicaca, is accessible by the Southern Railway of Peru, of which we were...taken. For the continuation of the section beyond Puno through the Eastern Cordillera, it was found necessal |  | | Journal (article/letter/editorial) | | from southern Peru to northern Argentina and is the easternmost metallogenic province of the central...porphyry systems. 313 314 DIETRICH ET AL. 76° PERU 72° Neogene-Recent volcanic arc Triassic and Tertiary...Proterozoic basement rocks 16° 68° San Rafael Macusani 16° Cerro Verde Chojlla Cuajone La Paz Toquepala...biotite are altered to fine-grained quartz-sericite-tourmaline aggregates), set in a fine-grained matrix. Phenocrysts...occur as dikelike to pipelike bodies, having a tourmaline and silica-cemented matrix of crushed rock. Angular |  | | Report (chapter) | | Special Publications Sooty sweat stains or tourmaline spots? The Argonauts on the Island of Elba (Tuscany)...Missouri-Columbia on February 21, 2013 Sooty sweat stains or tourmaline spots? The Argonauts on the Island of Elba (Tuscany)...bony-white aplitic rock dotted with blue-black tourmaline spots. Capo Bianco aplite is the uncommon result...the crystallization of peculiar spherical dark tourmaline clots in a very fine-grained white groundmass...we describe the geology and petrology of the tourmaline-rich Capo Bianco aplite cropping out as a dismembered |  | | Journal (article/letter/editorial) | | stability of tourmaline with respect to other femic aluminosilicates. Equilibria among tourmaline, biotite...of evolved B-rich magmas limits the amount of tourmaline that can crystallize; thus, the buffering reactions...values for these same minerals in rhyolite from Macusani, Peru [from table 6 of Pichavant et al. (1988)] (Table... From Icenhower & London (1995). From Macusani rhyolites, Peru (Pichavant et al., 1987). 2 In evolved...et al., 1989) and peraluminous rhyolite from Macusani, Peru (London et al., 1988) measured, among other |  | | Journal (article/letter/editorial) | | The saturation of minerals containing B and P (tourmaline and apatite) has also been investigated in granitic...a natural F-, B-, and Prich composition (Macusani glass, Peru). Starting material and procedures Starting...composition of the natural sample (MAC-JV1, Macusani glass, Peru) used in this study is given in Table 2...the experiments. Table 2. Composition of the Macusani starting glass - Experimental procedure Experimental...are given in Table 4 10 [] P-bearing melt ] [] Macusani melt ~ ? - . " 9 c,~/4"- I " .,4 ,~. 8oooc |  | | Report (issue) | | Geological Survey, Reston, Va.; V. Raul Eyzaguirre, Lima, Peru; Fernando Urquidi B., American Embassy, La Paz,...Argentina, western Boliva, northern Chile, and southern Peru, are potential targets for hydrothermal mineral...volcanism in the central Andean region of southern Peru, northern Chile, western Bolivia, and northwestern...investigations. 1 76" 68' 72° \ 12° 12° PERU Macusani > 16' ijjÂŽ...(1984 and the Institute de Geologia y Vh'neria del Peru (1975). 1A Although many papers about the young |  | | Journal (article/letter/editorial) | | at 4 kbar and variable fHiO suggest that the tourmaline-muscovite granite evolved under progressively...in the source region of the felsic peraluminous Macusani magmas. The mineralogical and geochemical contrasts...andalusite) and Al-rich phases (muscovite, biotite, tourmaline and rare cordierite, garnet and hercynite) in... Such calculations have been performed on the Macusani obsidian glasses JV1 and JV2 using the regression...estimates using phenocryst phases from the parental Macusani ash flow tuffs (fOi intermediate between the FMQ |  | | Journal (article/letter/editorial) | | Geochemistry Isotopes North Queensland Hodgkinson Province a b s t r a c t Moderately to strongly fractionated...the central and eastern parts of the Hodgkinson Province, north Queensland, Australia. The granites have...and Mount Alto Suites. Early formed magmatic tourmaline is a feature of the Wangetti and Mount Alto granites...make up a signiďŹcant part of the Broken River Province (Withnall, 1997). Current models invoke either...(rare) along the western margin of the Hodgkinson Province (Bultitude et al., 1997a; Garrad and Bultitude |  | | Journal (article/letter/editorial) | | the Andean Cordillera are also P rich (e.g., Macusani, Peru; Morococala and Los Frailes, Bolivia). In these...rich. For example, early erupted tuffs of the Macusani volcanic center, southeastPeru, contain 0.31-0...2 : globular quartz granite, sample 1111; 3 : tourmaline granite, sample 1O7Qt4: aphyricgranite,sample...natural peraluminous rhyolite obsidian from Macusani, Peru, that is very similar in composition to the...luft, mesa capping unit I 964). Representative tourmaline-muscovite granites San AbzAn@Orr 0.244\0.027)1551 |  | Lehmann, Bernd, Ishihara, Shunso, Michel, Hubert, Miller, Jim, Rapela, Carlos W., Sanchez, Alberto, Tistl, Michael, Winkelmann, Lothar (1990) The Bolivian tin province and regional tin distribution in the Central Andes; a reassessment. Economic Geology, 85 (5) 1044-1058 doi:10.2113/gsecongeo.85.5.1044 | Journal (article/letter/editorial) | | Cu-Mo-Au-Fe(WesternCordillera),Cu- sometungstenoccursin central Peru. This restricted Pb-Zn-Ag-Au (Altiplano), and Sn-W-Bi-Sb-Ag-Au...⢠? Bolivian tinbelt ;-.',.'.⢠Sample area Ă PERU Quimsa Cruz O "x ⢠'â˘x Major Sn deposits ...portantsupplementto the more commonstudieson (tourmaline)is a characteristic and very abundant detail...contribution to metamorphicbasementof this metal province(Leh- these granites(MeNutt et al., 1975; Shibataet...lower than the Sr ratiosof the metamorphic southern Peru and in the Cordillera Real are <0.2 country rocks |  | | Journal (article/letter/editorial) | | contain F ÂŁ 4.66 and F ÂŁ 4.34 wt % respectively. Tourmaline has features intermediate between those of late-magmatic...peraluminous two-mica rhyolites and granites of Alaska, Peru, South-West England, Portugal, Czech Republic, Mongolia...granite (this work), the widespread occurrence of tourmaline â biotite assemblages (Cavarret ta & Puxeddu...apatite, ilmenite, pyrite, rutile and zircon. Tourmaline occurs in pockets and veins. Muscovite shows... Two-mica F â Li â B-rich monzogranite apophysis 93 Tourmaline, pleochroic from khaki brown to greenish brown |  | | Journal (article/letter/editorial) | | B-enriched natural rhyolite obsidian, macusanitefrom Macusani, Peru, has also been determined. The viscosity of...(1985) Phase relations of tourmaline leucogranitesand the significanceof tourmaline in silicic magmas.Journalof...gramte-pegmatite systems:Experimental resultswith Macusani glassat 200 MPa. Contributions to Mineralogy and...L. (1989) Vapor-undersaturatedexperiments with Macusani glass + HrO at 200 MPa, and DINGWELL ET AL.:...M., and Manning, D.A.C. (1984) Petrogenesisof tourmaline granites and topaz granites; the contribution |  | Schatz, Oliver J., DolejĹĄ, David, Stix, John, Williams-Jones, Anthony E., Layne, Graham D. (2004) Partitioning of boron among melt, brine and vapor in the system haplograniteâH2OâNaCl at 800 °C and 100 MPa. Chemical Geology, 210 (1) 135-147 doi:10.1016/j.chemgeo.2004.06.007 | Journal (article/letter/editorial) | | Boron partitioning; Vapor; Brine; Haplogranite; Tourmaline; SIMS 1. Introduction Granitic magmas commonly...Chemical Geology 210 (2004) 135â147 magmas (i.e., Macusani glass â Pichavant et al., 1987), its behavior...phases (e.g., Shearer et al., 1984, 1986), yet tourmaline is also an important accessory phase in many...ppm represents about half the value reported for Macusani glass (0.62 wt.% B2O3 Gold capsules 1.1 cm long...(1981), London et al. (1988) used peraluminous Macusani rhyolite obsidian, with elevated levels of boron |  | | Journal (article/letter/editorial) | | phosphates, 0.4% beryl, 0.6% pollucite, and 0.5% of tourmaline (Stilling et al., 2006); hence, it is granitic...of some components.â Table 1 Compositions of Macusani obsidian, Tanco pegmatite, and melt saturation...16% 8% 7% Beryl Petalite Rubicline Pollucite Tourmaline Topaz Spessartine Mn-columbite Mn-tantalite ...(Stewart, 1978), pollucite (London et al., 1998); tourmaline (Wolf and London, 1997); topaz (London et al...peraluminous haplogranite, and a melt of the Macusani obsidian, Peru (Fig. 5 of Evensen et al., 1999). Beryl |  | | Journal (article/letter/editorial) | | CE MPaH2O. One series of experiments used the Macusani obsidian (MAC) to reassess the Î11BM-V values...Boron, boron isotopes, isotope fractionation, tourmaline, pegmatites 2 ACCEPTED MANUSCRIPT 1. Introduction...abundant B-rich mineral in the continental crust is tourmaline (tur) (Grew, 1996; London et al., 1996); however...(ms), which is volumetrically more abundant than tourmaline, constitutes a large reservoir of B as well (London...materials have focused on the compositions of tourmaline and micas (Maner and London, 2017; Marschall |  | | Journal (article/letter/editorial) | | 53 wt% P,Os) pet-aluminousobsidian glassfrom Macusani, Peru (PICHAVANT et al., 1987, 1988b) was used instead...aluminous melt commotions. The andalusites from Macusani, Peru have a composition close to the Al$SiOsendmember...Ap=apatita; All experiments And=andalusite; Mac=Macusani And glass; Ca-P-Glass=glass are of dissolution...calculate A/CNK, except for experiments with the Macusani glass (A/CNK = molar A1/(2Ca + K + Na + Li), Li...KV, 20 nA, 30 set on peak, and I5 background, Macusani glass as a standard, and using the PAP correction |  | | Journal (article/letter/editorial) | | with inclusions and a surface druse of black tourmaline, 7.5 Ă 3.2 Ă 3.0 cm, Shigar Valley, Pakistan;...albite, 26 Ă 17 Ă 13 cm, Kunar Valley, Nuristan Province, Afghanistan; Joe Budd photo, courtesy of The...March/April 2015 143 1200 P = 200 MPa H2O Macusani obsidian 1000 Be in melt, ppm Figure 6. Solubility-saturation...excess alumina added (peraluminous), and in the Macusani obsidian, which is a close compositional analogue...with beryl; and (3) a rhyolite obsidian from Macusani, Peru (London, Morgan, and Hervig 1989), whose composition |  | | Journal (article/letter/editorial) | | Springer-Verlag 1989 Vapor-undersaturated experiments with Macusani glass + H20 at 200 MPa, and the internal differentiation...Vapor-undersaturated fractional crystallization experiments with Macusani glass (macusanite), a peraluminous rhyolite obsidian...crystallization at 200 M P a for the Macusani rhyolite obsidian (macusanite) from SE Peru (Barnes et al. 1970; Pichavant...Time-temperaturepaths Experimental methodology Macusani glass (macusanite) was ground under ethanol to...to remove phenocryst-rich portions. The ground Macusani glass was loaded and sealed in Pt tubing with |  | | Journal (article/letter/editorial) | | example of coexisting monazite and obsidian from Macusani, Peru. The solubility of monazite can be used as... This point is clearly demonstrated in the Macusani (Peru) glasses. These peraluminous obsidian glasses...analyses and structural formula of monazite from the Macusani glass Crystal No. ThO2 P205 Y203 CaO UO2 Gd203...properties problem, but the fractionation measured the Macusani glass-monazite pairs have been used to build a...temperature ofmonazite/melt equilibrium in the Macusani glass. The temperature taken is, for internal |
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