 | | Journal (article/letter/editorial) | | Cordierite±Biotite Rhyodacite, Valle Ninahuisa, Puno, SE Peru: Petrological Evidence for Hybridization of...in the Central Andean Inner Arc of southeastern Peru, is interpreted as a pristine analogue of a Lachlan-type...and rare quartz and sanidine, and accessory sillimanite, apatite, zircon, ilmenite and monazite. Both...hsandema@nrcan.gc.ca that of the subsequent, 7^17 Ma, Macusani Formation ash-flows, and other strongly peraluminous...granites and rhyolites, including the well-known Macusani rhyolites. Moreover, a nearby, closely allied |  | Kontak, Daniel J., Cumming, George L., Krstic, Dragan, Clark, Alan H., Farrar, Edward (1990) Isotopic composition of lead in ore deposits of the Cordillera Oriental, southeastern Peru. Economic Geology, 85 (7) 1584-1603 doi:10.2113/gsecongeo.85.7.1584 | Journal (article/letter/editorial) | | Depositsof the Cordillera Oriental, Southeastern Peru DANIEL J. KONTAK, Departmentof Minesand Energy,P...metallicmineralizationpresentin the Cordillera de Carabaya,southeastern Peru,segmentof the centralAndeanInnerArc domain...regionasa whole. A comparison of the southeastern Peru ore lead datawith thoseavailablefor the metallo-...genically similarnorthwestern Bolivian Sn-W-Ag province reveals broadlysimilarresults for Tertiary$n polymetallic... Pb1SOTOPE COMPOSITION, CORDILLERA ORIENTAL, SOUTHEASTERN PERU 1585 (Audebaud andAmosse,1981; Clarket al., 1984) |  | | Journal (article/letter/editorial) | | the Cayconi volcanic field, Cordillera de Carabaya, SE Peru Hamish A. Sandeman *, Alan H. Clark Department...The Cayconi district of the Cordillera de Carabaya, SE Peru, exposes a remnant of an upper Oligocene –...in the Oligo-Miocene rocks of the Cordillera de Carabaya, suggesting that the S-type rocks in this area...2004 Elsevier B.V. All rights reserved. Keywords: Peru; Inner arc; S-type magmas; Potassic mafic magmas;...et al., 1984; 1990a), a long-lived petrogenetic province distinct in numerous respects from the contemporaneously |  | 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) | | 1997 The Minastira peraluminous granite, Puno, southeastern Peru: a quenched, hypabyssal intrusion recording...fine-grained granitic rock in the Cordillera Oriental of SE Peru, has preserved textures indicative of a history...Minastira, Peru. Introduction THE Cordillera de Carabaya segment of the Cordillera Oriental of SE Peru (Fig... olivia 14 ~ Limbani Pluton 0' ~ Jurassic Macusani Syenite ~ Triassic Granites ~ Permian Mitu...of the study-area (Cordillera de Carabaya) in the Central Andes of Peru with the broad lithotectonic subdivisions |  | | Journal (article/letter/editorial) | | Oligocene-Miocene Crucero Supergroup of the southern Peru Inner Arc domain provide a previously unavailable...zone separating the sites of anatexis in southern Peru and northern Bolivia. This is inferred to represent...subdivisions of the Andean orogenic belt in southern Peru and contiguous northern Bolivia. The approximate...westerly of these constitutes the 6000- to 8000-m-deep Peru-Chile trench and the forearc slope (Llanuras Costaneras)...western Bolivia, but narrows markedly in southeastern Peru, where an extensive 4000- to 5000-m-high mountainous |  | | 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...(both coexisting in the entire volcanic field), sillimanite, sch6rl-rich tourmaline, cordierite-type phases...is essentially constant throughout the entire Macusani field. Two distinct generations of plagioclase |  | Clark, Alan H., Palma, Vicente V., Archibald, Douglas A., Farrar, Edward, Arenas F., Mario J., Robertson, Ronald C. R. (1983) Occurrence and age of tin mineralization in the Cordillera Oriental, southern Peru. Economic Geology, 78 (3) 514-520 doi:10.2113/gsecongeo.78.3.514 | Journal (article/letter/editorial) | | OF TIN ORIENTAL, MINERALIZATION SOUTHERN IN PERU ALAN H. CLARK, VICENTE V. PALMA, DOUGLAS A. ARCHIBALD...polymetalliclode systems underdevelopmentin the Cordillerade Carabaya. The occurrence of significantamountsof tin in...tin-polymetallicsubprovinceon the 1:2,500,000metallogeneticmap of Peru (Bellido northeastern shore of Lake Titicaca in...the sub-Andeanrangesand tensioninto southeastern Peru is poorlydefined(Pe- the headwaters of the Rio Inambarl...Carabayadistrict(lat 14ø to 14ø$0'S dillera de Carabaya,at altitudesof up to 5,000 m. long70ø to 70ø45'W:Fig |  | | Journal (article/letter/editorial) | | ignimbrite is a strongly peraluminous (SP), sillimanite, garnet-bearing silicic rhyolite which erupted...AlVI-rich biotite, almandine–spessartine garnet) and sillimanite, as well as accessory zircon and monazite. Textural...magnetite and apatite from the hybrid magma. Sillimanite in the Coyaguayma rhyolite is interpreted as...with SP characteristics are scarce in this vast province (Fig. 1), and the same is true for mafic magmas...Cordillera of Bolivia and Peru (Kari Kari ignimbrite, Schneider, 1987; Macusani volcanics, Pichavant et |  | | Report (issue) | | = 5.454(1) Z = [1] X-ray Powder Pattern: Macusani, Peru. 3.441 (100), 1.870 (25), 4.442 (13), 1.605...(1) 77.29 16.57 0.64 4.93 0.0 0.57 100.0 (1) Macusani, Peru; by electron microprobe and laser spectrograph;...andalusite, sillimanite, potassic feldspar, biotite, spinel. Distribution: From near Macusani, Puno Department...Department, Peru. Name: In honor of Professor Virgil Everett Barnes (1903{ ), University of Texas, Austin...lithium aluminum silicate mineral from the Macusani glass, Peru. Amer. Mineral., 63, 461{465. All rights |  | 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 |  | | Journal (article/letter/editorial) | | and Triassic Sn–W–(Ag-base metal) metallogenic province, commonly referred to as the Bolivian tin belt...proposal include: (1) the coincidence of the tin province and the Inner Arc in a marked bhumpQ in the Andean...tectonic indentation; (2) the symmetry of the tin province with respect to the Bolivian orocline, the axis...Central Andean tin belt is an elongated metallogenic province, confined to the Eastern Cordillera of the Andean...extending for more than 1000 km from southeastern Peru, through Bolivia, up to northern Argentina (Fig |  | | 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 |  | | Journal (article/letter/editorial) | | Shallow Marine Deposits, 443. VARLEY (E. R.), Sillimanite, 672. WHITE (J. E.), Seismic waves, 671. WILSOn...Di/co Abuja, Nassawara Xigeria, stolzite, 995. Province, DIMES (F. G.), see JOBBINS (E. A.), 881. Diopside...phlogopite, sillimanite, 662. ELLIOTT (C. J.) & Moss (A. A.), Natural glass from Macusani, Peru, 423. Emmons...basalts, New South Wales, anal., 847; natural, Macusani, Peru, anal., comparison with tektites, 423. GLASSER...metamorphic grade, 306. Hounslow mine, Koegas, Cape Province, South Africa, crocidolite, 291. 1178 ALPHABETICAL |  | BARNES, VIRGIL E., EDWARDS, GEORGE, McLAUGHLIN, W. A., FRIEDMAN, IRVING, JOENSUU, OIVA (1970) Macusanite Occurrence, Age, and Composition, Macusani, Peru. Geological Society of America Bulletin, 81 (5) 1539 doi:10.1130/0016-7606(1970)81[1539:moaacm]2.0.co;2 | Journal (article/letter/editorial) | | Macusanite Occurrence, Age, and Composition, Macusani, Peru ABSTRACT Macusanite, originally believed to...is shown to be related to sillar of the Macusani region, Peru. K-Ar measurements establish identical Pliocene...Paucartambo, Peru, was a tektite, although it contained crystals of andalusite, sillimanite, wollastonite...Paucartambo glass. Heide (1936) described the Macusani glass. Martin (1934) and Martin and de Sitter-Koomans...igneous event it might belong, Barnes visited the Macusani occurrence in July 1961. He also visited the locality |  | | Journal (article/letter/editorial) | | volcanic rocks focused mostly on the field near Macusani, Peru, at the northern end of the tin belt (Barnes...American Museum of Natural History, New York; Macusani vitrophyre containing 0·3 wt % H2O) 602 MORGAN...(bounded by dashed lines) and the locations of the Macusani (MAC) and Los Frailles (LF) volcanic fields. ...replacement by sodic plagioclase (Fig. 2f ). Sillimanite is found in all rock types as fine-grained acicular...and sanidine, and in andalusite from the AR. Sillimanite also is found as euhedral needles in the groundmass |  | | Journal (article/letter/editorial) | | newlithium aluminumsilicatemineralfrom the Macusaniglass,Peru BnveNM. FnsNcs 7408 WyndaleLqne,CheuyChase,Maryland...found in volcanic glassof unusualcompositionfrom Macusani,Peru.It is the only naturally-occurring representativeof...Institution,Washington,D. C. underMeteoriteColnear Macusani, Peru (latitude l4oS, longitude lectionnumberNMNH...commonlyobservedon the occursas a rare to commonphasein the Macusani crystalsof quartz(Figs.2, 3), K-feldspar,biotite...quartz fragment overgrown by fibrous virgilite in Macusani glass filled with small euhedral virgilite crystals |  | | Journal (article/letter/editorial) | | during magma ascent. Anhedral andalusite and rare sillimanite with hercynite are the aluminarich minerals....peraluminous two-mica rhyolites and granites of Alaska, Peru, South-West England, Portugal, Czech Republic, Mongolia...al. 1987). Andalusite, cordierite and locally sillimanite and hercynite are also present. Other accessory...andalusite [0.6 mm]; g) hercynite associated with sillimanite needles, possibly derived from contact metamorphism...intermediate between upper-staurolite and lower-sillimanite zones, corresponds to temperatures of 550Ê – |  | Lehmann, B., Dietrich, A., Heinhorst, J., Métrich, 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) | | 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...mine (Amlot 1998), is the San Rafael mine in SE Peru which works a vein system in association with a...fractionated tus and obsidian glasses of the Macusani volcanic ®eld, SE Peru (Fig. 3). The trends shown in Fig. |  | | Journal (article/letter/editorial) | | lithium-rich, high-silica volcanic rocks (e.g., the Macusani, Peru, volcanic glass: French et aI., 1978). Introduction...natural analogue, virgilite, from the Macusani volcanic glass, Peru (French et aI., 1978). The two-phase...a primary liquidus phase for the near-surface Macusani magma. The results of this study appear to confirm...field boundary for the pre-eruption magma at the Macusani volcanic center (cf. Noble et aI., 1984). This...field of sillimanite (Holdaway, 1971), and sillimanite has been reported from the Macusani glass (Linck |  | | 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...make up a significant 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...Granites in the central and eastern Hodgkinson Province 2. Regional geology The geology of north Queensland |  | Hofstra, A. H., Todorov, T. I., Mercer, C. N., Adams, D. T., Marsh, E. E. (2013) Silicate Melt Inclusion Evidence for Extreme Pre-eruptive Enrichment and Post-eruptive Depletion of Lithium in Silicic Volcanic Rocks of the Western United States: Implications for the Origin of Lithium-Rich Brines. Economic Geology, 108 (7) 1691-1701 doi:10.2113/econgeo.108.7.1691 | Journal (article/letter/editorial) | | extensional tectonics that produced the Basin and Range province and Rio Grande rift, an evolving pattern of closed...pegmatite (Congdon and Nash, 1991). Obsidian from Macusani, Peru, has the highest lithium abundance yet reported—of...SILICIC VOLCANIC ROCKS, WESTERN USA 10,000 Macusani, Peru 3400 ppm Lithium ppm 1,000 90th 100 50th...extensional tectonics that produced the Basin and Range province and the Rio Grande rift. This setting also produced...Rio Grande Rift Rio Grande Rift Basin and Range province Rift State New Mexico Colorado Utah Utah New Mexico |  | | Journal (article/letter/editorial) | | Volume 87, pages 433–444, 2002 Andalusite-sillimanite replacement (Mazarrón, SE Spain): A microstructural...SE Spain, dacitic lavas of the Neogene Volcanic Province contain numerous xenocrysts and xenoliths with...transformation to both fibrolite and coarse sillimanite. At the onset of replacement, andalusite dissolves...progress, fibrolite needles coalesce into coarser sillimanite prisms, and direct topotactic replacement of...crystallographic orientation of andalusite and sillimanite obtained from TEM investigation deviates slightly |  | Ericksen, G.E., Smith, R.L., Luedke, R.G., Flores, Mario, Espinosa, Alfredo, Urquidi, Fernando B., Saravia, Fernando (1985) Preliminary geochemical study of ash-flow tuffs in the Morococala and Los Frailes volcanic fields, central Bolivian tin belt. Open-File Report Vol. 1985 (85-258) US Geological Survey doi:10.3133/ofr85258 | Report (issue) | | ash-flow tuffs from the western U. S. and southern Peru ................................ 1 1 4 5 6 8 ABSTRACT...California (Hildreth, 1979) and the tuffs of Macusani of southern Peru (Noble and others, 1984). The Bishop Tuff...zoning in the parent magma chamber. The tuffs of Macusani were selected for comparison because of their...figure 3 have generally overlapping ranges. The Macusani tuffs (fig. 3), in contrast to the tuffs from...lL I I I AE AL I I AE Lu Mean value of Macusani tuffs Mean value of Bishop Tuff [early (E) and |  | | Journal (article/letter/editorial) | | reyerite, 1. Sithean Sluaigh, Argyllshire: mullite, sillimanite, 810. Strathdon, Aberdeenshire : biotite, 1080...Diko Abuja, Nassawara Nigeria: stolzite, 995. province, Congo Bufumbira: leucite, 596. Mt. Misoba, Maniema...ilmenite, 118. Manavalas ilmenite, 118. Cape Province Hounslow mine, Koegas : crocidolite, 291. Koegas:...molybdenite, 785. JoSo de Fogo mine: lazulite, 427. Peru Macusani: natural glass, 423. TOPOGRAPHICAL INDEX |
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