 | 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...sociated with stronglyperaluminous cordierite-biotite monzogranite stocksof mid-Tertiaryage;(4) Sn,W...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 |  | Kontak, D. J., Clark, Alan H., Farrar, E., Archibald, D. A., Baadsgaard, H. (1987) Geochronological data for Tertiary granites of the Southeast Peru segment of the Central Andean tin belt. Economic Geology, 82 (6) 1611-1618 doi:10.2113/gsecongeo.82.6.1611 | Journal (article/letter/editorial) | | CENTRAL GRANITES ANDEAN OF THE SOUTHEAST TIN BELT PERU D. J. KONTAK,ø A. H. CLARK,E. FARRAR,D. A. ARCHIBALD...markedlyporphyritic,with alkali feldspar, and lessprominently,biotite, quartz, and cordieritc asmegacrystic phases.The...intrusions in the Cordillera and Precordillera de Carabaya(Fig. 2), in additionto the first Rb-Sr iso- shipsare...Table 1. All of the dated intrusive rocks are biotite mon- Mineralization Of the above bodies, only...undated Quenamari intrusion was obtained on magmatic biotite from a surfaceoutcrop in the largest exposedportion |  | | Journal (article/letter/editorial) | | 2003 Glass-rich, Cordierite±Biotite Rhyodacite, Valle Ninahuisa, Puno, SE Peru: Petrological Evidence for...cordierite ^ biotite rhyodacite exposed in the Central Andean Inner Arc of southeastern Peru, is interpreted...undevitrified glass, phenocrysts of plagioclase, biotite, Fe-cordierite and rare quartz and sanidine, and...zircon, ilmenite and monazite. Both plagioclase and biotite phenocrysts exhibit complex zonation and convincing...hsandema@nrcan.gc.ca that of the subsequent, 7^17 Ma, Macusani Formation ash-flows, and other strongly peraluminous |  | | 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 –...bimodal mica population, comprising phlogopite and biotite, as well as complexly zoned, sieve-textured plagioclase...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; |  | 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) | | 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 |  | 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) | | 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...altered and embayed crystals of quartz, feldspar, biotite with minor coarsegrained melt- and fluid-inclusion...ofpyroxene coronas on quartz; and (5) textures within biotite suggestive of its incipient breakdown. The lack...Minastira, Peru. Introduction THE Cordillera de Carabaya segment of the Cordillera Oriental of SE Peru (Fig |  | | 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...(quartz, sanidine 0 r 6 9 _ 7 5 , plagioelase, biotite, muscovite and andalusite (both coexisting in the...is essentially constant throughout the entire Macusani field. Two distinct generations of plagioclase |  | | Journal (article/letter/editorial) | | Al-rich ferromagnesian minerals (AlT- and AlVI-rich biotite, almandine–spessartine garnet) and sillimanite...melting of metapelitic sources (e.g., typical biotite-muscovite gneisses from the outcropping S Puna...fractionation of plagioclase, K-feldspar, quartz and biotite, with minor magnetite and apatite from the hybrid...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;...potassic feldspar, biotite, spinel. Distribution: From near Macusani, Puno Department, Peru. Name: In honor...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...melting of F-muscovite combined with incipient biotite dehydration. Fluid-absent melting o f F-rich muscovite |  | | 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) | | Magma Mixing in the Antauta Subvolcanic Center, Peru: Implications for the Origin of Nelsonite and Iron...hypabyssal complex of the Picotani Group, Puno, southeastern Peru. Magma mixing generated intermediate, andesitic...component of the Antauta Complex, Puno Department, southeastern Peru (Fig. 1; lat 14°17'17"S; long 70°18°44"W)...“peraluminous S-type” (Patiño-Douce, 1999) cordierite-biotite monzogranites, are directly associated with a comparably...ANTAUTA, PERU 12° S ´W 30 ´W Limbani 68° Study area 200 km 14° Sandia Bolivia Peru 16 Ollachea |  | | 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 |  | Harlaux, Matthieu, Kouzmanov, Kalin, Gialli, Stefano, Laurent, Oscar, Rielli, Andrea, Dini, Andrea, Chauvet, Alain, Menzies, Andrew, Kalinaj, Miroslav, Fontboté, Lluís (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) | | The World-Class San Rafael Tin (-Copper) Deposit, Peru Matthieu Harlaux,1,†,* 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...Miocene Sn-W ± Cu-Zn-Pb-Ag deposits in southeast Peru. Rare earth †Corresponding author: mharlaux@unr...(-Cu) deposit (central Andean tin belt, southeast Peru) that represents an exceptionally large and rich |  | | 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...phenocrysts of quartz, feldspars, and biotite (both feldspars and biotite are altered to fine-grained quar... 50 vol percent feldspars, and 15 vol percent biotite. Accessory constituents are zircon, apatite, and |  | 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...the transparent natural glass from Paucartambo, Peru, was a tektite, although it contained crystals of...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 |  | Spikings, R., Reitsma, M.J., Boekhout, F., Mišković, A., Ulianov, A., Chiaradia, M., Gerdes, A., Schaltegger, U. (2016) Characterisation of Triassic rifting in Peru and implications for the early disassembly of western Pangaea. Gondwana Research, 35. 124-143 doi:10.1016/j.gr.2016.02.008 | Journal (article/letter/editorial) | | Characterization of Triassic Rifting in Peru and implications for the early disassembly of western...Schaltegger, U., Characterization of Triassic Rifting in Peru and implications for the early disassembly of western...MANUSCRIPT Characterization of Triassic Rifting in Peru and implications for the early disassembly of western...and tectonic setting of the Mitu Rift of southern Peru. The Peruvian Mitu Rift is compared with other Triassic...Proto-Caribbean and Central Atlantic oceans. The Mitu Rift (Peru) was active during ~245 – 240 to ~220 Ma and was |  | | Journal (article/letter/editorial) | | Partitioning of fluorine and chlorine between biotite and granitic melt: experimental calibration at...partitioning of fluorine and chlorine between biotite (Bt) and melt. Over this temperature interval,...phase. Partition coefficients for fluorine between biotite and glass (DFBt/melt) show a strong dependence...experiments vary inversely with Mg′. The Al-content of biotite does not vary with the aluminum saturation index...[Fe2+OH])1). This behavior is evident in magmatic biotite from a zoned peraluminous rhyolite complex near |  | | Journal (article/letter/editorial) | | erupted at 4.7 Ma in the eastern Basin and Range province (Lindsey, niently divided into two units, a pyroclastic...pyroclastic Air fall llflll Latiteanddacite of biotite, plagioclase,sanidine, topaz, and quartz were 1""''ldeposits...to 50 cm thick, and these often clase, quartz, biotite, and topaz in decreasingorder of comprise up to...the tephra are um feldspar, plagioclase,quartz, biotite, and topaz, typxenoliths of white quartzite from...Honeycomb Hills. Megacrystsof topaz, sanidine, and biotite are common Based on stratigraphic sections for |  | | Journal (article/letter/editorial) | | CENOZOIC VOLCANISM AND TECTONISM IN T H E ANDES OF PERU Donald C. NOBLE Mackay School of Mines, University...(USA) and Cia. de Minas Buenaventura, S.A., Lima (Peru] Edwin H. M c K E E U.S. Geological Survey, Menlo...major volcanic activity in central and southern Peru, northern Chile, and adjacent areas during the Early...aL, Volcanism and tectonism in the A n d e s o f Peru Pacific basin [3, 7]. Of particular importance...Castrovirryena in Huancavelica Department, central Peru (Fig. 1) [16,17]. This sequence is composed mainly |  | | Journal (article/letter/editorial) | | deposits. They have a limited compositional range (biotite<10%) and display a strong increase of their peraluminosity...occurrences are the Cenozoic ignimbritic tuffs of Macusani in Peru (Arribas and Figueroa 1985). Peralkaline granites...exemplified by the mid-European Variscan uranium province, which extends over more than 2,000 km from Spain...metalogenia de las mineralizaciones uraniferas de Macusani, Puno (Peru). Proc. IAEA Vienna, Symp. Uranium deposits...late-tectonic granitic pegmatites, south west Grenville Province, Canada. Ore Geol Rev 11:197–227 Leroy J, George-Aniel |  | | Journal (article/letter/editorial) | | aluminosilicates. Equilibria among tourmaline, biotite, and cordierite (or garnet) in granitic magmas...fluxing components through (1) equilibria among biotite, garnet, LiAl-silicates and their corresponding...white and dark micas (nominally muscovite and biotite), alkali feldspars, and the peraluminous magma...aluminous metasedimentary protoliths (quartz–albite–biotite–muscovite±cordierite, andalusite, corundum, spinel)...(1996)]. In addition to the assemblage of (1) above, biotite reacted and equilibrated continuously from the |  | | Journal (article/letter/editorial) | | southern extension of the Altiplano of southern Peru, Bolivia, and northern Chile, is a high plateau..."inner magmatic arc" is a belt that extends from Peru through the Eastern Cordillera on the ea'stern margin...primarily composed of quartz-monzonite containing biotite, hornblende, occasional pyroxene, and accessory...However, a new 40 Ar/ 39 Ar age of about 7 Ma for biotite from a flank unit at Cerro Ratones (Vandervoort... 1979) are dacites and andesites that contain biotite, hornblende, and occasional clinopyroxene as mafic |
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