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News Article | December 28, 2016
Site: www.marketwired.com

VANCOUVER, BRITISH COLUMBIA--(Marketwired - Dec. 28, 2016) - Revelo Resources Corp. ("Revelo" or the "Company") (TSX VENTURE:RVL) announces that its joint venture partner, Minera Newmont (Chile) Ltda. ("Newmont"), a subsidiary of Newmont Mining Corporation (NYSE:NEM), has completed the drilling campaign at the Montezuma copper-gold project in northern Chile (the "Project"), previously announced (see news release dated October 4th, 2016). Newmont drilled a total of 8,591 metres in 20 holes and tested a total of 10 targets. Based on a recent site visit, and a review of the data provided by Newmont thus far, no significant results have been reported to date from the drilling carried out. Some analytical results remain to be reported. Further updates and information will be provided in the early new year. The Project comprises approximately 45,000 Ha of 100% owned tenements. It is located along the main porphyry copper belt in northern Chile, commonly known as the Domeyko Cordillera, directly along the main West Fissure Fault System that controls several world-class copper deposits in the area, midway between the giant Chuquicamata (Codelco) and Centinela (Antofagasta Minerals) copper mining districts. The Project is centred approximately 20 km south of the important mining town of Calama. Access to the Project is excellent via a good quality dirt road leading off from paved roads around Calama, and altitudes vary from approximately 2,600 m to around 3,100 m. The Project is currently owned 51% by Newmont and 49% by Revelo. Newmont has elected to pursue a further 14% (to 65%), and has an option to earn up to 75% of the Project, according to the Venture Agreement ("Agreement") (see news releases dated January 20, 2014, February 23, 2015, and May 17, 2016). For further details, including maps, of the Montezuma Project and the Agreement please refer to the Montezuma Project page on Revelo's website (http://www.reveloresources.com/projects/montezuma). Revelo is a Prospect Generator that has consolidated an outstanding portfolio of 22 projects prospective for copper, gold and silver located along proven mineral belts in one of the world's top mining jurisdictions - Chile. Several targets are ready for drill testing within the portfolio, and two projects are subject to option and joint venture agreements with subsidiaries of Newmont (Montezuma Project) and Austral Gold (San Guillermo Project). As part of its portfolio, Revelo retains a 2% royalty interest (currently non-producing) in the Victoria Project, an important copper-gold-silver exploration project, and it is developing a nascent royalty portfolio. Revelo's total exposure to mineral tenements in northern Chile is around 300,000 hectares, of which about 100,000 hectares (3 projects) are subject to 3rd party exploration expenditures. Revelo has a goal of building a sustainable exploration business focused on securing prospective land along the prolific mineral belts of northern Chile, and by implementing effective exploration and capital management strategies to grow, advance and de-risk its portfolio to provide shareholders with multiple opportunities for exploration success. Revelo is actively looking for partners to advance the projects within its portfolio. Revelo is a Canadian company and is listed on the TSX Venture Exchange (TSX VENTURE:RVL). For more information, please visit Revelo's website at www.reveloresources.com. ON BEHALF OF THE BOARD Neither the TSX Venture Exchange nor the Investment Industry Regulatory Organization of Canada accepts responsibility for the adequacy or accuracy of this release. This news release contains certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical fact, that address events or developments that Revelo expects to occur, are forward-looking statements. Forward-looking statements are statements that are not historical facts and are generally, but not always, identified by the words "expects", "plans", "anticipates", "believes", "intends", "estimates", "projects", "potential", "indicate" and similar expressions, or that events or conditions "will", "would", "may", "could" or "should" occur. Although Revelo believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results may differ materially from those in forward-looking statements.


Alvarez J.,University of Chile | Mpodozis C.,Antofagasta Minerals | Blanco-Quintero I.,University of Los Andes, Colombia | Blanco-Quintero I.,University of Granada | And 4 more authors.
Journal of South American Earth Sciences | Year: 2013

The La Pampa Gneisses are an enclave of orthogneisses emplaced within late Paleozoic to Triassic granitoids of the Chollay Batholith, in the Cordillera Frontal, to the east of Vallenar. Previous geochronological data (a Rb/Sr "errorchron" of 415±4Ma) allowed to some authors to suggest that these rocks were part of the Chilenia Terrane accreted to Gondwana during the Middle Devonian (. ca. 390Ma). New petrographic, chemical and geothermobarometric studies, together with U-Pb geochronological data show that the protolith of the La Pampa Gneisses derives from peraluminous tonalites emplaced during the Pennsylvanian at 306.5±1.8Ma, ruling out the hypothesis considering these rocks as remnant of the pre-collisional Chilenia basement. The tonalites were metamorphosed between 5.06 and 5.58kbar and 709-779°C during the middle Permian (267.6±2.1Ma), possibly in conjunction with the San Rafael tectonic event and the emplacement of the oldest granitoids of the Chollay Batholith. A new intrusive episode occurred at ca. 240Ma, followed by exhumation and cooling during a regional Triassic extensional episode. © 2013 Elsevier Ltd.


Kay S.M.,Cornell University | Mpodozis C.,Antofagasta Minerals | Gardeweg M.,AURUM Consultores
Geological Society Special Publication | Year: 2014

The Central Andean margin, where the name andesite originated, is the type locality for arc andesites erupted through thick continental crust. The <25 Ma mid to high K2O andesites erupted from 25.58S to 28.28S exhibit a large variation in trace element and isotopic ratios, reflecting formation over an evolving slab, a crust thickening to 65-75 kmand a frontal arc that migrated c. 45 km eastward at 8-3 Ma. Andesites at 28-26.88S have the most variable and extreme heavy rare earth element (REE), high field strength element (HFSE) and Ba/La ratios and wt% Na2O, with the highest values in those erupted as the frontal arc migrated and the slab shallowed to the south. The required garnet-bearing, feldspar-free residue is generated in both the thick crust and the mantle wedge, into which crust was injected in a peak of forearc subduction erosion as the arc migrated. Andesites at 25.5-26.88S, east of the Puna plateau under which the slab shallowed at 18-7 Ma and then steepened as lithospheric delamination occurred, generally lack extreme REE and HFSE ratios. Their upper crust-like features reflect eruption in a mixed stress regime and incorporation of westward-flowing radiogenic crust from a region of extensive deep crustal melting to the east.


Herve F.,Andrés Bello University | Herve F.,University of Chile | Fanning C.M.,Australian National University | Calderon M.,University of Chile | Mpodozis C.,Antofagasta Minerals
Lithos | Year: 2014

One of the major geological units of the Main Andean Range (Frontal Cordillera) of north-central Chile is a group of composite and heterochronous late Paleozoic-early Mesozoic batholiths that extends for 500km roughly NS along from 26° to 31°S. Ten new SHRIMP zircon crystallization ages together with 11 recently published U-Pb zircon ages by other authors indicate an episodic intrusion history which can be divided in 4 groups: Mississippian (earliest Carboniferous; 330-326Ma), Cisuralian (earliest Permian; 301-284Ma), latest Permian to Middle Triassic (264-242Ma) and Late Triassic (225-215Ma). Volcanic rocks in the area span a similar time. Lu-Hf and O isotopic systematics in zircon grains from eight of the plutonic rocks indicate the magma source areas have contributed variable amounts of crustal and mantle components. Zircon δ18O values evolve from crustal values (+7‰) in the earliest Permian intrusives to mantle values in the latest Permian to Upper Triassic, including evidence for likely hydrothermal alteration of the source (+4‰). Zircon εHf values vary in a good linear correlation with the δ18O isotopes, from -6 to 0 in rocks older than 270Ma increasing to+2 to +7 from Lower to Upper Triassic (250 to 215Ma). The petrogenetic constraints indicated by these values, suggest that the influence of magma sources varied with time from predominantly crustal to mantle like. In accord with the regional tectonic models, the earliest Permian rocks were generated in a subduction-related magmatic arc, which varied towards an extension-related environment in the latest Permian and Triassic. © 2013.


Alvarez J.,University of Chile | Mpodozis C.,Antofagasta Minerals | Arriagada C.,University of Chile | Astini R.,National University of Cordoba | And 4 more authors.
Journal of South American Earth Sciences | Year: 2011

During the Paleozoic the Andean basement of central Chile and Argentina grew westwards by the amalgamation of diverse tectonostratigraphic terranes some of them derived from Laurentia. The last to be accreted, in the Devonian, corresponds to the hypothetical Chilenia terrane. However, direct evidences about the nature of its basement are scarce because volcanics and intrusives associated to a Late Paleozoic arc and the Choiyoi Large Igneous Province concealed almost all older geological units. Indirect evidences about the nature of Chilenia can be obtained from the examination of the detrital zircon age populations in late Paleozoic accretionary prisms formed after its collision along the Pacific margin of Gondwana which may have incorporated sediments derived from the erosion of the Chilenia basement. Zircon populations from three of these accretionary complexes, El Tránsito, Huasco and Choapa (north-central Chile, 28-32°S) include Ordovician (Famatinian), Cambrian (Pampean), Neoproterozoic (Brasiliano) and Mesoproterozoic (Grenvillian) zircons whose sources can be tracked to Gondwana. Nevertheless, the three complexes also include a very large subpopulation of zircons that cannot easily be traced to well-known Gondwana sources and that are derived from the erosion of late Neoproterozoic to Early Cambrian (580-530 Ma) magmatic/metamorphic sources, that possibly form a significant component of the Chilenia microcontinental basement. © 2011 Elsevier Ltd.


Martinez F.,University of Chile | Arriagada C.,University of Chile | Mpodozis C.,Antofagasta Minerals | Pena M.,University of Chile
Andean Geology | Year: 2012

The Triassic and Jurassic tectonic history of northern Chile has been dominated by extension, although clear evidence about the nature and geometry of the extensional basins and subsequent inversion structures has been adequately illustrated in only a few cases. In this contribution we present a structural study of the Lautaro Basin located at the western edge of the Frontal Cordillera in the Atacama region of northern Chile. The Lautaro Basin is a Jurassic half-graben, filled by at least 2,600 m of marine deposits of the Lautaro Formation and developed on top of, at least 2,000 m of Triassic volcanic successions of the La Ternera Formation, also accumulated during an earlier period of extensional deformation. Detailed field mapping and construction of a regional balanced cross-section, supported by good exposures along the Copiapó River valley, allow reconstruction of the structural style of both the Jurassic and Triassic extensional depocenters. New structural data have shown that the Lautaro Basin has a complex structural framework reflected in two major Mesozoic extensional periods, overprinted by Cenozoic inversion involving thin- and thick-skinned tectonics. Shortening was accommodated by a combination of inversion of pre-existing normal faults, buttresses, development of footwall short-cuts, and both thin and thick-skinned thrusting. New estimates of shortening are up to 13.1 km (30%), while Mesozoic extension is estimated to be 3 km (7%).


Goss A.R.,ExxonMobil | Kay S.M.,Cornell University | Mpodozis C.,Antofagasta Minerals
Journal of Petrology | Year: 2013

Glassy, plagioclase phenocryst-free, ̃7-3 Ma, andesitic lavas erupted at the southern end of the Andean Central Volcanic Zone (CVZ) at 27-28.5°S are argued to contain a component from continental crust that was incorporated into the sub-arc mantle in a major pulse of fore-arc subduction erosion that removed ̃50 km of fore-arc.The 7-3 Ma amphibole-bearing Pircas Negras (54-64% SiO2) and ̃7.7Ma pyroxene-bearing Dos Hermanos lavas erupted as the frontal arc was displaced some 50 km eastward over a developing bend in theWadati-Benioff zone at the northern margin of the Chilean-Pampean flat-slab region. Their chemistry differs from that of older Miocene and younger CVZ arc lavas in the region in having more pronounced high field strength element (La/Ta=40-100; Ba/Ta=800-2400) and heavy rare earth element (Sm/ γb̃4-9) depletions and an extreme adakitic-like character (̃600-1400 ppm Sr; Sr/γb̃400-1350). They also differ from older Miocene lavas in having higher 87Sr/86Sr and lower 143Nd/143Nd at the same wt % SiO2, while still showing trends with increasing wt%SiO2 that are best attributed to contamination in the ̃65-70 km thick crust. Overall, the trace element and isotopic features of the Pircas Negras lavas are consistent with modeling that attributes differences from older and younger lavas to enrichment of the arc mantle wedge by partial melts of tectonically eroded fore-arc crust, with the modeled eroded component being an outcrop and geophysically constrained mixture of 80-90% Jurassic mafic magmatic rocks and 10-20%silicic Paleozoic crust. An adakitic-type partial melt of this eroded crust generated at >2GPa, reacted with mantle peridotite, can explain the high Mg# values (50-61) and Cr (100-350 ppm) and Ni (40-70 ppm) contents in some 5-3 Ma Pircas Negras lavas. Pre-eruption temperatures over 1060°C, calculated from mineral thermometry and theMELTS program, permit these magmas to subsequently melt and react with overlying eclogitic crust. Magma storage in this thick crust then led to amphibole crystallization and suppression of plagioclase fractionation. Quartz and feldspar xenocrysts were acquired from locally pooled mid-crustal magmas and the silicic upper crustal basement during final rapid ascent to the surface. Given a constant arc-trench gap of 300 km over the last 10 Myr, ̃198 km3Myr-1km-1 of fore-arc crust needs to be removed by subduction erosion at 8-3 Ma to account for the material balance of the fore-arc crust. © The Author 2013. Published by Oxford University Press. All rights reserved.


Goss A.R.,University of Florida | Kay S.M.,Cornell University | Mpodozis C.,Antofagasta Minerals
Contributions to Mineralogy and Petrology | Year: 2011

The Pleistocene Incapillo Caldera and Dome Complex (5,570 m) marks the southernmost siliceous center of the Andean Central Volcanic Zone (~28°S), where the steeply dipping (~30°) segment of the subducting Nazca plate transitions into the Chilean "flatslab" to the south. The eruption of the Incapillo Caldera and Dome Complex began with a 3-1 Ma effusive phase characterized by ~40 rhyodacitic dome eruptions. This effusive phase was terminated by an explosive "caldera-forming" event at 0.51 Ma that produced the 14 km3 Incapillo ignimbrite. Distinctive and virtually identical chemical signatures of the domes and ignimbrites (SiO2 = 67-72 wt%; La/Yb = 37-56; Ba/La = 16-28; La/Ta = 30-50; 87Sr/86Sr = 0.70638-0. 70669; εNd = -4.2 to -4.6) indicate that all erupted lavas originated from the same magma chamber and that differentiation effects between units were minor. The strong HREE depletion (Sm/Yb = 6-8) that distinguishes Incapillo magmas from most of the large ignimbrites of the Altiplano-Puna plateau can be explained by the extent and degree of partial melting at lower crustal depths (>40 km) in the presence of garnet. At upper crustal depths, this high-pressure residual geochemical signature, also common to adjacent late Miocene/Pliocene Pircas Negras andesites, was partially overprinted by shallow-level assimilation and fractional crystallization processes. Energy-constrained AFC modeling suggests that incorporation of anatectic upper crustal melts into a fractionated "adakite-like" dacitic host best explains the petrogenesis of Incapillo magmas. The diminution of the sub-arc asthenospheric wedge during Nazca plate shallowing left the Incapillo magma chamber unreplenished by both mafic mantle-derived and lower crustal melts and thus stranded at shallow depths within the Andean crust. Based on its small size and distinctive high-pressure chemical signature, the Incapillo Caldera and Dome Complex provides an endmember model for an Andean caldera erupting within a waning magmatic arc over a shallowing subduction zone. © 2010 Springer-Verlag.


TORONTO, ON--(Marketwired - November 22, 2016) - Mining companies were awarded and celebrated last night for their investments in renewable energy at a glittering awards gala and dinner in Toronto. Mining companies from Canada, Chile, Mexico, Australia, and South Africa received awards for their investments in wind and solar technologies at the Energy and Mines Renewables and Mining Awards. "These mining companies, along with their partners from the renewable energy sector, are leading the way to sustainable, affordable, low-carbon energy for mines through these projects and commitments," commented Dr. Andrew Slavin Director, Energy and Mines. "We are delighted to recognize and celebrate their successes." Awards were presented in 12 categories and winners were selected through a combination of independent research, a nominations process and international jury consideration. Over 150 senior mining and renewable energy experts attended the awards gala which was sponsored by the Carbon War Room and Canada Clean Fuels. Best use of Energy Storage (Electrical) at a Mine Site: Glencore - Raglan Mine Best use of Renewables for Mine Transportation - Sponsored by Canada Clean Fuels: Kirkland Lake Gold Renewables in Mining - Visionary of the Year - Sponsored by Carbon War Room: Nick Holland, CEO, Gold Fields Best use of Renewables at a Reclaimed Mine site: Teck Resources Best use of Renewables for Mine Exploration: Avalon Advanced Materials Best use of Solar Thermal: CODELCO Best use of Solar PV in Mining > 100 MW: Antofagasta Minerals Best use of Solar PV in Mining < 100 MW: IAMGOLD Best use of Wind in Mining > 100 MW: Industrias Peñoles Best use of Wind in Mining > 50 MW and < 100 MW: Grupo Mexico Best use of Wind in Mining < 50 MW: Diavik Diamond Mine, Rio Tinto Renewables in Mining - Project of the Year: Sandfire Resources For more information on the Congress and Awards visit: http://worldcongress.energyandmines.com/. About Energy and Mines: Energy and Mines, the leading information source for renewables and energy innovation in mining, has released the final shortlist of international mining companies eligible for awards based on their investments and commitments to renewables. The shortlist includes a geographically diverse group of mining operators with a wide variety of project sizes using wind, solar and solar thermal technologies to power their operations. www.energyandmines.com

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