 | Schütte, Philip, Chiaradia, Massimo, Barra, Fernando, Villagómez, Diego, Beate, Bernardo (2012) Metallogenic features of Miocene porphyry Cu and porphyry-related mineral deposits in Ecuador revealed by Re-Os, 40Ar/39Ar, and U-Pb geochronology. Mineralium Deposita, 47 (4) 383-410 doi:10.1007/s00126-011-0378-z | Journal (article/letter/editorial) | | porphyry Cu and porphyry-related mineral deposits in Ecuador revealed by Re-Os, 40Ar/39Ar, and U-Pb geochronology...mineral deposits in southern, central, and northern Ecuador were dated by means of molybdenite Re-Os, biotite...rocks of a similar age, porphyry Cu deposits in Ecuador are frequently spatially associated with deeper-seated...B. Beate Escuela Politecnica Nacional, Quito, Ecuador e-mail: bbeate@uio.satnet.net Present Address:...majority of Miocene deposits occurs in southern Ecuador where areally extensive, post-mineralization (late |  | | Journal (issue) | | GEOLOGICAL SURVEY Number 67 The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Bonilla, W, and Duque, P. 1995. The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Energia y Minas Quito Ecuador P Duque Escuela Politenica Nacional Casilla 2759 Quito Ecuador Contributors NJ...Cover photograph Stunted cloud forest, southern Ecuador ( C Mort.imer, BGS) iii CONTENTS Abstract 1...General setting 5 Geology of Sub-province I 6 Tahuin semi-pelitic division 6 El Tigre unit 6 La Victoria unit |  | | Report (issue) | | 11 The metamorphic belts of Ecuador The metamorphic belts of Ecuador CQVer photograph Cerro Hermoso... OVERSEAS MEMOIR 11 The metamorphic belts of Ecuador M Litherland,] A Aspden and RAJemielita Keyworth...andjf.MIEl,ITA, RA. )994. The metamorphic belts of Ecuador. Overseas Memofr of the British Geologi-cal Survey...7 Andean metallogenesis 9 Metamorphic rocks of Ecuador l0 Stratigraphical nomenclature 10 Metamorphic...and skarns 33 Alao terrane 36 Alao-Paute unit 36 El Pan unit 38 Maguazo unit 39 Guamote terrane • 41 |  | | Report (issue) | | NORTHERN FLANK OF THE HUANCABAMBA DEFLECTION, ECUADOR By TOMAS FEININGER and MILES L. SILBERMAN U.S...NORTHERN PLANK OP THE HUANCABAHBA DEFLECTION, ECUADOR* Tomas Feininger and Miles L. Silberman 2 'Contribution...Naoional, Quito, Ecuador. Departamento de Geologia, Esouela Poll teen ica Nacional, Quito, Ecuador; present address;...Defleotion, a major Andean orecline located at the Ecuador-Peru border, constitutes an important geologic...flank of the Huanoabamba Deflection in El Oro Province, Ecuador, is underlain by Preoambrian polymetamorphie |  | Wang, Rongchao, Liu, Zhankun, Hollings, Pete, Zhou, Xin, Guo, Yongchao, Li, Bin, Yu, Miao, Yang, Bin, Mao, Xiancheng, Lai, Jianqing (2021) Fluid evolution of the Humedo porphyry-related gold deposit, southern Ecuador: Evidence from the boron isotope and chemical variations of tourmaline. Ore Geology Reviews, 128. 103894pp. doi:10.1016/j.oregeorev.2020.103894 | Journal (article/letter/editorial) | | Humedo porphyry-related gold deposit, southern Ecuador: Evidence from the boron isotope and chemical variations...Humedo porphyry-related gold deposit, southern Ecuador: Evidence from the boron isotope and chemical variations...porphyry 4 rocks in the Cangrejos–Zaruma district, Ecuador, northern Andes. The Humedo deposit, 5 with a...porphyry–epithermal system; 30 Humedo gold deposit; Ecuador 2 31 1. Introduction 32 Porphyry systems...Andes is the largest gold producing 46 region in Ecuador and hosts several porphyry Cu-Au and epithermal |  | | Journal (article/letter/editorial) | | from the Andes of Ecuador* by TOMAS FEININGER Escuela Politecnica Nacional, Quito, Ecuador^ (Received 3 February...Geologia, Escuela Politecnica Nacional, Quito, Ecuador. t Present address: Departement de Geologic, Universite...extensively serpentinized harzburgite in El Oro Province, southwestern Ecuador. The high-pressure rocks, all feldspar-free...which constitute the regional basement of El Oro Province. Serpentinization of harzburgite began at depth...arc of Jurassic-Early Cretaceous age in eastern Ecuador are synchronous (132 m.y.). 108 T. FEININGER |  | Baksheev, I. A., Plotinskaya, O. Yu., Yapaskurt, V. O., Vigasina, M. F., Bryzgalov, I. A., Groznova, E. O., Marushchenko, L. I. (2012) Tourmaline from deposits of the Birgil’da-Tomino ore cluster, South Urals. Geology of Ore Deposits, 54 (6) 458-473 doi:10.1134/s1075701512060037 | Journal (article/letter/editorial) | | Canada; Kafan, Armenia; Aktogai, Kazakhstan; and El Teniente, Chile. Tour Corresponding author: I.A...where this relationship is not evident (PortoveloZaruma, Ecuador; Comstock, the United States; Fresnillo...deposit from the zone of quartz–parago nite–muscovite–chlorite metasomatic rocks (Figs. 2a, 2b, 2c)...quartz–sericite rock. (Py) pyrite, (Chl) chlorite, (Mus) muscovite, (Prg) paragonite. BSE image. GEOLOGY OF ORE DEPOSITS...Formation Conditions of PortoveloZaruma Gold–Sul phide Vein Deposit, Ecuador, Geochem. Mineral. Petrol |  | Chiaradia, Massimo, Vallance, Jean, Fontboté, Lluis, Stein, Holly, Schaltegger, Urs, Coder, Joshua, Richards, Jeremy, Villeneuve, Mike, Gendall, Ian (2009) U–Pb, Re–Os, and 40Ar/39Ar geochronology of the Nambija Au-skarn and Pangui porphyry Cu deposits, Ecuador: implications for the Jurassic metallogenic belt of the Northern Andes. Mineralium Deposita, 44 (4) 371-387 doi:10.1007/s00126-008-0210-6 | Journal (article/letter/editorial) | | Nambija Au-skarn and Pangui porphyry Cu deposits, Ecuador: implications for the Jurassic metallogenic belt...southeastern Ecuador. Nambija has been one of the main gold-producing centers of Ecuador since the 1980s...geology of the Subandean zone in southeastern Ecuador is dominated by the I-type, subduction-related...starts in Colombia at 3° N, extends down to 5° S in Ecuador. It also adds a new mineralization style (Au-skarn)...Keywords U–Pb . Re–Os . Ar–Ar . Geochronology . Ecuador . Nambija . Pangui . Skarn . Porphyry Cu . Gold |  | | Journal (article/letter/editorial) | | deposits as part of the S Argentine epithermal province are situated in a region known as the North Patagonian...production of fluorite in Argentina derived from Cordoba Province (98.4%), followed by the Rio Negro and San Juan...(Fig. 3). In this part of the Patagonian volcanic province, effusive and pyroclastic rocks are interlayered...Biotite-Chlorite Smectite (+ smectite-illite m.l.) Muscovite Halogenides Fluorite Chlorargyrite-Br-bearing...the various fluorite deposits of the Rio Negro Province. Fig. 8. Mineral coloration of fluorite as a function |  | Alfonso, Pura, Anticoi, Hernan, Yubero, Teresa, Bascompta, Marc, Henao, Laura, Garcia-Valles, Maite, Palacios, Silvia, Yáñez, Juan (2019) The Importance of Mineralogical Knowledge in the Sustainability of Artisanal Gold Mining: A Mid-South Peru Case. Minerals, 9 (6) 345 doi:10.3390/min9060345 | Journal (article/letter/editorial) | | deposits are the Calpa, Ishihuinca, Ocoña, Sol de Oro, Los Incas and San Juan de Churunga [41]. Cháparra...igneous rocks, which mainly provide feldspars, muscovite, biotite, amphiboles, and chlorite. In veins from...Small-Scale Gold Mining Sector Based on Experiences in Ecuador, Mongolia, Peru, Tanzania and Uganda. Peru Case...Depósitos Metálicos en el Perú. Su Metalogénia, Sus Modelos, su Exploración y el Medio Ambiente; Ingemmet:... D.; Santisteban, A. Mapa Metalogenético del Oro en el Perú; INGEMET: Lima, Peru, 2010. Sillitoe, R.H |  | Vallance, Jean, Fontboté, Lluís, Chiaradia, Massimo, Markowski, Agnès, Schmidt, Susanne, Vennemann, Torsten (2009) Magmatic-dominated fluid evolution in the Jurassic Nambija gold skarn deposits (southeastern Ecuador) Mineralium Deposita, 44 (4) 389-413 doi:10.1007/s00126-009-0238-2 | Journal (article/letter/editorial) | | Jurassic Nambija gold skarn deposits (southeastern Ecuador) Jean Vallance & Lluís Fontboté & Massimo Chiaradia...Piuntza unit in the sub-Andean zone of southeastern Ecuador. The skarns consist dominantly of granditic garnet...fluids . Oxygen isotope . Chlorite . Nambija . Ecuador Introduction Skarns are an important source of...district is one of the main gold producers of Ecuador (see Chiaradia et al. 2009) and is economically...located in the sub-Andean zone of southeastern Ecuador, 40 km west of the Peruvian border (Fig. 1). The |  | Hrstka, T., Gottlieb, P., Skála, R., Breiter, K., Motl, D. (2018) Automated mineralogy and petrology - applications of TESCAN Integrated Mineral Analyzer (TIMA) Journal of GEOsciences, 63 (1) 47-63 | Journal (article/letter/editorial) | | clinochlore glaucophane heulandite-Ca anthophyllite muscovite enstatite gypsum leucite magnesioaxinite winchite...K-feldspar (28→6.5 vol. %), quartz (33→10 vol. %), and muscovite (12→2 vol. %), along with a strong increase in...wt. %) Layer # Orthoclase Albite Quartz Schorl Muscovite Zinnwaldite Apatite Topaz Fluorite Rutile Columbite...image analysis: application to Zaruma-Portovelo Deposit (Ecuador). Geosciences 6: DOI 10.3390/geosciences6020030...(2016) Understanding the effect of mineralogy on muscovite flotation using QEMSCAN. Int J Miner Process 155: |  | | Journal (issue) | | Thermal waters USA IDRIS Apartment 18, 61 Gesr El Suez Roxy-Heliopolis, Cairo, Egypt Mining Geology...nations, was extended to Argentina, Brazil and Ecuador. This paper summarizes the results of these studies...Malaysia, Thailand, the Philippines, Brazil and Ecuador) are humid tropical, those in Zimbabwe experience...Enriquez Adit Mesothermal lodes Nambija Adit Portovelo Adit Skarn and post-skarn epithermal (Au) Passagem...both porphyry and skarn characteristics, Portovelo (Ecuador) which hosts mesothermal polymetallic mineralization |  | | Journal (volume) | | grains of feldspar and chert, and a very few of muscovite. Most of the grains are sharply angular but some...horse are directed more strongly outward than in EL. laurentius. The fossettes of the latter are markedly...collected along the Rio Culebra above Santa Isabel, Province of Col6én, Panama, near sea level, Aug. 10, 1911...collected along the Rio Culebra above Santa Isabel, Province of Col6n, Panama, near sea level, Aug. 10, 1911...Herbarium, no. 678998, collected along the Rio Fat6, Province of Colén, Panama, near sea level, July, 1911, |  | | Journal (volume) | | Applachian Plateau province in Alabama—and northward into the Appalachian Valley province of central New...8 mm. Type locality Hamburg Farm, Santa Clara Province, Costa Rica. Described from a series of winged...mm. Type locality. —Hamburg Farm, Santa Clara Province, Costa Rica. Described from a series of winged...9 mm. Type locality— Hamburg Farm, Santa Clara Province, Costa Rica. Described from a series of winged...8 mm. Type locality —Hamburg Farm, Santa Clara Province, Costa Rica. Described from a winged adult and |  | | Journal (issue) | | Central Provinces respectively ; in the Eastern Province, instead of one large plantation, smaller ones...at two centres, viz. Appolonia in the Western Province of the Colony, and Northern Ashanti. The rice...the mean height above sea-level of the Buganda Province, where most of the rubber is grovvn, is just under...deposit, together with some smaller ones in the same province, produces about 90 per cent. of China's total...mining and smelting are used, Kochui in Yunnan province has produced annually between 7,000 • and 8,000 |  | | Journal (volume) | | cypress tree at This tree, which is many centuries old, El Tule, near the city of Oaxaca. has a trunk circumference...from Milagros, Province of Piura, Peru; Grallaricula boliviana from Incachaca, Province of Cochabamba...piurae from Chilaco, near Samate on the Rio Chira, Province of Piura, Peru; Phacellodonms striaticeps griseipectus...Alamor, Peruvian-Ecuador boundary; Xenops rutihis connectens from Todos Santos, Province of Cochabamba,...Xiphorhynchus triangularis bangsi from Yungas, Province of Cochabamba, Bolivia; Thripohrohis layardi madeirae |  | | Report (volume) | | BARRY, John G., Mining Geologist, Mills Building, El Paso, Texas. BARTON, Joseph C., Mining Engineer,...for Ore Shippers, Umpire and Control a Specialty, El Paso, Texas. DEFTY, W, E., Mining Engineer, 618 N...DRURY, Walter M., Mining Engineer, Mills Building, El Paso, Texas. DUDLEY, H. C., Mining Engineer, 704...Tennessee. HOYLE, Charles, Mining Engineer, Apartado 8, El Oro, Mexico. HUNT & CO., Robt. W., Engineers, 2200...American American Ecuador Eagle PAGE Copper Co., 1482 Eagle Mng. Co., Ida.. 710 Ecuador Trad. Corp., |  | Амплиева, Е. Е., Ковальчук, Е. В., Ковригина, С. В., Петров, В. А., Устинов, С. А. - Eds. (2020) Новое в познании процессов рудообразования. Труды молодых ученых, посвящённые 90-летию ИГЕМ РАН [New in the knowledge of ore formation processes. Works of young scientists dedicated to the 90th anniversary of IGEM RAS]. ИГЕМ РАН, Москва. | Book | | 2013. Vol. 59, № 2. P. 359–390. Salama W., Aref M.M. El, Gaupp R. Mineral evolution and processes of ferruginous...the Grib kimberlite pipe, Arkhangelsk diamond province, Russia: Evidence for mantle metasomatism associated...megacrysts from the Grib kimberlite, Arkhangelsk province, Russia: Relation to clinopyroxene–phlogopite...the V. Grib kimberlite pipe, Arkhangelsk Diamond Province, Russia: Texture, composition, and origin // Geosci...image analysis: application to Zaruma Portovelo deposit (Ecuador) Geosciences. 2016. т. 6, № 2. Р. 30 |  | | Report (volume) | | AMERICA. Argentina Bolivia Brazil Chile Colombia Ecuador Peru Venezuela . 1763 1763 1768 1770 1786 1790...ON DUG TO /tS. GOOD C Tfie SEPARATION OF ORES By EL ECTRICITY ELECTROSTATIC SEPARATORS for the concentration...Iron Corp., New York.. 1264 Canton Mining Co., Oklahoma. .. .1276 Canton Mining Co., Utah 1389 Canyon...1599 Corella Copper Co.. Queensland. . 1889 Cork-Province Alines. Ltd., B. C..1543 Corncob Mng. & Dev. Co...N. M..1242 Economy Gold Mines Co., Mont. . 922 Ecuador, Mines of 1790 Eden-Crescent Mng. Co., B.C.... |  | | Report (volume) | | oe sme ene ae 229 Reon ee 249 tone) 259 eee tae el fire toate eysvcstrinsiaspenesiarenoc Low-Sulfidation...However, later Eger became the seat of a new Turkish province (vilayet), and many moslems settled here. From...exploration successes since the late 1970s, e.g., El Indio (Chile), Hishikari (Japan), Ladolam (Papua...a common constituent of eruptions, for example at El Chichén, Mexico, and Mount Pinatubo. Exploration...c f f a Ls La Coipa (LC) Pascua (Pa) EI Indio (El) Waihi (Wa) Figure 16. Tectonic setting of LS and |  | | Book | | 161 170 179 Dabie Shan, China 179 Geologic Province 181 Saxonian Erzgebirge, Germany 188 References...from kimberlite bodies of the Yakutian diamond province 114 6.16 Ratio of Cr2O3, Al2O3, and MgO in ilmenite...from kimberlite bodies of the Yakutian diamond province 115 6.17 Increasing O2 activity with decrease...section of the Ellendale 9 vent, West Kimberley Province, Western Australia 137 7.5 Geological sketch...section of the Ellendale 4 vent, West Kimberley Province, Western Australia 138 7.6 Nd, Sr variations |
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