 | Carrión-Mero, Paúl, Herrera-Narváez, Geanella, Herrera-Franco, Gricelda, Sánchez-Zambrano, Emily, Mata-Perelló, Josep, Berrezueta, Edgar (2021) Assessment and Promotion of Geotouristic and Geomining Routes as a Basis for Local Development: A Case Study. Minerals, 11 (4) 351 doi:10.3390/min11040351 | Journal (article/letter/editorial) | | Km. 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador; emnisanc@espol.edu.ec Facultad de Ingeniería Ciencias...Km 30.5 Vía Perimetral, 09-01-5863 Guayaquil, Ecuador Facultad de Ciencias de la Ingeniería, Universidad...Principal La Libertad—Santa Elena, 240204 La Libertad, Ecuador; grisherrera@upse.edu.ec Departamento de Ingeniería...on the existing routes of the Zaruma-Portovelo region (Ecuador), together with a global assessment of... structures and other elements. Currently, in Ecuador, there is no legal recognition for a declaration |  | Turner-Carrión, Magner, Carrión-Mero, Paúl, Turner-Salamea, Israel, Morante-Carballo, Fernando, Aguilar-Aguilar, Maribel, Zambrano-Ruiz, Kerly, Berrezueta, Edgar (2021) A Mineralogical Museum as a Geotourism Attraction: A Case Study. Minerals, 11 (6) 582 doi:10.3390/min11060582 | Journal (article/letter/editorial) | | 2021 Museo Mineralógico Magner Turner, Portovelo 071150, Ecuador; magnerturnersavage@yahoo.com (M.T.-C...Galindo Km 30.5 Vía Perimetral, Guayaquil 9015863, Ecuador Facultad de Ingeniería en Ciencias de la Tierra...Galindo Km 30.5 Vía Perimetral, Guayaquil 9015863, Ecuador Facultad de Ciencias Naturales y Matemáticas, Geo-recursos...Guayaquil 9015863, Ecuador; fmorante@espol.edu.ec Independent Consultor, Zaruma 071350, Ecuador; kgzambra@espol...Abstract: The Zaruma-Portovelo mining district in Ecuador, and in particular, Portovelo City, is home to |  | Van Thournout, F., Salemink, J., Valenzuela, G., Merlyn, M., Boven, A., Muchez, P. (1996) Portovelo: a volcanic-hosted epithermal vein-system in Ecuador, South America. Mineralium Deposita, 31 (4) 269-276 doi:10.1007/bf02280791 | Journal (article/letter/editorial) | | Springer-Verlag 1996 Portovelo: a volcanic-hosted epithermal vein-system in Ecuador, South America F. Van... Quito, Ecuador '~Belgian TechnicalAssistance,c/o BelgianEmbassy,Casilla 532, Quito, Ecuador s Vrije...November 1995 Abstract. The Portovelo epithermal vein-system in southwestern Ecuador has produced more than...with magmatic water. The Portovelo deposit is located in southwest Ecuador (Fig. 1), about 100km from...The only published geological descriptions of Portovelo are by Billingsley (1926) and Van Thournout et |  | 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 |  | Berrezueta, Edgar, Ordóñez-Casado, Berta, Bonilla, Wilson, Banda, Richard, Castroviejo, Ricardo, Carrión, Paul, Puglla, Stalin (2016) Ore Petrography Using Optical Image Analysis: Application to Zaruma-Portovelo Deposit (Ecuador) Geosciences, 6 (2) 30 doi:10.3390/geosciences6020030 | Journal (article/letter/editorial) | | Image Analysis: Application to Zaruma-Portovelo Deposit (Ecuador) Edgar Berrezueta 1, *, Berta Ordóñez-Casado...Consultor-Auditor Minero Freelance, Piñas 070401, Ecuador; wilsonbonilla2@yahoo.com.ar Universidad de Guayaquil...s/n y Av. Juan Tanca Marengo, Guayaquil 090612, Ecuador; richyband@hotmail.com Universidad Politécnica...Guayaquil 090903, Ecuador; pcarrion@espol.edu.ec Compañía Minera PL S.A., Zaruma 070301,Ecuador; sipuglla1993@gmail...sections from Zaruma-Portovelo intermediate sulfidation epithermal deposit (Ecuador) using multispectral |  | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | arc magmatism and associated mineralization in Ecuador Received: 28 January 2003 / Accepted: 31 August...Abstract Most of the economic ore deposits of Ecuador are porphyry-Cu and epithermal style gold deposits...signatures, of continental arc magmatic rocks of Ecuador of Eocene to Late Miocene (50–9 Ma, ELM) and Late...Escuela Politécnica Nacional, AP 17–01–2759, Quito, Ecuador Present address: M. Chiaradia Centre for Geochemical...geochemical signatures of Tertiary magmatic rocks of Ecuador from the ELM- to the LMR-type coincides chronologically |  | 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...propylitic alteration accompanied by mag netite–hematite, pyrite–chalcopyrite, and pyrite veinlets and...Formation Conditions of PortoveloZaruma Gold–Sul phide Vein Deposit, Ecuador, Geochem. Mineral. Petrol |  | 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...accompanying quartz XRDs show the occurrence of abundant hematite and goethite, with variable amounts of jarosite...occur as grains and filling fractures in pyrite, hematite and quartz (Figure 8a–c). In addition, tellurides...(a) Optical microscope image of gold hosted in hematite; (b) optical microscope image of gold hosted in...commonly present enclosed in quartz associated with hematite. There are several generations of quartz, but |  | 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...quartz veins and veinlets in association with hematite. Fluid inclusion data for the main Editorial...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 |  | | 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...Hollandite Todorokite Fe minerals Pyrite Marcasite Hematite Goethite abundant common rare me Fig. 5. Evolution...the various fluorite deposits of the Rio Negro Province. Fig. 8. Mineral coloration of fluorite as a function |  | 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 (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 |  | | 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...are also presently forming at the surface, with hematite and kaolinite near acid hot springs (Wood, 1994)...a common constituent of eruptions, for example at El Chichén, Mexico, and Mount Pinatubo. Exploration |  | | Book | | in 1858, the manganese deposits of the Oriente province had begun production, but it was only in 1902/3...exploit Venezuela - which quickly led to the pursuit of El Dorado ('the golden one') - more German miners must...for 1 peso de oro gives us, expressed in gold, about 20 kilograms of gold (a peso de oro weighed 4.601...Wilford about recent excavations near the town of El Castillo, in the Dominican Republic. The site is...weights. Gold was measured in the gold peso {peso de oro), also called castellano; it was one-fiftieth of |  | | 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 |  | | 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 |  | | Journal (volume) | | jaspery-looking rock composed of finegrained quartz and hematite mixed in various proportions. Locally this material...material grades into practically unmixed hematite. The remaining and commonly the larger parts of the bodies...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 |
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