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Zaruma Ecuador

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Journal Article
Journal: SEG Discovery
Published: 01 April 2002
SEG Discovery (2002) (49): 1–14.
...R. M. Spencer; J. L. Montenegro; A. Gaibor; E. P. Perez; G. Mantilla; F. Viera; C. E. Spencer The Portovelo-Zaruma mining camp is an unusual mining district in Ecuador, with historic gold production exceeding 4.5 Moz. The production has mostly come from an extensive set of base metal-rich veins...
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Journal Article
Journal: Economic Geology
Published: 01 September 2004
Economic Geology (2004) 99 (6): 1085–1106.
.... , 2002 , The Portovelo-Zaruma Mining Camp, SW Ecuador: Porphyry and epithermal environments : Society of Economic Geologists Newsletter , no. 49 , p. 1 , 8–14. Stoll , W.C. , 1962 , Notes on the mineral resources of Ecuador : Economic Geology , v. 57 , p. 799 – 808 . Sun , S-S...
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Journal Article
Journal: SEG Discovery
Published: 01 October 1992
SEG Discovery (1992) (11): 1–16.
... a porphyry system. Other similar “high level” breccia prospects occur about 6 km to the north at Pihili ; 10 km SE at Mirador ; and 20 km SE at La Tigrera , La Playa , and Pucara ; and further south at Cerro Pelado ( Fig. 2 ). The Portovelo-Zaruma district in southwestern Ecuador was discovered...
FIGURES
Journal Article
Journal: Economic Geology
Published: 01 November 2010
Economic Geology (2010) 105 (7): 1243–1270.
... et al., 2005 ). This group is mainly made up of volcanic rocks and seriate and porphyritic intrusions in southern Ecuador (parts of the Cangrejos-Zaruma intrusive belt and the Saraguro Group; Fig. 8F, G ), but also includes a minor number of Western Cordillera granitoids ( Fig. 8A–C...
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Journal Article
Journal: SEG Discovery
Published: 01 April 2002
SEG Discovery (2002) (49): 1–48.
..., E. P. Perez, G. Mantilla, F. Viera, C. E. Spencer IAMGOLD Ecuador S.A., Avenida El Tiempo N37-67 y El Comercio, Quito, Ecuador INTRODUCTION t The Portovelo-Zaruma mining camp is .c.J Quaternary deposits Blue schist, eclogites an unusual mining district in Ecuador, Intrusions with historic gold...
Image
Sr, Nd, and Pb isotope compositions of investigated samples. “Central Ecuad...
Published: 01 November 2010
); the Raspas Complex at the western end of the Cangrejos-Zaruma intrusive belt ( Bosch et al., 2002 ); Western Cordillera shallow basement units (mica schist of Amórtegui, 2007 ; single Pichincha xenolith of Chiaradia et al., 2009a ); Western Cordillera amphibolites and/or granulites (amphibolites
Journal Article
Journal: GSA Bulletin
Published: 15 December 2022
GSA Bulletin (2023) 135 (7-8): 2141–2154.
... in Ecuador has been tentatively divided into three segments based on outcrop patterns and tectonic environment ( Fig. 2 ; Schütte et al., 2010 ). † [email protected] . 9 3 2022 19 8 2022 16 9 2022 The basement of the Western Cordillera in Ecuador is made up of Late...
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Journal Article
Journal: Economic Geology
Published: 01 September 2001
Economic Geology (2001) 96 (6): 1361–1378.
...Massimo Chiaradia; Lluís Fontboté Abstract An early Tertiary ensimatic island arc, whose remnants are known as the Macuchi unit, is exposed in the occidental portion of the Western Cordillera of Ecuador. The Macuchi unit consists of two volcaniclastic and volcanic sequences: the Basal Macuchi...
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Journal Article
Published: 11 January 2018
Journal of Environmental and Engineering Geophysics (2017) 22 (4): 315–324.
... , Application of electrical resistivity imaging (ERI) to a tailings dam project for artisanal and small-scale gold mining in Zaruma-Portovelo, Ecuador : Journal of Applied Geophysics , 113 , 103 – 113 . The mining activities in Zeida have left ten pits that are currently filled...
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Journal Article
Journal: SEG Discovery
Published: 01 October 1992
SEG Discovery (1992) (11): 1–28.
..., the Cordillera Real, Ecuador: Tectonophysics, v. 205, p. 187-204. 12 km NNW of Guayaquil contains at least a -2-km2 area of baritic breccias with fragments of barite, andesite, sandstone, shale, quartzite, Jasper, Billingsley, P., 1926, Geology of the Zaruma Gold District of Ecuador: Trans. Amer. Inst. quartz...
Journal Article
Published: 01 April 2021
American Mineralogist (2021) 106 (4): 497–505.
... petrography using optical image analysis: Application to Zaruma-Portovelo deposit (Ecuador). Geosciences , 6 , 30 . Bither , T.A. , Bouchard , R.J. , Cloud , W.H. , Donohue , P.C. , and Siemons , W.J. ( 1968 ) Transition metal pyrite dichalcogenides. High-pressure synthesis...
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Journal Article
Published: 01 September 2020
Journal of Environmental and Engineering Geophysics (2020) 25 (3): 415–423.
...., 2015 , Application of electrical resistivity imaging (ERI) to a tailings dam project for artisanal and small-scale gold mining in Zaruma-Portovelo, Ecuador : Journal of Applied Geophysics , 113 , 103 – 113 . Both SRT and ERT showed that the thickness...
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Journal Article
Journal: Economic Geology
Published: 01 December 2005
Economic Geology (2005) 100 (8): 1667–1674.
... and Nikol veins, Portovelo Zaruma deposit, Ecuador— R. Banda, I.V. Vikent’ev, and L.P. Nosik 1388 Vol. 238, No. 1–2, 2005 Nonequilibrium magma degassing: Results from modeling of the ca. 1340 A.D. eruption of Mono Craters, California— Helge M. Gonnermann and Michael Manga 1...
Journal Article
Journal: SEG Discovery
Published: 01 July 2004
SEG Discovery (2004) (58): 1–60.
... 1 Moz Portovelo-Zaruma mesothermal vein Resources (Machacala), Tumi Resources gold at 1 g/t Au. Newmont is aggres- gold camp. Aurelian Resources, (Tinka), Apex Silver, IRL (Corihuarmi), sively drilling its optioned Liam gold- another recent arrival in Ecuador, Andresmin (Winicocha, Huarangayoc...
Journal Article
Journal: SEG Discovery
Published: 01 January 2002
SEG Discovery (2002) (48): 1–52.
... Laboratories in Ecuador, Bolivia, Brazil, Chile. Ghana, hmba/'Jwe, Kazakhstan and Europe and Economic Geology Publishing Company Sample Preparation Facilities in Flin Flon1 Manitoba; Saint John, NB; Yellowknife NWT; Tumeramo, Venezuela; 7811 Shaffer Parkway · Littleton, CO 80127, USA Tel. +720.981.7882 · Fax...
Journal Article
Published: 30 August 2019
Geological Magazine (2020) 157 (2): 307–320.
... CO2 injection using image analysis . Computers and Geosciences 77 , 97 – 110 . Berrezueta E , Ordóñez-Casado B , Bonilla W , Banda R , Castroviejo R , Carrión P and Puglla S ( 2016 ) Ore petrography using optical image analysis: application to Zaruma...
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Journal Article
Journal: SEG Discovery
Published: 01 October 2003
SEG Discovery (2003) (55): 1–48.
... Tertiary gold-rich La K.R. McClay, advisor. Ph.D., H-R. Spatial and temporal relations Plata volcanic-hosted massive sul- Topaz and cryolite equilibria in phide (VHMS) deposit, Pichincha between evolving fault orientation province, Ecuador. David Tripodi, granitic systems: Implications for and mineral...
Journal Article
Journal: SEG Discovery
Published: 01 January 2007
SEG Discovery (2007) (68): 1–64.
..., Ecuador, El Salvador, México, del Norte), in conjunction with Diego of ore deposits, F93, SGA lecturer), and Peru, and Spain, attended to the theo- Morata (Universidad de Santiago) and Dick Tosdal (Vancouver, Tectonic set- retical part but the eld trip was limited Eduardo Campos (Universidad de Con- ting...
Journal Article
Journal: SEG Discovery
Published: 01 October 2002
SEG Discovery (2002) (51): 1–48.
... permitted the fund­ ing of 25 travel grants (a record number FIGURE 1. Group photo in the Portovelo-Zaruma mining district. in the history of the course) among the 43 Latin American geologists, mining engineers, chemists, and ecologists com­ mation, control, and prevention of acid Ecuador; W. Bonilla, BIRA...
Journal Article
Journal: SEG Discovery
Published: 01 January 2006
SEG Discovery (2006) (64): 1–60.
... Charles Meyer was listed 2004b, Las Cristinas gold project updated Internacional del Oro en Venezuela Asociación incorrectly. Mr. Meyer was posthu- Venezolana del Oro, p. 90 110. mously inducted into The American feasibility study executive summary, Bolívar Zaruma Resources, 2004, Annual Report 2003...