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1-13 OF 13 RESULTS FOR
Portovelo-Zaruma mining district
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Journal Article
The Portovelo-Zaruma Mining Camp, Southwest Ecuador: Porphyry and Epithermal Environments
Journal: SEG Discovery
Publisher: Society of Economic Geologists
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...
Journal Article
SEG Newsletter 49 (April)
Journal: SEG Discovery
Publisher: Society of Economic Geologists
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...
Journal Article
Gold Deposits of Southern Ecuador
Journal: SEG Discovery
Publisher: Society of Economic Geologists
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...
Journal Article
Metal Sources in Mineral Deposits and Crustal Rocks of Ecuador (1° N–4° S): A Lead Isotope Synthesis
Journal: Economic Geology
Publisher: Society of Economic Geologists
Published: 01 September 2004
Economic Geology (2004) 99 (6): 1085–1106.
...-Zaruma Muluncay Mine 9 Epithermal Au Chaucha 79°38'W, 3°41'S 24 3 Portovelo-Zaruma Portovelo Mine 9 Epithermal Au-Ag Chaucha 79°37'W, 3°44'S 25 3 Portovelo-Zaruma Zaruma Mine 9 Epithermal Au-Ag Chaucha 79°37'W, 3°43'S 26 N.d. Cosanga 10...
Journal Article
An Application of Electrical Resistivity Tomography To Investigate Heavy Metals Pathways
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...
Journal Article
Integration of Multi-geophysical Approaches to Identify Potential Pathways of Heavy Metals Contamination - A Case Study in Zeida, Morocco
Ahmed Lachhab, El Mehdi Benyassine, Mohamed Rouai, Abdelilah Dekayir, Jean C. Parisot, Mustapha Boujamaoui
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...
Journal Article
INTERESTING PAPERS IN OTHER JOURNALS
Journal: Economic Geology
Publisher: Society of Economic Geologists
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
Gamma-enhancement of reflected light images: A rapid, effective tool for assessment of compositional heterogeneity in pyrite
Journal: American Mineralogist
Publisher: Mineralogical Society of America
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...
Journal Article
SEG Newsletter 11 (October)
Journal: SEG Discovery
Publisher: Society of Economic Geologists
Published: 01 October 1992
SEG Discovery (1992) (11): 1–28.
... Sixlo Duran, who was elected Presldenl in July 1992. A new mining Jaw was passed In 1991 and, LJ Steep subduction although regulatlom are pending, foreign Investment is welcomed. Toe gold mining tradition began in 1549 with the Portovelo mine, and many .& Recent volcanoes small silver and gold veins...
Journal Article
SEG Newsletter 58 (July)
Journal: SEG Discovery
Publisher: Society of Economic Geologists
Published: 01 July 2004
SEG Discovery (2004) (58): 1–60.
... of embryonic mining industry. Current the porphyry system is preserved gold production is estimated at 8 t, Papa Grande deposit, now owned by beneath alluvium. derived largely from informal vein oper- ations in the Portovelo-Zaruma and IMC. The Gaby-Papa Grande deposit, Solomon commenced detailed IP Ponce...
Journal Article
SEG Newsletter 55 (October)
Journal: SEG Discovery
Publisher: Society of Economic Geologists
Published: 01 October 2003
SEG Discovery (2003) (55): 1–48.
... Vallance, Geneva, Switzerland, and Massimo Chiaradia, Leeds, UK), and the Zaruma- Portovelo intermediate sul dation gold deposits (Richard Spencer, IAMGOLD, Quito). Participants received, in addi- tion to the printed course notes, a CD- ROM with most of the presentations in Powerpoint and as pdf les...
Journal Article
SEG Newsletter 51 (October)
Journal: SEG Discovery
Publisher: Society of Economic Geologists
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
SEG Newsletter 52 (January)
Journal: SEG Discovery
Publisher: Society of Economic Geologists
Published: 01 January 2003
SEG Discovery (2003) (52): 1–56.
... THE EXECUTIVE DIRECTOR SEG NEWS Summary of Activities for the Year 2002 Brian G. Hoal SEG membership reached an all-time CONFERENCES, FIELD TRIPS, and Portovelo/Zaruma gold mining high, rewarding the Society s efforts to AND SHORT COURSES provide value to its members in the areas districts and was attended...