1-13 OF 13 RESULTS FOR

Portovelo-Zaruma mining district

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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...
FIGURES | View All (6)
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...
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 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...
FIGURES | View All (10)
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...
FIGURES | View All (7)
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...
FIGURES | View All (6)
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
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...
FIGURES | View All (5)
Journal Article
Journal: SEG Discovery
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
Journal: SEG Discovery
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
Journal: SEG Discovery
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
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 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...