El Oro
Producer

Portovelo Gold Mines

El Oro, Ecuador
ZincGoldLeadCopperSilverCadmium
⌖ Show on mapUSGS source ↗
Description

Captain Mercadillo

Commodities
PrimaryZinc, Gold, Lead
SecondaryCopper, Silver
TertiaryCadmium
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeY
WorkingsUnderground
Orebody formNARROW, PARALLEL
Ore controlN-S Fracture/Fissure Systems At Portovelo/Minas Nuevas
Materials
Ore mineralsArgentite, Bornite, Chalcocite, Chalcopyrite, Galena, Pyrite, Pyrrhotite, Sphalerite
GangueCalcite, Gypsum, Quartz
Geology
Host rockVolcanic Rock (Aphanitic) · Celica Formation;;
StructurePortovelo-Pinas Nw-Se Fault
AlterationPropylitization, Silicification; 30 Cm Clay-Sericite Alteration Envelopes; Some Secondary Hematite.
Economic & production
Development statusProducer
Production years1878-1971
First production1549
Discovery year1549
Identification
Deposit ID10068846
MRDS IDW002104
Alternate namesCima
RegionSA
Data scoreB
Coordinates-3.63962, -79.58925
References
UNDP, 1969, GOLD AND BASE METAL SULPHIDES-PORTOVELO, REPORT NO. 2BILLINGSLEY, P. 19-26, ZARUMA GOLD DISTRICT, AIMME, VOL. 74, P. 255-275PALADINES, P.A., SAN MARTIN, D.H., AND SUAREZ, L.H., 1980, MAPA METALOGENICO DE LA REPUBLICA DEL ECUADOR: MINISTERIO DE RECURSOS NATURALES Y ENERGETICOS, SCALE 1:1,000,000.MINISTERIO DE RECURSOS NATURALES Y ENERGETICOS, 1982, MAPA GEOLOGICO NACIONAL DE LA REPUBLICA DEL ECUADOR, SCALE 1:1,000,000.GOOSSENS, P.J., FOZZARD, P.M., AND MOSQUERA, C.C., 1969, MINERAL INDEX MAP REPUBLIC OF ECUADOR: NACIONAL DE GEOLOGIA Y MINERA, MINISTERIO DE INDUSTRIAS Y COMERCIO, QUITO, ECUADOR, SCALE 1:1,000,000.INEMIN INSTITUTO ECUATORIANO MINERALIA, 1987, MAPA CATASTRAL MINERO ECUATORIANO.GEMUTS, I., LOPEZ, G., AND JIMENEZ, F., 1992, GOLD DEPOSITS OF SOUTHERN ECUADOR, SOCIETY OF ECONOMIC GEOLOGISTS NEWSLETTER, NO. 11, OCT. 92, PP. 14-16.STOLL, W.C., 1962, NOTES ON THE MINERAL RESOURCES OF ECUADOR, ECON. GEOL., 57(5), P. 799-808.PUIG, C.A., 1984, ECUADOR LOOKING TO MINING INCOME TO SUPPLEMENT OIL REVENUES, ENGINEERING AND MINING JOURNAL, 185, P. 85,89,92.THOURNOUT, VAN AND MERLYN, M., 1990, NUEVO MODELO METALOGENICO EN PORTOVELO, MINERIA ECUATORIANA, NO. 2, P. 17-19.GUSIAMANO, A.J., 1982, ESTUDIO MINERALOGICO DE PORTOVELO, FLYSCH, NO. 3, P. 95-128.1964 UNDPMANY AT MINE. UNDP REPORTS AT UN, NY OF LIMITED DISTRIBUTION1968 UNDP, REPORT ON NEGATIVE RESULTSUNDP, ECUADOR, REPORT NO 2, 1969UNDP, ECUADOR, REPORT NO. 2, 1969