Naranjo

概述

Massive sulfide lenses at 3 stratigraphic levels, stringers. Upper lens oxidized and strongly leached. Lower two lenses and related stringer zones. Zoned with upper Au-Ag-Pb-Zn, central Cu, lower Cu-Zn-Au; stockwork of quartz-pyrite-chalcopyrite-chlorite. Fault offsets deposit. Calc-alkaline island arc setting. Inferred reserves 9.7 million t @ 0.76% Cu, 1.91% Zn, 0.51% Pb, 1.4 g/t Au, 69 g/t Ag, open.

地质背景

构造环境: Siliciclastic-felsic in mature epicontinental arc

资源与开采

投产年份: 1903

数据溯源

数据来源: USGS MRDS