Island Mountain
美国· California未知
概述
Massive lenses, kidney shaped. Also brecciated and disseminated ores. Possible faulted extension to the northwest. Produced 112,000 t @ 3.3% Cu, 2.23 g/t Au, 37 g/t Ag. Pre-mined reserves 249,500 t ore.
地质背景
构造环境: Pelite-mafic in mature oceanic backarc
资源与开采
投产年份: 1915
数据溯源
数据来源: USGS MRDS