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萨米维尔金矿(Summitville)在美国科罗拉多州西南部的来奥格兰德县境内。位于落基山脉的圣胡安山的东北坡,矿床所在标高3566-3810来(图1)一、资源背景1870年,首次在萨米维尔发现砂金。1873年,人们在南坡,即现在银河公司的采矿点,发现了富金矿露头。十年之后,这里便成为科罗拉多州的重要采金点之一。加上银和铜总价值在380万美元(当时金价为35美元/盎司),1942年美国政府关闭了国内所有金矿。
Summitville is in Rio Grande do Sul, southwestern Colorado. Located in the northeastern slope of the San Juan Mountains in the Rocky Mountains, the elevation of the deposit is 3566-3810 (Figure 1) I. Background In 1870, the gold was first discovered in Samiville. In 1873, people discovered the outcrop of rich gold on the southern slope, now the mining point of the Galaxy Company. Ten years later, it became one of Colorado’s major gold-mining spots. In addition, the total value of silver and copper was 3.8 million U.S. dollars (at that time, the price of gold was 35 U.S. dollars / ounce). In 1942, the U.S. government closed all domestic gold mines.