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如今美国从金银品位较高(1.7克/吨金,60～160克/吨银)的剥离岩石和围岩中提取金银,以及智利在此方面的事例已有多起。本文是探讨从组成极不相同,金品位在0.1～0.5克/吨、银品位约在1.0克/吨的低品位剥离岩石和围岩中提取金银的可能性。有两个矿床(1号和2号),围岩都是斜长花岗岩,中有脉石—煌斑岩,已深度蚀变。斜长花岗岩由长石(占60～65％)、石英(占20～25％)、云母(占10～1(?)％)构成。煌斑
Nowadays, the United States has extracted gold and silver from peeled rocks and surrounding rock with higher gold and silver grade (1.7g / tonne gold and 60-160g / tonne silver), and Chile has many cases in this respect. This article explores the possibility of extracting gold and silver from low-grade exfoliated rocks and surrounding rocks of very different composition, gold grade 0.1-0.5 g / t and silver grade 1.0 g / t. There are two deposits (No. 1 and No. 2), the surrounding rock is plagiogranite, in which gangue - lamprophyre, has been deep alteration. The plagiogranite is composed of feldspar (60-65%), quartz (20-25%) and mica (10-1%). Huang Guangban