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调查研究认识到:超基性岩内为数不多、却分布均匀的金,可藉正常的红土化作用经化学溶解并重新沉淀在可能具有工业意义的砂矿床内. 这一假设可回溯到1955年对法属圭亚那的一个砂金矿研究之后.当时的结论是:该砂金矿唯一可能的来源是被河道切割的、红色厚层红壤.河道内的一些金显然是从溶液中再沉淀下来的这一假设若对,即可解释加里福尼亚州马瑟洛德地区层位较高的第三纪河道内和内华达山脉西坡上的金矿床;还能解释高纯度大块天然金(俗称狗头金)的存在,那么也就有了勘查尚未发现、可以露采的人规模、低品位金矿的钥匙. 1955年前后只认识到,许多大型砂金矿集中在红土化超基性岩区或其两侧.早年参加加里福尼亚淘金热的人曾提出金可藉溶解作用和再沉淀而富集的观点,但因
The survey found that a small but uniform distribution of gold in the ultrabasic rocks can be chemically dissolved and reprecipitated in a potentially industrialized sand deposit by normal lateriticization dating back to 1955 After a study of a gold-bearing gold mine in French Guiana, the conclusion was that the only possible source of the gold-gold mine was a thick, reddish red soil cut by the river, and some of the gold in the river was clearly reprecipitated from the solution This assumption, if true, explains the gold deposits in the Upper Triassic Channel and the Western Sierra Nevada slopes in the Muswell Lot, California; and explains the high-purity bulk natural gold Gou Gold), then there will be exploration has not yet found that people can reveal the size of low-grade gold key .1955 only realized that many large gold deposits concentrated in lateritic ultrabasic rock Or both, the earliest people who participated in the California gold rush have proposed the idea that gold can be enriched by dissolving and reprecipitating