火山活动与金矿床

Volcanism and gold deposit

火山活动不仅对铁、铜多金属矿床的形成具有重要意义,而且对金矿形成也是至关重要的。笔者多年在火山岩分布区的工作和整理大量国内外大型超大型矿床矿田地质资料,深切地认识到火山作用在金矿形成过程中的重要意义。本文将从金矿床地质成因类型划分及其规模和资源量、各类型矿床的地质条件分析来说明这一认识,并初步总结了找矿工作中应注意的问题和标志,试图来推动火山岩地区金矿找矿工作。由于陆相火山岩金矿较为直观,因此本文着墨较少,而着重说明海底火山活动与金矿形成的内在联系。

Volcanism has great significance not only for the formation of Fe and Cu-polymetallic deposits,but also for gold mineralization.The authors have deeply realized the great significance of volcanism in the formation of gold deposits through many years of work in areas of volcanic rocks and arrangement and analysis of geological data of large and superlarge gold deposits at home and abroad.This paper elucidates this understanding from the genetic types of gold deposits and their sizes and reserves and analyses of geological conditions of various types of gold deposits and preliminarily summarizes the problems meriting attention and indicators in gold prospecting with an attempt to improve gold prospecting in volcanic areas.The paper focuses on the internal relation between submarine volcanism and formation of gold deposits,while gold deposits related to terrestrial volcanism are scarcely discussed because they are more directly perceived.