矿区黄铁矿成分标型特征研究  

A Research on Typomorphic Characteristics of Pyrite in Mining Area

作　　者：魏丽琼 黄丽 蔡恩琪[2] WEI Liqiong;HUANG Li;CAI Enqi(Qinghai Province Environmental Geology Exploration Bureau, Xining, Qinghai 810007, China;The Key Laboratory of Geological Process and Mineral Resources in Northern Qinghai Tibet Plateau, Qinghai Geological Survey Institute, Xining, Qinghai 810012, China)

机构地区：[1]青海省地质调查局,青海西宁810007 [2]青海省青藏高原北部地质过程与矿产资源重点实验室青海省地质调查院,青海西宁810012

出　　处：《中国锰业》2018年第2期148-151,共4页China Manganese Industry

摘　　要：黄铁矿成分标型是矿物最本质的特征因素,融合了众多成因及找矿的关键信息,可为成矿预测及找矿实践提供矿物学的特征参数。在以往研究基础上,以全国各典型的成因类型及亚类型金矿床主成矿期黄铁矿为研究对象,引入经过标准化的蛛网图分析主微量元素的平均含量,以更好的区分各成因类型金矿床,并运用δFe-δS投图方法、Co-Ni-As质量三角图分析主微量元素成分标型特征,从而提取最重要的矿床成因和找矿信息。结果表明:经过标准化处理的主微量元素蛛网图,其标准化值及元素演化趋势可有效识别不同类型金矿床,且δFe-δS、Co-Ni-As均具有良好的分区特征,可反映不同成因类型金矿床的标型差异,对于深化认知矿床成因、找矿勘探具有重要的现实参考意义。Pyrite composition typomorphic is the most essential characteristic factor of mineral. It integrates many origins and key information of ore prospecting, as can provide mineralogical characteristic parameters for metallogenic prognosis and ore prospecting practice. This paper takes the typical and sub type of gold deposit in the main mineralization stage as the research object. It introduce the standardized spidergram to analyze the average content of trace element,so as to distinguish between various genetic types of gold deposits. We use δFe-δS diagram method in Co-Ni-As with the quality of Triangle Chart to analyze main trace elements typomorphic characteristics. It extracts the most important ore genesis and prospecting information. The results show that the standardized main trace element spidergram. The standard value and the evolution trend of elements can effectively identify different types of gold deposits. δFe-δS diagram method in Co-Ni-As has the characteristics of good partitions,as can reflect the standard type differences of different genetic types gold deposits. It has important practical significance for deepening the genesis of the cognitive deposit and prospecting for ore.

关 键 词：黄铁矿 成分标型 主微量元素 Co/Ni比值 

分 类 号：P578.292[天文地球—矿物学]