河南省方城县双山玉矿地质特征及找矿标志

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英文篇名：Geological Characteristics and Prospecting Indicator of Shuangshan Jade Deposit in Fangcheng County,Henan Province 作者：黄杰 ; 郑云鹏 ; 付志晖 ; 陈凯 ; 赵一星 英文作者：Huang Jie;Zheng Yunpeng;Fu Zhihui;Chen Kai;Zhao Yixing;Geological Prospecting Institute of Henan Rock and Mineral Testing Center; 关键词：双山玉矿 ; 地质特征 ; 矿床成因 ; 岩浆热液接触交代型矿床 ; 找矿标志 英文关键词：Jade deposit;;Geological characteristics;;Deposit genesis;;Magmatic hydrothermal contact metasomatism deposit;;Prospecting indicator 中文刊名：KYKB 英文刊名：Modern Mining 机构：河南省岩石矿物测试中心地质勘查院; 出版日期：2018-06-25 出版单位：现代矿业 年：2018 期：v.34;No.590 基金：河南省地质勘查基金项目(编号:豫国土资发[2015]96-21号) 语种：中文; 页：KYKB201806012 页数：6 CN：06 ISSN：34-1308/TD 分类号：54-59

摘要

河南省方城县双山玉矿为新发现的碳酸盐类玉石矿床,因产于河南省方城县双山地区,故被命名为"双山玉"。结合矿区地质工作成果,详细分析了区域成矿地质背景、矿区及矿床地质特征。研究表明:(1)矿体主要赋存于栾川群三川组大理岩与南泥湖组大理岩中,玉化以透闪石化、透辉石化、蛇纹石化为主,总体位于与新元古代黑云正长岩外接触带附近,部分地段呈大捕虏体形式产出;(2)矿区玉石可划分为白双山玉、绿双山玉、黄双山玉、青双山玉等4类;(3)玉石主要化学成分为SiO_2、MgO、CaO,主要致色元素为Ti~(4+)、Fe~(2+)、Fe~(3+)离子,玉石中K、Na含量较低,一般Na含量大于K;(4)双山玉矿床的成因类型为岩浆热液接触交代型矿床,其构造、颜色、粒度及矿物成分特征可以作为找矿标志。
        Shuangshan jade deposit in Fangcheng County in Henan Province is the carbonate jade deposit newly found in recent years. The deposit is produced in Shuangshan area in Fangcheng County in Henan Province,therefore,it is named as " Shuagnshan jade". Based on the geological working results of the mining area,the regional metallogenic geological background,geological characteristics of the mining area and deposit are studied. The study results indicated that:(1)ore-bodies are mainly distributed in the marble of Sanchuan Formation of Luanchuan Group and the marble of Nanhu Formation,jadify types are mainly for transmolite,diopsidization and serpentine,in general they are hosted near the external contact zone of biotite syenite in Neoproterozoic,besides that,they are distributed with the type of big xenolith in local region;(2) the jade types of the mining area can be summarized as white shuangshan jade,green shuangshan jade,yellow shuangshan jade,cyan shuangshan jade;(3)the main components of jade ores are mainly for SiO_2,MgO and CaO,the main colored elements are Ti~(4+),Fe~(2+) and Fe~(3+),contents of Na and K in jade ore are both low,besides that,the content of Na is generally higher than that of K;(4)the genetic type of shuangshan jade deposit is belongs to magmatic hydrothermal contact metasomatism deposit,structure,color,particle size and mineral composition characteristics can be regarded as the favorable prospecting indicators of the mining area.

引文

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