江西茅排金矿矿物学找矿标志  

Mineralogy exploration typomorphism in Maopai gold deposit of Jiangxi

作　　者：胡大千[1] 姚杰[1] 

机构地区：[1]吉林大学地球科学学院,长春130061

出　　处：《世界地质》2007年第3期282-286,共5页World Geology

摘　　要：黄铁矿和石英是主要的载金矿物。黄铁矿形态标型、成分标型、热电性标型和石英红外光谱标型特征具有指导找矿意义。江西茅排金矿区270m中段47勘探线及37～33勘探线的矿物标型特征为：黄铁矿形态见有八面体和五角十二面体，五角十二面体和八面体等聚形；出现空穴心型导电和混合型导电黄铁矿，若为电子心型导电黄铁矿，其热电动势和热电系数的绝对值相对较大；黄铁矿成分中检测出Cu；石英相对吸光度（37～33勘探线）DH2O 0.940 3, DCO2 0.1961, DCO2/DH2O0.259 1,略低于矿区研究样品的平均值（DH2O1.3267,DCO20.3090,DCO2/DH2O0.3382）.表明该处应位于矿体的中上部，矿体向下有一定的延伸。Pyrite and quartz are mainly gold-bearing minerals in Maopai gold deposit of Jiangxi. The typomorphic characteristics of pyrite, in form, content, thermoelectricity and infrared spectrum of quartz, are instructively significant for prospect. Located in the prospecting lines Nos.47 and 37-33 on the middle 270 m section, the mineral typomorphic characteristics are as follows： pyrite possesses the combination of octahedron with pyritohedron, pyritohedron with octahedron, etc. It appearsas hole-centre and mix center conduction, if being electron-centre conduction, the absolute magnitudes of thermoelectromotive force and thermoeleetromotive coefficient of pyrite are bigger relatively; pyrite contains Cu; the relative absorbency in quartz （DH2O 0. 940 3, DCO2 0. 196 1, DCO2 /DH2O 0.259 1 in prospecting lines 37-33） is smaller than average （DH2O1.326 7, DCO20.309 0, DCO2/DH2O 0.338 2） in the deposit. The fact indicates that the location should be at the mid-upper part of the ore body, and the ore body shouId stretch deep down at a certain extent.

关 键 词：标型特征 黄铁矿 石英 金矿床 江西 

分 类 号：P618.51[天文地球—矿床学]