湖南金矿成矿规律

金是湖南的重要矿种之一,本文通过对湖南近年来金矿床勘查进展及其主要类型、主要成矿时代、主要矿集区等的分析与归纳,总结了湖南金矿成矿规律。湖南金矿床具有类型多、成矿时代杂、线性分布的特点。金矿成因类型主要为接触交代型(矽卡岩型)矿床、岩浆热液型矿床(层间破碎带型)、岩浆热液型矿床(微细浸染型或卡林型)、变成型石英脉-交代石英岩型矿床、变成型蚀变破碎带型矿床、砂矿型矿床。地层、构造、岩浆岩等共同控制金矿带的分布及金矿床的定位。金矿主要形成于中生代和新生代,集中分布于21个五级成矿带内,划分为3个成矿系列组,13个成矿预测区。

Metallogenic regularity of gold deposit in Hunan

Gold is one of the important minerals in Hunan, based on the Hunan gold deposit exploration in recent years, the main progress and main types of mineralization, the main ore analysis and induction area, summarized the metallogenic regularities of gold deposits in Hunan. The Hunan gold deposit has the characteristics of multi type, miscellaneous and linear distribution. Genetic types of gold deposits are mainly for the contact metasomatic (skarn) deposits and magmatic hydrothermal deposits (interlayer fracture zone type), magmatic hydrothermal deposit (Carlin type or Carlin type), a type of quartz vein type deposit metasomatic quartzite, a type of alteration type deposit and placer deposit fracture zone. The distribution of gold deposits controlled by strata, structure and magmatic rocks and the location of gold deposits. The gold deposits are mainly formed in Mesozoic and Cenozoic, which are mainly distributed in 21 metallogenic belts of the five grade, and can be divided into 3 metallogenic series and the 13 metallogenic prognosis areas.