Q型聚类分析在确定成矿脉岩中的应用——以桦甸大庙子-菜抢子金矿区为例

吉林桦甸大庙子-菜抢子金矿区脉岩十分发育，且与成矿关系密切。通过近两年对该矿区实际地质调查研究，并重新采集各矿床脉岩、矿石样品30件，以Au、Ag、Cu等8种成矿元素作为变量，用Q型聚类分析的相关系数法进行了统计计算，计算得出金-黄铁矿型矿体与辉绿岩、煌斑岩、花岗斑岩有关；金-多金属型矿体主要与二长花岗斑岩、闪长玢岩有关，并与实际地质调查认识一致。由此明确了本矿区随着岩浆由中性向酸性演化，成矿由贵金属向多金属矿化转变。并在空间上形成叠加．

Application of Q type clustering analyses in determining mineralization-related vein rock-with Damiaozi-Caiqiangzi gold deposit area of Huadian as a case

There are plenty of vein rocks in the Damiaozi-Caiqiangzi minerogenetic region, which have close relationship with mineralization. By two year practical geological investigation and study on this region with 30 samples being taken, statistic calculations were conducted using Correlation Coefficient Method of Q Type Clustering Analyses, where 8 minerogenetic elements, such as Au,Ag,Cu etc. , were taken as input Variables, which yielded a result that the gold deposit of pyrite type deposit is correlated with the diabase, lamprophyre and granite-porphyry metallic type deposit is correlated with the monzonitic granite-porphyry and diorite-porphyrite, whic ; and the goldpolyh is also in accordance with the cognition from the practical geological investigation. Therefore, it is convinced that the mineralization in this area evolves from noble metal to polymetal with the magma evolving from neutral to acidite rocks, and superposes in space.