金品位分形结构特征及其地质意义——以胶东乳山蓝家庄金矿床为例

Fractal Structural Characteristics and Geological Siginance of Gold Grade——Setting Lanjiazhuang Gold Deposit in Eastern Jiaodong Penisula as an Example

摘要:

胶东乳山蓝家庄金矿床为近年来胶东东部牟平乳山金成矿带探明的一处大型金矿床。该文通过系统收集该矿床Ⅰ号矿体金品位数据，综合运用特征参数统计和分形理论，分析了金品位特征参数垂向变化规律及垂向分形结构特征。研究结果表明，金品位具有显著的多重分形结构特征，矿化较好地段一般具有3～4个分维值，而矿化较差地段一般仅具有1个分维值。金品位特征参数和分形结构的规律性变化指示蓝家庄金矿床Ⅰ号矿体向500m标高以深仍有一定程度地延伸，预测深部具有良好的找矿前景。

Abstract:

Lanjiazhuang gold deposit is located at the south part of Muping-Rushan gold belt in eastern Jiaodong peninsula. It is a large gold deposit which has been discovered recently. Based on characteristic parameters statistics and fractal theory, vertical statistical distribution characteristics of gold grade and fractal texture of No. 1 ore body have been analyzed. It is showed that Lanjiazhuang gold deposit is characterized by moly stage fractal texture. There are generally 3～4 fractal dimension values in good mineralization sections, and only 1 fractal dimension value in poor mineralization section. As showed by regular changes of characteristic parameters and fractal texture, there is an extension below 500m of No.Ⅰore body. It is predicated that there is good prospecting potential.