摘要
利用分形方法对微观尺度下矿物微观组构及变化进行研究是目前的热点。本文以个旧芦塘坝矿段不同高度的硫化物矿石中广泛发育的黄铜矿为研究对象,建立起微观条件下的黄铜矿矿物的面积-周长(P-A)分形模型,并研究黄铜矿矿物的大小、不均匀性及空间分布特征,探讨黄铜矿这一标志性矿物在不同高度中的变化情况。结果显示随着深度从1 758 m增加到1 630m分形维DPA总体上逐渐减小,各高度黄铜矿的周长与面积之间存在良好的分形关系。结合黄铜矿颗粒的的不规则系数分析,证明了DPA可以作为指示矿物颗粒不规则性程度的参数。研究表明由深到浅矿物颗粒的大体出现由相对规则到不规则的变化趋势。
The microscopic mineral microscopic fabric and change research using fractal method is currently research hotspot.Based on chalcopyrite in different height of sulfide ores,the paper builded the area-perimeter（P-A） fractal model.Then,the paper studied the size,and mineral chalcopyrite uniformity and space distribution characteristics,and discussed the variations at different height of chalcopyrite mineral.The results showed an increase with depth from 1 758 m to 1 630 m DPA decreases,the perimeter and area of chalcopyrite shows fractal relationship.Combining the irregular factor analysis,it proves the DPA can be used as irregularity indicator of mineral grains.The results show that the mineral grains present relative particles to the irregular trends from deep to shallow.
出处
《华南地震》
2011年第3期27-32,共6页
South China Journal of Seismology
关键词
P-A分形模型
黄铜矿
微观
不规则性
P-A fractal model
Chalcopyrite
Microscopic
Irregularities
