Multifractal Modeling of Micro Texture of Minerals During Replacement Process
Wall-Rock alteration is a replacement process, due as much to the mineralizing processes, and is very common and always associated with ore deposits at depth, esp. hydrothermal ore deposits. During the alteration process the original minerals are replaced by other minerals with different degrees, causing the changes in the texture, as well as the percentage of component and size of mineral grains. These changes can be characterized by multifractal model quantitatively. In this paper, on the basis of CIS technique, patterns are produced to simulate the process of alteration: one type of mineral is replaced by another type of mineral progressively. The result shows that, with a change in the degree of alteration (the relative percentage of the component of the original mineral changes from about 80％, 50％ to 20％), the corresponding multifractal spectrum changed from left wing-developed, a bell-shape to a right wing-developed spectrum, and the corresponding specific values at q = 2 in multifractal spectrum also changes.
Zhijing Wang Qiuming Cheng
Department of Earth and Space Science and Engineering, York University, 4700 Keele Street, Ontario, Canada M3J1P3
国际会议
The 12th Conference of the International Association for Mathematical Geology(第12届国际数学地质大会)
北京
英文
266-270
2007-08-26（万方平台首次上网日期，不代表论文的发表时间）