鞍─本地区条带状铁建造中硅铁矿物分异反馈及生长动力学演化  

DYNAMIC EVOLUTION OF GROWTH AND DIFFERENTIATION FEEDBACK OF Si-Fe MINERALS IN THE PRECAMBRIAN BANDED IRON-FORMATION IN THE ANSHAN-BENXI AREA

作　　者：刘洪波[1] 

机构地区：[1]东北大学地质系

出　　处：《矿产与地质》1996年第1期1-5,共5页Mineral Resources and Geology

基　　金：冶金工业部教育司资助

摘　　要：自组织过程中矿物的竞争性颗粒生长模型与颗粒生长动力学演化方程是鞍─本地区条带状铁建造（ＢＩＦ）在变质分异作用过程中硅铁分异形成硅质矿物条带与铁矿物条带的生长反馈系统及矿物竞争性颗粒生长的动力学演化过程，竞争状态的表面扩张担负起了Ｏｓｔｗａｌｄ成熟律作用，使系统向减少颗粒数但加大颗粒体积的状态演化，导致了矿物相的成层分异。The growth feedback system of the silic mineral bands and iron mineral bands formed by Si-Fe differentiation during the metamorphic differentiation process of the banded iron formation(BIF) in the Anshan-Benxi area and the dynamic evolution process during growth of competitive particles of minerals were discussed with growth pattern of the competitive particles of minerals and the dynamic evolution equations of particle growth. The surface extension in competitive statu was responsible for Ostwald's mature law, which made the system to trend to decreasing of particle numbers and increasing of the particle volume, and resulted in stratiform differentiation of the mineral facies.

关 键 词：矿物分异反馈 动力学演化 铁矿床 矿化 

分 类 号：P618.310.5[天文地球—矿床学]