一、问题的提出铬铁矿的形成是含铬基性、超基性岩浆分异演化的结果。长期以来形成了一种概念,即安定的地质环境、微弱构造活动,是岩浆分异和铬铁矿聚集的有利条件,象我国大都是阿尔卑斯型岩体,也都套用这一成矿模式。在这种理论指导下,岩体地质构造被看作是与成矿作用无关或是破坏岩浆分异和矿液聚集的一种现象;把超基性岩体本身各种原生裂隙构造,归结为岩浆冷凝收缩所引起,与构造应力场无关。目前盛行的流动分异理论,亦认为岩浆是在安静的地质环境下,岩浆边流动边分异,造成含矿物质由分散向聚集转化,这里关于岩浆流动的原因,则缺乏说服力。板块构造虽把构造作用(特别是深断裂)对超基性岩生因作了解释,但它过分强调了“冷侵入”的成岩方式。地质力学的实践开拓了矿产予测的新局面。为了使铬矿地质工作在广阔领域向前发 First, the question put forward Chromite is the formation of chromogenic, ultrabasic magmatic differentiation results. For a long time, a concept has been formed that the stable geological environment and weak tectonic activity are favorable conditions for magmatic differentiation and chromite accumulation. Like most Alpine-type rock mass in China, this type of metallogenic model is also applied. Under the guidance of this theory, the geological structure of rock mass is regarded as a phenomenon that has nothing to do with metallogenesis or destroys magmatic differentiation and mineral accumulation; the various primary fracture structures of ultramafic rocks itself are summarized as Magmatic condensation caused by contraction, and tectonic stress field has nothing to do. At present, the prevailing theory of mobile differentiation also holds that magma is in a quiet geological environment where the margins of magma are differentiated and the minerals are transformed from dispersed to aggregated. The reasons for magma flow here are not convincing. Plate tectonics, although tectonic (especially deep fractures), explain ultrabasic pelagics, but it overemphasizes diagenesis of “cold intrusion”. The practice of geomechanics has opened up a new prospect of mineral prediction. In order to chrome ore geological work in the vast areas forward