海南岛石碌矿区富铁矿形成的物理化学条件实验研究

来源期刊：中南大学学报(自然科学版)1979年第3期

论文作者：冷盛强 李佩兰

文章页码：116 - 128

关键词：赤铁矿； 物理化学条件； 磁铁矿； 变质作用过程； 条件分析； 透闪石； 次透辉石； 高温高压实验； 矿区； 变质流体

摘    要：为了研究石碌铁矿床的成因，在野外工作的基础上，我们尝试通过高温高压实验来了解富矿形成的物理化学条件，并对富矿与变质作用过程、构造作用、塑性形变的关系等问题，在实验的基础上进行些讨论。至于有关铁矿的物质来源、搬运形式以及富矿形成后的热液改造等问题，我们的实验未涉及。

Abstract: This paper is divided into four parts: Fart one begins with outline of the geological situation that were closely related to the experimental investigation. Part two is concerned with the experimental techniques of metamorphic condition. Part three and four analyze the metaniorphic condition and discriable conclution. According to the exprimcntal results permit authors to make the following conclusions. The. rich iron was formed due to the results of regional metamorphism. The upperlimite temperature of metaniorphic ore formation was about 450℃ and load pressure was from about 4500 to 5700 atm.In this condition, the value of f (O₂) vyas from about 10^-22.5 to 10^-16.5 atm; the value of f(CO₂) was 1000 atm; the value of f(H₂O) was from 3500 to 4700 atm. Authors also concluded that water was chiefly components of metanmorphic fluids which play a mainly fact in process of rich iron formation .In these metaniorphic process it makes the one desilieation and makes iron preserved in Fe³⁺ As a result of externally heated pressure vessel expriments, provided that Oolitic hematite were produce creeping which make the rich hematite in gigantic thickness; and the condition of these metamor phic process were in plastic state which temperature was about 400℃-450℃ and pressure was larger than 1200kg/cm².