摘要
在对厚婆坳锡床进行了较为系统的基础地质和矿物中流体包裹体研究的基础上,笔者选择一些对解决矿床成因起重要作用的方面进行了高温高压实验模拟工作。研究表明,在有利的成矿溶液作用下,沉积岩中锡的活化率可高达30％,亚锡氯络合物是本矿床锡的主要迁移形式。此外,笔者成功地模拟成矿条件,在350℃、500atm及与Ni—NiO缓冲剂相近的氧逸度下,用二氯化锡合成出了锡石。
Based on general geological studies and fluid inclusion analyses for Houpoao tin deposit, experiments have been carried out at high temperature and high pressure to explain the origin of the deposit. The results indicate that the ore-forming solution may leach as much as 30% of the total tin contained in the sedimentary rock in a suitable condition. The divalent tin chloride complexes are considered to be the main form of tin migration. In addition, the present author has simulated the metallogenetic process and synthesized cassiterite crystal using SnCl powder as a raw material at the conditions of 350℃, 500 atm and oxygen fugacity corresponding to nickel-nickel oxide buffer.
出处
《南京大学学报（自然科学版）》
CAS
CSCD
1990年第1期131-138,共8页
Journal of Nanjing University（Natural Science）
基金
国家自然科学基金
关键词
锡矿
矿床成因
迁移形式
实验模拟
Houpoao in deposi
Leaching experimens of tin
Form of tin migraion
Cassierite synthesis
