罗马尼亚东南部康斯坦萨高岭土矿床的矿物学研究

MINERALOGIC STUDY ON CRETACEOUS KAOLINITE MINERAL DEPOSIT OF THE SOUTHEAST ROMANIA

本文对罗马尼亚东南部康斯坦萨高岭土矿床进行矿物学研究，该矿床在白垩系古海纳组地层中．经化学分析、Ｘ射线衍射分析、红外光谱分析、差热和电子显微镜扫描等研究，其矿物组成主要为结晶度差的高岭石、少量蒙脱石、伊利石及其混层矿物。铁和钛的有害组份较高。它的成因是由中酸性火成岩受风化作用，经剥蚀、搬运、在较稳定的沉积环境中．经过几次海浸沉积形成的。在沉积后，粘土矿物随着埋藏深度的加大，致使粘土矿物发生转化。

Mineralogic stuty on Cretaceous kaolinite deposit of the southeast Romania was carried out systimatically.From chemical analyses,X-raydiffrection,infrared spectra,differential thermal curves and scanning electrical microscopy we recognized that the mineral deposit is mainly composed of kaolinite with lower crestallinity and little of montmorillonite,illite and their mixlayer minerals.Fe and Ti contents are high.It is proposed that the material source of this deposit is melanic intermediate igneous rock,which underwent weathering,denudation,and transportation and deposition.Morever there were several transgressions during its deposition.