江西宁都官齐坑地区瓷土、瓷石矿地质特征与矿床成因

Geological Characteristics and Genesis of Porcelain Stone Deposits in Guanqikeng Area,Ningdu County,Jiangxi

本文研究了官齐坑瓷土和瓷石矿在矿体形态、矿石质量等方面的异同,指出官齐坑地区瓷土、瓷石矿原岩为正长花岗岩脉,瓷土矿的厚度相比瓷石矿变化更大;具有更低的Na2O含量、更高的K2O/Na2O比值;瓷土矿的稀土配分模式为平直型,具有明显的Eu正异常特征。烧制试验表明,瓷土、瓷石矿可以作为制作日用陶瓷的配料和建筑陶瓷原料。矿床的成因与岩浆作用、表生作用及地貌作用等有关,涉及成岩过程、风化过程、元素富集过程等。

This article studies the similarities and differences in ore morphology,ore quality,and other aspects between porcelain clay and porcelain stone ore bodies in the Guanqikeng.It is pointed out that the original rock of porcelain clay and porcelain stone ore in the Guanqikeng area is a syenite vein,and the thickness of porcelain clay ore varies more than that of porcelain stone ore;Having lower Na2O content,higher K2O/Na2O ratio;The rare earth distribution pattern of porcelain clay ore is straight,with obvious Eu positive anomaly characteristics.The genesis of mineral deposits is related to magmatism,epigenesis,and geomorphology,involving diagenesis,weathering,and element enrichment processes.