中国沉积微晶白云母矿的发现及开发前景

中国首次发现的沉积微晶白云母岩 ,产在川西地区新元古代成冰系中的一套陆相富钾酸性火山 -沉积碎屑岩中 ,是一种新的岩石类型和白云母矿的新类型。矿石组分比较简单 ,白云母呈板状微晶产出 ,含矿率高 ,初步分析矿床是由富钾酸性火山灰或火山尘通过陆解作用和成岩作用及后生作用形成板状块云母。矿石储量大 ,易采、易选、易加工 ,成本低廉 ,用途广阔 ,是生产白云母粉的优质接替资源 ,具有巨大的潜在开发前景

THE DISCOVERY AND DEVELOPMENT PROSPECTS OF SEDIMENTARY MICRITIC MUSCOVITE ORE IN CHINA

A new type of rock and ore of sedimentary micritic muscovite has been discovered for the first time in China. It occurs in the K-rich, acidic, volcanic-sedimentary clastic rocks of terrestrial facies of Late Proterozoic in the western Sichuan Province. The sedimentary muscovite ore is of micritic texture and slaty structure with relatively simple ore components. Preliminary analysis shows that the formation of this deposit is resulted from the resolution of volcanic ash, the diagenesis and the catagenesis. The muscovite deposit is of large reserves and the ore is easy to dress and mine. The low cost of mining and wide application of the ore make it become a quality-replacing product of muscovite powder, and therefore, is of potential development prospects.