摘要
新疆尉犁蛭石矿是个大型矿床,含矿岩体为晚元古代超基性杂岩,长4Km,宽200—600m,具分带性,外带为透辉岩,内带为金云母岩和碳酸岩.蛭石矿主要分布在岩体内带.近地表10m品位极富.矿石质量以膨胀Ⅰ级品为主,膨胀10—21倍,最大31.9倍;下部品位贫,膨胀性差,金云母为岩浆晚期结晶而成.蛭石由金云母风化而来.
The vermiculite deposit in Weili is a large one. The ore-bearing rock body Comprised Late Proterozoic ultrabasic complex, it is 4 km long and 200-600m wide, and characteristic of zonation, The outer zone is made of bistagite and the inner zone-phlogopite rock ar.d carbcnatite with a very high grade at lom below the sur face. The ore grade is dominated by the products of the first degree expansion with the swelling of 10-20 up to 31.9 times. The grade is lowered and the swelling comes poorer downward below 10m. Phlogoplte was formed in the opimagmatic crystallization. Vermiculite is the weathering product of phlogopite.
出处
《新疆地质》
CAS
CSCD
1989年第1期1-13,97,共14页
Xinjiang Geology
关键词
晚元古代超基性杂岩
金云母岩
蛭石
磷灰石
新疆
Late Proterozoic ultrabasic complex, phlogopite, vermiculite deposite. apatite,Xinjiang.
