摘要
荆襄磷矿位于上扬子地区东北部的鄂西聚磷区,是中国重要的产磷区之一,其特点是规模大、品位富、质量高。通过分析荆襄磷矿田的地质背景、古地理环境,认为以潮汐作用为主的台坪相是控制本矿田主矿层形成及空间展布的主要因素;同时结合矿田岩石学特征,本区磷块岩以含有较为丰富的有机质为特点,推断本区的有机质和稀土元素富集呈负相关;本区磷矿成矿规律具有多旋回、多期次成矿特点,成因类型上,早期磷块岩多为原地化学、生物化学沉积类型,后期多为异地颗粒再积类型。
Jingxiang phosphate ore is located on the northeastern Yangtze region of phosphorus accumulating area in western Hubei, is one of China＇s important phosphogenetie area, its characteristics is large scale, high grade and high quality. By analyzing geological background and palaeo-geographical environment, platform facies that is dominated by tidalaetion is the main factors of controlling formation of main ore bed and spatial distribution. At the same time, according to the petrological characteristics of the ore field, the paper infers organic matter and the enrichment of rare earth element is negative correlation.
出处
《资源环境与工程》
2015年第6期800-804,834,共6页
Resources Environment & Engineering
关键词
荆襄磷矿
磷块岩
岩石学特征
成矿规律
Jingxiang phosphate ore
phosphorite
petrological characteristics
metallogenic regularity
