Abstract : the paper presents distribution of nepheline syenites and theirtectonic settings , rock assembladges , mineral associations and geochemisical characteristics , discusses the relationship between the minerological characteristics of main minerals and their host rock 文摘:介绍了中国霞石正长岩的分布、产出的大地构造环境、岩体的岩石组合、岩石的地球化学和造岩矿物组合特征。
4.
Analysis f k and na in nepheline were curried out with higher precision and repeatability by means of adding fluohydric acid during sample melting to remove sio2 , adjusting the ratio of k and na in the solution to reduce the mutual interference of the two elements , and adding cesium chloride to eliminate ionization interference 摘要本方法用于测定霞石中的钾、钠，主要通过在溶样时加入氢氟酸除去二氧化矽，调整溶液中钾、钠的含量，消除互相之间的干扰，加入氯化铯消除电离因素的干扰，提高了分析结果的准确性和重现性，使测定结果更接近化学分析值。
5.
The rock texture ， mineral occurence feature ， ore electronmagnetic milling and applied possibilities in ceramics and glass of the jadeite metamorphic aegirine - augite nepheline syenite in suizhou ， hubei were studied . the results show that the ore deposit combines the advantages of mining and milling ， and the finished ore by single electronmagnetic milling may be fully utilized as the raw materials for ceramics and glasses . meanwhile ， another important fact is that the compositon with 90 percent raw ore may be manufactured into the wall and floor tiles with glaze , which was affirmed by a lot of experiment research 随州硬玉质变霓霞正长岩的岩石组织结构、矿物赋存状态、矿石可选性和玻璃陶瓷原料应用试验研究表明：该资源具有易采易选两大优点，矿石经单一磁选的精矿可作玻璃和陶瓷的原料；同时已反复试验证实该资源可烧成原矿用量达90的釉面墙地砖。
6.
Analysis of k and na in nepheline were curried out with higher precision and repeatability by means of adding fluohydric acid during sample melting to remove sio2 , adjusting the ratio of k and na in the solution to reduce the mutual interference of the two elements , and adding cesium chloride to eliminate ionization interference 摘要本方法用于测定霞石中的钾、钠，主要通过在溶样时加入氢氟酸除去二氧化矽，调整溶液中钾、钠的含量，消除互相之间的干扰，加入氯化铯消除电离因素的干扰，提高了分析结果的准确性和重现性，使测定结果更接近化学分析值。
