2) granites-syenites
花岗岩-正长岩类
3) agpaite
钠质霞石正长岩类
4) syenite
[英]['saiə,nait] [美]['saɪə,naɪt]
正长岩
1.
The Preparation of Ceramic and Glass Materials by Use of Yaoan Syenite in Yunnan;
云南姚安正长岩用作陶瓷和玻璃原料的实验研究
2.
SHRIMP U-Pb zircon age of the Quannan syenite,southern Jiangxi:Constraints on the early Yanshanian tectonic setting of SE China;
赣南全南正长岩的SHRIMP锆石U-Pb年龄及其对华南燕山早期构造背景的制约
3.
~(40)Ar-~(39)Ar dating of the orthoclase from the Bugasi syenite body in the Coqen area,Tibet,China
西藏措勤地区布嘎寺正长岩体正长石的~(40)Ar-~(39)Ar年龄
5) orthophyre
['ɔ:θəfaiə]
正长斑岩
1.
Characteristics of Qoima orthophyre in central Qiangtang and its tectonic significance;
羌塘中部雀莫正长斑岩体特征及构造意义
2.
The metallogenetic geologilcal condition of the orthophyre contact zone in YanJia during the Ximalaya period is analysed in this paper.
通过对喜山期岩甲正长斑岩接触带成矿地质条件进行的分析,认为岩甲正长斑岩的接触带及其旁侧构造裂隙系统具备形成金矿的有利条件。
3.
The protolish of host rocks and near deposits wall rocks of the orthophyric tectonic altered rock type gold deposits was the orthophyre.
正长斑岩构造蚀变岩型金矿容矿岩石和近矿围岩的原岩属正长斑岩，它先后发生糜棱岩化，角砾岩化、碎裂岩化，加上后期多种蚀变作用的叠置，使其变得较为复杂。
6) syenite mass
正长岩体
1.
Kuangdonggou-Liangtun syenite mass in the southern margin of Yingkou-Kuandian anteclise within Sino-Korean paraplatform was emplaced in Gaixian Formation of Paleoproterozoic upper Liaohe Group.
矿洞沟 -梁屯正长岩体侵位年龄为 2 175。
补充资料：正长岩
| 正长岩 syenite 一种中性深成侵入岩。浅灰色，具等粒状、斑状结构。 二氧化硅含量约60％，碱质（K，Na）含量稍高。主要由长石角闪石和黑云母组成，不含或含极少量的石英。长石中碱性长石（通常为正长石，微斜长石、条纹长石）约占70％以上。常呈小的岩株，与基性岩、碱性岩组成杂岩体。狭义的正长岩属钙碱性正长岩类，通常石英含量小于5％，依所含暗色矿物种类分为黑云母正长岩、角闪石正长岩和辉石正长岩等。
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参考词条