alkali-feldspar meaning in English
碱性长石
Examples
- The qiongzhong and danxian batholiths , as the largest early mesozoic syntectonic granite intrusions in hainan island , are mainly composed of porphyritic biotite two - feldspars granitoids , in which alkali - feldspar phenocrysts and dark minerals are foliated mostly in we - direction . the granites are of metaluminous i - type . major and trace elements show co - variations with sio2 , suggesting the fractional crystallization of plagioclase , hornblende , apatite and ti - fe oxides in the evolution of the granites
花岗岩的主量元素和部分微量元素成分与sio _ 2呈良好的相关关系，显示出明显的斜长石、角闪石、磷灰石和ti - fe氧化物等的分离结晶作用，总体上它们与大陆岛弧花岗岩的微量元素丰度和分布特征相似，系统地亏损ba 、 nb 、 sr 、 p和ti等元素。