| 释义 |
〔plagioclase〕Any of a common rock-forming series of triclinic feldspars, consisting of mixtures of sodium and calcium aluminum silicates. Also called oligoclase 斜长岩：三斜晶长石系列中一种普通的成岩石，由钠和钙铝硅酸盐组成 也作 oligoclase〔anorthosite〕A variety of diorite consisting chiefly of feldspar.斜长岩：主要含有长石的各种闪长岩〔gabbro〕A usually coarse-grained igneous rock composed chiefly of calcic plagioclase and pyroxene. Also called norite 辉长岩：一种主要由石灰生斜长岩和辉石构成的通常质地粗糙的火成岩 也作 norite〔labradorite〕A variety of plagioclase feldspar found in igneous rocks and characterized by brilliant colors in some specimens.拉长石：一种斜长岩长石的变体，发现于火成岩中，某些样本中含有丰富绚烂的颜色 |