| 释义 |
〔feldspar〕Any of a group of abundant rock-forming minerals occurring principally in igneous, plutonic, and some metamorphic rocks, and consisting of silicates of aluminum with potassium, sodium, calcium, and, rarely, barium. About 60 percent of the earth's outer crust is composed of feldspar.长石：任何一组由大量岩石形成的矿物，主要存在于火成岩、深成岩以及一些变性的岩石中，含有钾、钠、钙及极少的钡的铝硅酸盐，地球的外层地壳中约百分之六十是长石〔pluton〕back-formation from plutonisch [plutonic] 源自 plutonisch的逆构词 [深成的；深成岩的] |