名詞 feldspar:

1. any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
   同義詞：felspar

feld.spar

n.（名詞）
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 '0 percent of the earth`s outer crust is composed of feldspar.
長石：任何一組由大量巖石形成的礦物，主要存在于火成巖、深成巖以及一些變性的巖石中，含有鉀、鈉、鈣及極少的鋇的鋁硅酸鹽，地球的外層地殼中約百分之六十是長石

來源：
Partial translation of obsolete German Feldspath
已廢德語 Feldspath的部分翻譯
Feld [field] from Middle High German veld from Old High German feld * see pel…- 2
Feld [（礦物）產(chǎn)地] 源自 中古高地德語 veld 源自 古高地德語 feld *參見 pel…- 2
Spath [spar]
Spath [晶石]