Potassium feldspar
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A mineral whose main component is potassium, it is a general term for feldspar (sanidine), microcline, and orthoclase. It is also called potassium feldspar. The hardness, specific gravity, and cleavage of the above three types are almost the same, and it is impossible to distinguish them with the naked eye. [Satoshi Matsubara] [Reference items] | | |Made in former Czechoslovakia ©Shogakukan "> Orthoclase Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
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カリウムを主成分とする鉱物で、玻璃(はり)長石（サニディン）、微斜長石、正長石の総称。カリウム長石ともいう。前記3種の硬度、比重、劈開(へきかい)はほとんど共通していて、肉眼での識別は不可能である。 ［松原 聰］ [参照項目] | | |旧チェコスロバキア産©Shogakukan"> 正長石 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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