Statue - Dazo
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Cracks that appear when a crystal face is poked hard and suddenly with the tip of a needle. They appear regularly, reflecting the symmetry of the crystal. They are usually radial. They have nothing to do with cleavage. For example, the image on a thin-peeled mica surface is three straight lines that intersect at 120° to each other, one of which is longer than the other two. → Related items Mica | Starry sky Source : Heibonsha Encyclopedia About MyPedia Information |
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結晶面を針の先で強く急激に突いたとき現れる裂け目。結晶の対称性を反映し，規則正しく現れる。ふつう放射状をなす。へき開とは無関係。たとえば，薄くはいだ雲母の面上における打像は互いに120°で交わる３本の直線で，１本は他の２本より長い。 →関連項目雲母｜星彩 出典 株式会社平凡社百科事典マイペディアについて 情報 |
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