Streak color - Jokonshoku
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The color exhibited by mineral powder. It is often different from the color of the mineral. It is shown by the color of streaks that appear when the mineral is rubbed against a white clay plate (streak plate). Since the hardness of a clay plate is about 6, the streak color of minerals harder than this cannot be seen on a clay plate. However, for minerals with a hardness of 7 or more, the streak color usually becomes the same as the color of the mineral. Source : Heibonsha Encyclopedia About MyPedia Information |
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鉱物の粉末が示す色。鉱物の色としばしば異なる。白い素焼板（条痕板）の上を鉱物でこすったときのすじの色で示す。素焼板の硬度は６ぐらいであるから，これ以上の硬度の鉱物の条痕色は素焼板ではわからない。しかし，硬度７以上の鉱物ではたいてい条痕色は鉱物の色と同じになる。
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