A blue or bluish black pigment has been prepared based on the technology of coating the phthalocyanine blue and active carbon on the mica-based pearlescent pigment.
将酞菁蓝和活性炭包覆在云母钛珠光颜料上，制得蓝色至蓝黑色的珠光颜料。
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The rocks of this Formation, which are black or light black for rich of c, consist mainly of mica quartz schist, quartzite, marble, carbonaceous phyllite.