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在广西东部大片泥盆系碎屑岩夹碳酸盐岩内,发现黑色花岗岩,长数百米,宽数十米,而且含有蓝色粒状矿物,闪闪发光,每平方米大于8000点,大小不等,
Within the vast Devonian clastic carbonate rocks in the eastern part of Guangxi Province, black granites were found that were hundreds of meters long and tens of meters wide and contained blue granulated minerals that glittered at a size of 8000 dots per square meter ,