蜡石(Ceraphite或Chaoite)是第四种碳的同素异形体,也称作白碳。它的存在是有争议的。蜡石在1969年发现,是人类所知最软的纯物质之一。当在游离蒸发环境下加热至超过2,550绝对温度时,会在不透光的石墨晶体面边缘形成小而透明结晶即为蜡石。此外,蜡石本身为双折射的透明材料。当前对此同素异形体衹有非常少的资讯。[1]

该矿物以任职于美国地质调查局的华人地质学家赵景德(Edward Ching-Te Chao)命名。[2]

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