摩氏(北京話叫莫氏)硬度係套礦物硬度標準,由德國礦物學家Friedrich Mohs喺1812年提出。
佢將十種常見礦物嘅硬度由小到大分為十級,即(1)滑石、(2)石膏、(3)方解石、(4)螢石、(5)磷灰石、(6)正長石、(7)石英、(8)黃玉、(9)剛玉、(10)金剛石(鑽石)。
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