py·ro·phyl·lite /ˌpaɪroˈfɪˌlaɪt, paɪˈrɑfəˌlaɪt/
  葉蠟石
  Py·roph·yl·lite n.  Min. A mineral, usually of a white or greenish color and pearly luster, consisting chiefly of the hydrous silicate of alumina.
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  pyrophyllite
       n : a white or greenish aluminum silicate mineral (resembles
           talc)