an·thra·cite /ˈæn(t)θrəˌsaɪt/
  無煙煤
  An·thra·cite n.  A hard, compact variety of mineral coal, of high luster, differing from bituminous coal in containing little or no bitumen, in consequence of which it burns with a nearly non luminous flame. The purer specimens consist almost wholly of carbon. Also called glance coal and blind coal.
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  anthracite
       n : a hard natural coal that burns slowly and gives intense heat
           [syn: anthracite coal, hard coal]