Manganite

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Manganite \Man"ga*nite\, n.
     1. (Min.) One of the oxides of manganese; -- called also
        {gray manganese ore}. It occurs in brilliant steel-gray or
        iron-black crystals, also massive.
        [1913 Webster]
  


     2. (Chem.) A compound of manganese dioxide with a metallic
        oxide; so called as though derived from the hypothetical
        manganous acid.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  manganite
       n : a black mineral consisting of basic manganese oxide; a
           source of manganese