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Keilhau-ite

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Keilhau-ite \Keil"hau-ite\, n. (Min.)
   A mineral of a brownish black color, related to titanite in
   form. It consists chiefly of silica, titanium dioxide, lime,
   and yttria.
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