from The Century Dictionary.

  • noun A rare Norwegian mineral, related to titanite in form; a silicotitanate of iron, aluminium, yttrium, and calcium.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A mineral of a brownish black color, related to titanite in form. It consists chiefly of silica, titanium dioxide, lime, and yttria.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mineralogy yttrotitanite


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