1) Calcium mineral 2) Yttrium mineral
Found on
https://www.crosswordclues.com/clue/keilhauite
Keilhauite (also known as yttrotitanite) is a variety of the mineral titanite of a brownish black color, related to titanite in form. It consists chiefly of silicon dioxide, titanium dioxide, calcium oxide, and yttrium oxide. Keilhauite has a chemical formula of (CaTi,Al2,Fe23+,Y23+)SiO5. It differs from titanite only in that calcium is substitute...
Found on
http://en.wikipedia.org/wiki/Keilhauite
Keil'hau·ite (kīl'hou*īt)
noun (Min.) A mineral of a brownish black color, related to titanite in form. It consists chiefly of silica, titanium dioxide, lime, and yttria.
Found on
http://www.encyclo.co.uk/webster/K/4
Keilhauite is a mineral of a brownish black colour, related to titanite in form. It consists chiefly of silica, titanium dioxide, lime, and yttria.
Found on
http://www.probertencyclopaedia.com/browse/HK.HTM
No exact match found.
