
1) Iron mineral 2) Orthorhombic mineral 3) Titanium mineral
Found on
https://www.crosswordclues.com/clue/warwickite

Warwickite is an iron magnesium titanium borate mineral with formula: (MgFe)3Ti(O, BO3)2 or Mg(Ti,Fe3+, Al)(BO3)O. It occurs as brown to black prismatic orthorhombic crystals which are vitreous and transparent. It has a Mohs hardness of 3 to 4 and a specific gravity of 3.36. ==Occurrence== It occurs metasomatized limestone skarns and in lamproite ...
Found on
http://en.wikipedia.org/wiki/Warwickite

• (n.) A dark brown or black mineral, occurring in prismatic crystals imbedded in limestone near Warwick, New York. It consists of the borate and titanate of magnesia and iron.
Found on
http://thinkexist.com/dictionary/meaning/warwickite/
War'wick·ite noun (Min.) A dark brown or black mineral, occurring in prismatic crystals imbedded in limestone near
Warwick , New York. It consists of the borate and titanate of magnesia and iron.
Found on
http://www.encyclo.co.uk/webster/W/9

Warwickite is a dark brown or black mineral, occurring in prismatic crystals imbedded in limestone near Warwick, New York. It consists of the borate and titanate of magnesia and iron.
Found on
http://www.probertencyclopaedia.com/browse/HW.HTM
No exact match found.