crichtonite
/ˈkrʌɪtənʌɪt/Mineralogy
noun
A titanium and iron-containing mineral found as black rhombohedral crystals.
- Crichtonite is an oxide of titanium, iron, and manganese with some rare earth elements; (Sr,La,Ce,Y)(Ti,Fe3+, Mn)21O38. Crystal system: trigonal. Formerly thought to be identical to ilmenite..
Origin
Early 19th century. From the name of Sir Alexander A. Crichton, Scottish physician and mineral collector + -ite, after French craitonite.