geikielite

geikielite

[′gē·kē‚līt]
(mineralogy)
MgTiO3 A bluish-black or brownish-black mineral that crystallizes in the rhombohedral system and occurs in the form of rolled pebbles; it is isomorphous with ilmenite.
References in periodicals archive ?
They are typically found in marble ejecta, sometimes in association with geikielite.
Among the roughly 60 species in my own collection are baddeleyite, chrysotile, forsterite, geikielite, kaliophilite, microsommite, vonsenite and tenorite, all obtained by exchange.
93-044 Isostructural wuth ilmenite and geikielite Hexagonal: [Mathematical Expression Omitted] a 5.