Secondary names

Ferro-ortho-titanate

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Fe^{2+}$	Iron(II) cation	element	2		constituent element	main
	$Ti$	Titanium	element	1		constituent element	main
	$O$	Oxygen	element	4		constituent element	main

Composition comments

Common impurities: generaly magnetite ($Fe^{2+}\!Fe^{3+}_2\!O_4$) or pseudo brookite ($TiO_2$)

Oxides

Formula	$FeO$	$TiO_{2}$
Mass fraction (%)	64.27	35.73

Strunz

Class

oxides - hydroxides - arsenites (04)

Division

metal:oxygen = 3:4 and similar (04.B)

Family

with only medium-sized cations (04.BB)

Code

04.BB.05

Dana

Major class

oxides and hydroxides (III)

Class

multiple oxides (07)

Type

(A+B++)2X4 Spinel group (07.02)

Group

Titanium subgroup (07.02.05)

Code

07.02.05.02

Phase type

crystalline

Crystal system

isometric (cubic)

Crystal class

hexoctahedral

Crystal class symbol

m-3m (Oh)

Crystal spacegroup

Fd-3m

Refringence type

isotropic

Refringence sign

no

Birefringence

0

Refraction index $n_{\alpha}$

2.28

Pure color

black

Color

black, iron-black, brown in reflected light

Diaphaneity

opaque

Luster

metallic

Links

• Wikipedia
• Webmineral database
• Mindat
• Handbook of Mineralogy (Min. Soc. Am)