Synthetic Iron(II) iron(III) oxide | SSHADE

Processing math: 100%

Solid phase

Official name: Synthetic Iron(II) iron(III) oxide

Name and identifiers

Secondary names: Iron(II,III) oxide; ferrous ferric oxide; magnetite; ferroso ferric oxide; iron(II) diiron(III) oxide; rust
CAS number: 1317-61-9

Family: covalent network solid
Class: tridimentional covalent network solid
Compound type: oxide-hydroxide

Chemical composition

Formula: $Fe_3O_4$ or $FeO.Fe_2O_3$
Chemical formula: Fe3O4
Elemental formula: Fe3 O4
Isotope mixture type: terrestrial abundance

14.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Fe$	Iron	element	3	0.42857142857142855	1.0	pure	main
	$O$	Oxygen	element	4	0.5714285714285714	1.0	pure	main

Composition comments: alternative formula: FeO.Fe2O3

Class: tridimensional covalent networks (11)
Type: metal homonuclear tridimensional networks (elemental) (11.02)

Associated phases

Equivalent mineral: Magnetite

Crystallography

Phase name: Iron(II,III) oxide
Phase type: crystalline
Crystal system: isometric (cubic)
Crystal class: hexoctahedral
Crystal class symbol: m-3m (Oh)
Crystal spacegroup: Fd-3m

Physical properties

Molar mass: 231.533 $g/mol$
Density: 5.17 $g/cm^3$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid-liquid	liquid $Fe_3O_4$	1870 K (1597°C)

Optical properties

Refraction index $n_{\alpha}$: 2.42
Pure color: black

Links and Publications

Links

Wikipedia Fe3O4