Constituent Olivine | SSHADE

Constituent

Name: Olivine
IMA name: Olivine group

Class: silicate mineral
Compound type: nesosilicate
Comments: Phenocrysts of olivine

Constituent abundance in material

Relevance: main - major
Arrangement: inclusion

Chemical composition

Formula: $A_{2-3}(SiO_4)_{1-2} \ \ \ \ \$ where $A = Mg,Fe^{2+},Fe^{3+},Ni$ and/or $Mn$
Chemical formula: (Mg,Fe2+,fe3+,Mn,Ni)(2-3)(SiO4)(1-2)
Elemental formula: (Mg)0-2 (Mn)0-2 (Ni)0-2 (Fe2+)0-2 (Fe3+)0-2 (Si)1-2 (O)4-8
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Mg$	Magnesium	element	0 - 2		constituent element	main
	$Mn$	Manganese	element	0 - 2		constituent element	main
	$Ni$	Nickel	element	0 - 2		constituent element	main
	$Fe^{2+}$	Iron(II) cation	element	0 - 2		constituent element	main
	$Fe^{3+}$	Iron(III) cation	element	0 - 2		constituent element	main
	$Si$	Silicon	element	1 - 2		constituent element	main
	$O$	Oxygen	element	4 - 8		constituent element	main

Chemical functions and bonds

Chemical functions

	Function	Number
	$(SiO_4)^{4-}$

Chemical bonds

	Bond	Number
	$\geq Si-O^-$	4

Oxides composition

Oxides

Formula	$MgO$	$MnO$	$FeO$	$Fe_{2}O_{3}$	$NiO$	$SiO_{2}$
Mass fraction (%)

Classifications

Strunz

Class: silicates (09)
Division: nesosilicate (09.A)
Family: without additional anions; cations in octahedral [6] coordination (09.AC)
Code: 09.AC.05

Dana

Major class: silicates (VIII)
Class: nesosilicate insular SiO4 groups only (51)
Type: with all cations in octahedral [6] coordination (51.03)
Group: Olivine group (51.03.01)

Phase type: crystalline

Crystallography

Crystal system: various
Crystal class: various
Crystal class symbol: various
Crystal spacegroup: various

Texture: polycrystalline

Physical properties

Molar mass: 140.69-351.71 $g/mol$
Density: 3.21-4.6 $g/cm^3$

Optical properties

Refringence type: unknown
Refringence sign: unknown
Diaphaneity: transparent to opaque
Luster: various