Constituent Tamarugite | SSHADE

Processing math: 47%

Constituent

Name: Tamarugite
IMA name: Tamarugite

Class: non-silicate mineral
Compound type: sulfate

Constituent abundance in material

Relevance: main - minor
Arrangement: in multi-phases
Mass fraction: 0.06 $\pm$ 0.1

Chemical composition

Formula: $NaAl(SO_4)_2 \bullet 6(H_2O)$
Chemical formula: NaAl(SO4)2•6(H2O)
Elemental formula: (Na+) Al S2 O10 (O-)4 H12
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Na^+$	Sodium cation	element	1		constituent cation	main
	$Al$	Aluminium	element	1		constituent element	main
	$(SO_4)^{2-}$	Sulfate anion	chemical function	2		anionic radical	main
	$H_2O$	Water	molecule	6		hydration	main

Chemical functions and bonds

Chemical functions

	Function	Number	Relevance
	$(SO_4)^{2-}$	2
	$R-OH$	2	main

Chemical bonds

	Bond	Number	Relevance
	$-O-H$	2	main
	$\dddot - \dddot - \dddot - S \dddot - O^{-1/2}$	4

Oxides composition

Oxides

Formula	$Na_{2}O$	$Al_{2}O_{3}$	$H_{2}O$	$SO_{3}$
Mass fraction (%)	8.85	14.56	30.87	45.73

Classifications

Strunz

Class: sulfates - chromates - molybdates - tungstates (07)
Division: sulfates (selenates, etc.) without additional anions, with H2O (07.C)
Family: with medium-sized and large cations (07.CC)
Code: 07.CC.10

Dana

Major class: sulfates, chromates, selenates (VI)
Class: hydrated acid and sulfates (29)
Type: where AB(XO4)2.x(H2O) (29.05)
Group: -Tamarugite- group (29.05.03)
Code: 29.05.03.01

Phase type: crystalline

Crystallography

Crystal system: monoclinic
Crystal class: prismatic
Crystal class symbol: 2/m (C2h)
Crystal spacegroup: P2(1)/c

Physical properties

Molar mass: 350.19 $g/mol$
Density: 2.06 $g/cm^3$

Optical properties

Refringence type: biaxial
Refringence sign: positive
Birefringence: 0.0130
Refraction index $n_{\alpha}$: 1.484
Refraction index $n_{\beta}$: 1.486
Refraction index $n_{\gamma}$: 1.497
Color: colorless
Diaphaneity: transparent
Luster: vitreous