Constituent Mascagnite | SSHADE

Constituent

Name: Mascagnite
IMA name: Mascagnite

Class: non-silicate mineral
Compound type: sulfate

Constituent abundance in material

Relevance: main - major
Arrangement: single phase
Mass: 0.34 $\pm$ 0.002 $g$
Mass fraction: 1.0

Chemical composition

Formula: $(NH_4)_2SO_4$
Chemical formula: (NH4)2SO4
Elemental formula: (N+)2 H8 S O2 (O-)2
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$NH_4^+$	Ammonium ion	molecule	2		molecular ion	main
	$(SO_4)^{2-}$	Sulfate anion	chemical function	1		anionic radical	main

Chemical functions and bonds

Chemical functions

	Function	Number
	$(SO_4)^{2-}$	1

Chemical bonds

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

Oxides composition

Oxides

Formula	$SO_{3}$
Mass fraction (%)	60.59

Oxides comments

calculated with N2O5 as (NH4)2O = 39.41%

Classifications

Strunz

Class: sulfates - chromates - molybdates - tungstates (07)
Division: sulfates (selenates, etc.) without additional anions, without H2O (07.A)
Family: with only large cations (07.AD)
Code: 07.AD.05

Dana

Major class: sulfates, chromates, selenates (VI)
Class: anhydrous acid and sulfates (28)
Type: where (A+)2XO4 (28.02)
Group: -Mascagnite- group (28.02.01)
Code: 28.02.01.01

Phase type: crystalline

Crystallography

Crystal system: orthorhombic
Crystal class: dipyramidal
Crystal class symbol: mmm (D2h)
Crystal spacegroup: Pnma

Texture: monocrystalline

Physical properties

Molar mass: 132.14 $g/mol$
Density: 1.768 $g/cm^3$

Optical properties

Refringence type: biaxial
Refringence sign: positive
Birefringence: 0.0130
Refraction index $n_{\alpha}$: 1.52
Refraction index $n_{\beta}$: 1.523
Refraction index $n_{\gamma}$: 1.533
Dispersion V: relatively strong r > v
Color: colorless, white, gray, grayish yellow, yellow, brown
Diaphaneity: transparent to opaque
Luster: vitreous