Sylvite | SSHADE

Mineral phase

IMA name: Sylvite

Name and identifiers

CAS number: 7447-40-7

Class: non-silicate mineral
Compound type: halide

Chemical composition

Formula: $KCl$
Chemical formula: KCl
Elemental formula: (K+) (Cl-)
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$K^+$	Potassium(1+) cation	element	1		constituent cation	main
	$Cl^-$	Chloride anion	element	1		constituent anion	main

Composition comments: common impurities: Br,CO2

Oxides composition

Oxides

Formula	$K_{2}O$	$Cl$
Mass fraction (%)	63.18	47.55

Oxides comments

-10.73 % -O=Cl2

Classifications

Strunz

Class: halides (03)
Division: simple halides, without H2O (03.A)
Family: M:X = 1:1, 2:3, 3:5, etc. (03.AA)
Code: 03.AA.20

Dana

Major class: halides (IV)
Class: anhydrous and hydrated halides (09)
Type: where AX (09.01)
Group: Halite group (09.01.01)
Code: 09.01.01.02

Crystallography

Phase type: crystalline
Crystal system: isometric (cubic)
Crystal class: hexoctahedral
Crystal class symbol: m-3m (Oh)
Crystal spacegroup: Fm-3m

Physical properties

Molar mass: 74.55 $g/mol$
Density: 1.99 $g/cm^3$

Thermodynamical properties

State NTP: solid

Optical properties

Refringence type: isotropic
Refraction index $n_{\alpha}$: 1.49
Pure color: colorless
Color: white, yellowish white, reddish white, bluish white, brownish white
Diaphaneity: transparent to translucent
Luster: vitreous

Links and Publications

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