Mineral phase
- IMA name
- Periclase
- Secondary names
- Magnesia
- Class
- non-silicate mineral
- Compound type
- oxide-hydroxide
- Formula
- $MgO$
- Chemical formula
- MgO
- Elemental formula
- Mg O
- Isotope mixture type
- terrestrial abundance
- Oxides
-
Formula $MgO$ Mass fraction (%) 100.0
Strunz
- Class
- oxides - hydroxides - arsenites (04)
- Division
- metal:oxygen = 2.1 and 1:1 (04.A)
- Family
- M:O = 1:1 (and up to 1:1.25) with small to medium-sized cations only (04.AB)
- Code
- 04.AB.25
Dana
- Major class
- oxides and hydroxides (III)
- Class
- simple oxides (04)
- Type
- with a cation charge of 2+ (A++O) (04.02)
- Group
- Periclase group (Isometric, Fm3m) (04.02.01)
- Code
- 04.02.01.01
- Phase type
- crystalline
- Crystal system
- isometric (cubic)
- Crystal class
- hexoctahedral
- Crystal class symbol
- m-3m (Oh)
- Crystal spacegroup
- Fm-3m
- Molar mass
- 40.3 $g/mol$
- Density
- 3.67 - 3.9 $g/cm^3$
- State NTP
- solid
- Refringence type
- isotropic
- Refraction index $n_{\alpha}$
- 1.74
- Pure color
- colorless
- Color
- colorless, gray white, yellow, brownish yellow, green, black
- Diaphaneity
- transparent to translucent
- Luster
- vitreous