Magnesium Hydroxide
Mg(OH)2
|
Chemical name
Magnesium Hydroxide |
|
Mineral name
Brucite |
|
Chemical formula
Mg(OH)2 |
|
Melting point [°C]
350 |
|
Crystal system
trigonal |
|
Crystal Class
Hexagonal scalenohedral (3m)
H-M symbol: (3 2/m) |
|
Space Group
P3m1 No. 164 |
|
Unit cell
a [Å]:0.312nm b [Å]: c [Å]:0.473nm |
|
Molecular weight [g/mol]
58.83 |
|
Mohs hardness
2.5 to 3 |
|
Density [g/cm3]
2.3446 |
|
Cleavage
Perfect on {0001} |
|
Fracture / Tenacity
Irregular, sectile |
|
Color
White, pale green, blue, gray; honey-yellow to brownish red |
|
Streak
White |
|
Transparency
Transparent |
|
Luster
Vitreous to pearly |
|
Optical character
Uniaxial (+) |
|
Refractive Index
nω = 1.56–1.59
nε = 1.58–1.60 |
|
Birefringence δ
0.02 |
|
Other
Pyroelectric |
|
Solubility in water
0.00064 g/100 mL (25 °C) |
