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Minerals - Brucite | TerraCollect
Mineral - Brucite
Brucite
Mg(OH)â‚‚
Chemical Properties
Mineral Class
Oxides and Hydrxides
Toxicity
none
Formula
Mg(OH)â‚‚
Unit Cell
a=3.14 c=4.77 Z=1
Physical Properties
Hardness
2.5
Streak
white
Density
Normal (2-3,5)
Optical Properties
Color
white
brown
yellow
blue
Birefringence
0.020
Luster
Vitreous,
Pearly
Transparency
translucent,
transparent,
opaque
Pleochroism
Geomineralogical Properties
Crystal System
Composition
Elements
Mass
Fe₂O₃
0.10
MnO
0.84
MgO
68.29
Hâ‚‚O
30.74
USA (Palache et al. 1952)
Groups and Members
Brucite-Group
Karten-Ebenen
Geologische Karte
Satelliten Karte
Cleavage
Perfect after {0001}
Fracture
fibrous
Tenacity
Supple
trigonal
Point Group
ditrigonal-scalenohedral -
3
m
Space Group
P
3
m1 (164)
Habit
crusty,
spherical,
massive,
acicular,
kidney-shaped,
tabular,
grape-shaped
Formation
Metamorphism
Paragenesis
Twinning
Rarity
Common
Synonyms
Brucite
