General
Formula: Mg(OH)2
Crystal system: Trigonal
Distinguishing features
N // (PPL)
Color: colourless
Pleochrosim: –
Relief: moderate
Cleavage: good in 1 direction
N + (XPL)
Isotropy/Anisotropy: anisotropic
Interference color: O
Extinction angle: parallel / 0° / straight
Twins: –
Uniaxial/biaxial: Uniaxial (+)
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