Mineral - Artinite
Artinite
Chemical Properties
Mineral Class
Carbonates
Toxicity
none
Formula
Mg₂(CO₃)(OH)₂·3H₂O
Unit Cell
a=16.56 b=6.30 c=6.22 β=100° Z=2
Physical Properties
Hardness
2.5
Streak
white
Density
Normal (2-3,5)
Cleavage
Perfect after {100}, good after {001}
Fracture
Tenacity
Brittle
Optical Properties
Color
white
Birefringence
0.068
Luster
Vitreous,
Pearly
Transparency
translucent,
transparent
Pleochroism
Geomineralogical Properties
Crystal System
monoclinic
Point Group
monoclinic-prismatic - 2/m
Space Group
C2/m (12)
Habit
spherical, acicular, radial
Formation
Secondary, through the alteration of ultramafic rocks (e.g. serpentinites)
Paragenesis
Twinning
Rarity
Rather rare
Synonyms
Artinite
Composition
Elements
Mass
CO₂
22.36
MgO
40.97
H₂O
36.62
Italy (Palache et al. 1952)
Name and first discovery : Named after the Italian mineralogist Ettore Artini (1866-1928). First described in 1902.
Chemistry :
Synonyms :
Varieties :
Abbreviation : Type
literature
Palache, C., Berman, H., & Frondel, C. (1952). Dana's system of mineralogy. Geologiska Föreningen i Stockholm Förhandlingar , 74 (2), 218-219.