Artinite

General Information: Chemical Formula:Mg2(CO3)(OH)2·3(H2O) Composition:(Molecular Weight = 196.68 gm)Magnesium 24.72 % MgHydrogen 4.10 % H Carbon 6.11 % C Oxygen 65.08 % O  Empirical Formula: Mg2(CO3)(OH)2·3(H2O) Environment:Low-temperature hydrothermal mineral in veins and crusts in serpentinized ultrabasic rocks. Locality:Val Brutta, and Francia in the Val Lanterna, Lombardy, Italy. Name Origin:Named after the Italian mineralogist, Ettore Artini (1866-1928), mineralogist at the University of Milan.Physical Properties: Cleavage:[100] Perfect, [001] Good Color:white. Density:2 - 2.03, Average = 2.01 Diaphaniety:Translucent Habits:Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Encrustations - Forms crus t-like aggregates on matrix. Hardness:2.5 - Finger Nail Luminescence:None. Luster:Silky Streak:whiteMore details...

Mg2(CO3)(OH)2 3(H2O)