Carbonates: Artinite
Diagnostic card.
Mg 2 CO 3 (OH) 2 * 3 (H 2 O)
Singonia monoclinic
Hardness 2,5
Specific gravity 2
Cleavage is perfect
Color white, light gray
Color in powder white
Glitter from glass to silky
Artinite is a very rare mineral. It crystallizes in the monoclinic system. It is observed in the form of bundles formed from small needles, or in the form of veins and crusts with fibrous-radiant structure. Color grayish-white, shine silky.
Diagnostic signs.
Dissolves with rapid effervescence in dilute hydrochloric acid. He loses water when heated.
Origin.
The mineral is formed during the decomposition of serpentinite rocks under the action of waters containing carbonates.
Deposits and applications.
Artinite is found in the voids of asbestos in Val-Brutta (Val Malenco, Sondrio province). In a permanent association with serpentinite rocks, it occurs in Monte Fobé (Val d'Aosta region), Monte Ramazzo (Liguria region) and Viu (Turin province). In the marbles in the lower part of the Val Seriana it was identified together with hydromagnesite. This mineral is represented in serpentinites in Serbia and St. In the USA, in association with brucite and hydromagnesite, it occurs in ultrabasic rocks in Louning (Nevada), Huboken (New Jersey) and in the state of Vermont. Artinit has an exclusively scientific and collectivized significance.
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