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Serpentine
Serpentine
Magnesium Iron Silicate Hydroxide
(Mg3[Si2O5](OH)4)
Serpentine - the Russian name is "zmeevik".
Name: serpentine - from latin "serpens", the snake (a surface of units frequently smooth and brilliant, as a snake skin).
Singony: monoclinic or rhombic.
Color: white, yellowish, more often green (from light up to dark, almost black), because of an impurity of iron.
Shine: glass, fat, dim up to silky at fibrous differences.
Break: from equal up to like-shell.
Cleavage: rather perfect, but it is observed only at rare large slabs allocations (~5 mm in a diameter).
Hardness: 2.5 - 3.5 on Mohs scale.
Origin is the hydrothermal: serpentines - products of hydrothermal metamorphizm (serpentenize) of ultra basic and any basic ores or dolomite.
Any filtering underground waters which contain carbonic acid, underground or ascending from the magmatic center - transform olivine and ortopyroxene into serpentine.
Group of serpentine include five mineral kinds: antigorite (Mg, Fe2+)3Si2O5(OH)4; chrizotile (clinochrizotile, ortochrizotile, parachrizotile) Mg3Si2O5(OH)4; lizardite Mg3Si2O5(OH)4.
Some kinds of serpentines - beautiful decorative-ornamental gemstones.
The version of antigorite - bouenite is reminded jade and is used as an ornamental gemstone.
Noble serpentine (ophite) - has more light color and some transparence.
Ordinary serpentine - the rock ore which is formed sometimes the whole mountains, it has more dark color and opaque.
There are a lot of deposits of serpentine in South Ural, Altay, Transbaikaliya (river Sludyanka, Verhneudinsk and so forth), in Saxony, in Alpes and so forth.
It is used for hand-made articles:
jewelry boxes,
vases,
candelabrums,
desk sets,
jewelry
and so on, and also for preparation of bitter salt.
Serpentine gemstone wares:
Jewelry boxes
Jewelry boxes with gemstone pictures
Jewelry boxes
Desk sets
Desk sets
Ashtrays
Ashtrays
Candle holders
Candelabra
Vases
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