Zoisit Edelsteinlexikon Utzipedia



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	1. Pictures 2. History 3. Education and discovery sites
	4. Application 5. Falsification and imitations 6. Literature 7. Weblinks
	Zoisite

Zoisite
Chemismus	Ca₂Al₃(SiO₄)₃OH
Mineral class	Group silicates (Sorosilikate) VIII/C.23-100 (after Strunz)
Crystal system	orthorhombisch
Crystal class	orthorhombisch-dipyramidal 2/m2/m2/m
Color	colorless, yellow, green, pink, red, blue, grey
Line color	white
Mohs Scale	6 to 7
Density (g/cm³)	3,15 to 3,37
Gloss	Glass to Perlmutt gloss or matt
Transparency	transparent, translucently to obscure
Break	Uneven or conchoidal
Fissileness	Completely after {100}, {001}
Habitus	Prismatic crystals, massive, radialstrahlige, stengelige aggregates, grainy
frequent crystal faces	(100), (101), (110)
Twin accomodation	no
Kristalloptik
Refractive index
Birefringence (optical orientation)	0,005-0,020 ; Biaxial +
Pleochroismus	Weak to strong (Tansanit)
Angle/dispersion of the Zes-axis	2v_z ~ 0° to 69°
weitere Eigenschaften
Phase conversions
Melting point
chemical behavior
similar minerals	Klinozoisit, Epidot, Tansanit, Thulit
Radioactivity	no
Magnetism	no
special characteristics	wärmeempfindlich, Farbänderungen möglich

	Pictures

	History For the first time 1805 on the Saualpe in Kärnten found, he was originally called Saualpit. Zoisit kept its name later by the Austrian buyer and mineral collecting tank victory mouth baron von Zois (1747-1819)

	Education and discovery sites Zoisit forms tertiarily under regional-metamorphic transformation of basic Magmatite to lime silicate rock, green slates and Eklogiten.Hoher pressure and water is a condition for its emergence. Zoisit is divided into the blue Tansanit, the manganiferous reddish Thulit and the green-black-red ruby Zoisit.

	Application All Varietäten finds as gem stone use.

	Falsification and imitations The valuable Tansanit is only falsified by glass or as Doublette.

	Literature

	Weblinks Specialized trade Michael Utzerath GmbH
	Weblinks Specialized trade Michael Utzerath GmbH

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