Difference between revisions of "Turquoise"

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{{Turquoise}}
 
{{Turquoise}}
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[[Image:Turquoise.JPG|left|framed|Persian turquoise]]<br clear="left" />

Latest revision as of 09:09, 11 December 2006

Turquoise
Chemical composition CuAl6(PO4)4(OH)8.5H2O
Crystal system Triclinic
Habit Botryoidal, massive, microcrystalline to granular
Fracture Conchoidal
Hardness 5.0 - 6.0
Refractive index 1.610-1.650
Specific gravity 2.30-2.90
Lustre Waxy
Persian turquoise