Minerals

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General Information

Amazonite

Amazonite is a green variant of microcline feldspar. The name comes from the river Amazone, although the mineral cannot be found there.[1]

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Chemical & Physical Information

Trivial NameAmazonite
Chemical NameSilicate
Chemical FormulaK[AlSi3O8]
Density2,56-2,58 g·cm-3
Molar mass?
Hardness6-6,5
Crytal systemTriclinic
Unit cell?
Crystal habitPrismatic
FractureUneven, conchoidal
CleavageGood
ColourGreen, bleugreen
LusterGlass, pearl
StreakWhite
OpacityTranslucent
SafetySafe
ExtraColour due to traces of lead.
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Photos

Amazonite

(2 cm)

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Sources

[1] Wikipedia

[2] Specimen from my personal collection, photo taken by me.