KAlSi3O8Triclinic
Amazonite
KAlSi3O8
SilicatesChemical FormulaKAlSi3O8
Crystal SystemTriclinic
Mohs Hardness6
Specific Gravity2.56
ColorGreen to blue-green
LusterVitreous
StreakWhite
CleavageTwo directions
FractureUneven
Occurrence
Green variety of microcline feldspar. Named after Amazon River.