General Information:
Chemical Formula:KAlSi2O6
Composition:(Molecular Weight = 218.25 gm)Potassium 17.91 %
K Aluminum 12.36 %
AlSilicon 25.74 %
SiOxygen 43.99 %
O Empirical Formula: KAl(Si2O6)
Environment:Acid volcanic rocks.
IMA Status:Approved IMA
Locality:Bearpaw Mountains., Montana, USA.
Name Origin:From the Greek leukos - "white."
Physical Properties: Cleavage:[110] Indistinct
Color:colorless, gray, yellow gray, or white.
Density:2.47
Diaphaniety:Translucent to transparent
Habits:Crystalline - Coarse - Occurs as well-formed coarse sized crystals., ,
Hardness:6 - Orthoclase
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
Streak:white
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