General Information: Chemical Formula:KAlSi3O8
Composition:(Molecular Weight = 278.33 gm)
Potassium 14.05 %
K Aluminum 9.69 %
AlSilicon 30.27 %
SiOxygen 45.99 %
O Empirical Formula: KAlSi3O8
Environment:Granitic pegmatites, hydrothermal and metamorphic rocks.
Locality:Common world wide occurrences.
Name Origin:From the Greek mikron - "little" and klinein - "to stoop."
Physical Properties: Cleavage:[001] Perfect, [010] Good
Color:bluish green, green, gray, grayish yellow, or yellowish.
Density:2.56
Diaphaniety:Translucent to transparent
Habits:Blocky - Crystal shape tends to be equant (e.g. feldspars)., Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Hardness:6 - Orthoclase
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
Streak:white
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