General Information: Chemical Formula:MgO
Composition:(Molecular Weight = 40.30 gm)
Magnesium 60.30 %
MgOxygen 39.70 %
O Empirical Formula: MgO
Environment:Contact metamorphism of dolomites and magnesites.
Locality:Monte Somma and Predazzo, Italy.
Name Origin:From the Greek peri - "around" and klao - "to cut."
Physical Properties: Cleavage:[001] Perfect, [010] Perfect, [100] Perfect
Color:brownish yellow, colorless, green, gray white, or yellow.
Density:3.67 - 3.9, Average = 3.78
Diaphaniety:Transparent to translucent
Habits:Granular - Generally occurs as anhedral to subhedral crystals in matrix., ,
Hardness:6 - Orthoclase
Luminescence:Fluorescent, Long UV=light yellow.
Luster:Vitreous (Glassy)
Streak:white
More details...