General Information:
Chemical Formula:
Li(Mn++,Fe+++)PO4
Composition:
(Molecular Weight = 157.08 gm)
Lithium 4.42 % Li
Manganese 26.23 % Mn
Iron 8.89 % Fe
Phosphorus 19.72 % P
Oxygen 40.74 % O
Empirical Formula:
LiMn2+0.75Fe2+0.25(PO4)
Environment:
Granitic pegmatites.
Locality:
Stuart mine, Queen Mountain, Pala, San Diego Co., California.
Name Origin:
Named after the discoverer of the Pala pegmatite deposits, Sickler.
Physical Properties:
Cleavage:
[100] Good
Color:
dark brown or yellow.
Density:
3.4 - 3.45, Average = 3.42
Diaphaniety:
Opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Cleaveable - Easily cleaved into fragments.,
Hardness:
4 - Fluorite
Luminescence:
None.
Luster:
Earthy (Dull)
Streak:
light ochre brown
More details...