General Information:
Chemical Formula:
Li2CaAl4(PO4)4(OH)4
Composition:
(Molecular Weight = 609.80 gm)
Lithium 2.28 % Li
Calcium 6.57 % Ca
Aluminum 17.70 % Al
Phosphorus 20.32 % P
Hydrogen 0.66 % H
Oxygen 52.47 % O
Empirical Formula:
Li2CaAl4(PO4)4(OH)4
Environment:
Ca analog of palermoite.
IMA Status:
Approved IMA 1967
Locality:
Buranga lithium pegmatite, Gatumba, Rwanda.
Name Origin:
Named for Antonio Bertossa, director of the Geological Survey of Rwanda.
Physical Properties:
Cleavage:
[100] Good
Color:
light pink.
Density:
3.1
Hardness:
6 - Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
More details...