Tavorite

General Information:
 Chemical Formula:
LiFe+++(PO4)(OH)
 Composition:
(Molecular Weight = 174.77 gm)
Lithium 3.97 % Li
Iron 31.96 % Fe
Phosphorus 17.72 % P 
Hydrogen 0.58 % H 
Oxygen 45.77 % O 
 Empirical Formula:
LiFe3+(PO4)(OH)
 Locality:
Sapucaia pegmatite, Galileia, Minas Gerias, Brazil.
 Name Origin:
Named for Elysairio Tavora (1911-), mineralogist, University of Brazil, Rio de Janerio, Brazil.
Physical Properties:
 Cleavage:
[???] Distinct, [???] Distinct, [???] Distinct
 Color:
grass green, greenish yellow, yellow green, or yellow.
 Density:
3.288
 Diaphaniety:
Transparent to Translucent
 Habits:
Crystalline - Fine - Occurs as well-formed fine sized crystals., ,
 Hardness:
5 - Apatite
 Luster:
Vitreous (Glassy)
 Streak:
light green
More details...