Navajoite

General Information:
 Chemical Formula:
V2O5·3(H2O)
 Composition:
(Molecular Weight = 235.93 gm)
Vanadium 43.18 % V 
Hydrogen 2.56 % H 
Oxygen 54.25 % O 
 Empirical Formula:
V5+2O5·3(H2O)
Physical Properties:
 Cleavage:
None
 Color:
dark brown.
 Density:
2.56
 Diaphaniety:
Opaque
 Hardness:
1.5 - Between Talc and Gypsum
 Luster:
Adamantine
 Streak:
brown
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