
General Information:

Chemical Formula:
NaAl4Fe+++7(PO4)5(P+++++Mo++++++12O40)(OH)16·56(H2O)

Composition:
(Molecular Weight = 4,099.90 gm)
Sodium 0.56 %
NaAluminum 2.63 %
AlIron 9.54 %
FeMolybdenum 28.08 %
MoPhosphorus 4.53 %
P Hydrogen 3.15 %
H Oxygen 51.51 %
O 
Empirical Formula:
NaAl4Fe3+7(PO4)5PMo12O40(OH)16·56(H2O)

Environment:
Biotite rich molybdenum-bearing pegmatite.

IMA Status:
Approved IMA

Locality:
Cumobabi, SW of Cumpas, Sonora, Mexico.

Name Origin:
Named for the similarity to mendozavilite.
Physical Properties:

Cleavage:
[???] Perfect

Color:
yellow or light yellow.

Density:
3.35

Hardness:
1 - Talc

Luster:
Vitreous (Glassy)

Streak:
yellow white
More details...