Lazulite
Al 2%, Fe 1%, H 2%, Mg 1%, O 10%, P 2%,

estimated elemental composition and molecular weight 
Minerals with the same name may vary widely in appearance and composition, and very few are >99% (reagent grade) pure.

Gram formula weight (molecular mass) = 358.07


Minerals may vary in elemental composition and impurity levels. The formula given is an approximation.
Wikipedia Page:

Lazulite
is defined with respect to the entities below:
The entities below are defined with respect to:
Lazulite
Mineral (generic)


chemical compound molecule metal molecular science reaction mechanism ionic material acid base geometry reactivity synthesis science knowledge chemistry Lewis