Cobalt bloom
Erythrite
As
2
Co
3
O
8
.H2O
8
  
 
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) = 598.79


Minerals may vary in elemental composition and impurity levels.
Wikipedia Page:

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


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