Brown acicular crystals eminating from a round crystal. I have never seen analytics on the rounded center, but I assume they are also Whitmoreite. Bill Roberts once described the Whitmoreite crystals as "floating naval mines". There are several areas which show the Whitmorerite in a matrix of Ludlamite, Hureaulite, Phosphoferrite(?) and Arsenopyrite.
Whitmoreite
Formula
Fe2+Fe3+2(PO4)2(OH)2·4H2O
Crystal System
Monoclinic
Crystal Habit
Acicular, Radial, Aggregates
Cleavage
Good, None, None
Luster
Vitreous - Adamantine
Color
brown, greenish brown, light yellow brown, dark brown
