O. Other arsenates with this chemical oddity include pharmacolite , guerinite and picropharmacolite , all of which are associated with sainfeldite. The mineral hureaulite is similar, but with a phosphate as the affected ion group. Color is mostly a pale pink, white or colorless. Luster is vitreous. Crystals are transparent to translucent.
Cleavage is absent.
Streak is white. Associated Minerals are pharmacolite , guerinite , picropharmacolite and other secondary arsenates. Notable Occurrences include Richelsdorf, Germany and Ste. Best Field Indicators are color, locality, associations and crystal habit.