Color is usually white or yellow. Luster is vitreous. Diaphaneity is translucent. Crystal Habits include thin crusts and coatings on pyrrhotite. Cleavage none observed.
Fracture is conchoidal to uneven.
Streak is white. Associated Minerals include amphibole group, garnet group, microcline, pyrite, pyrrhotite, siderite and sphalerite. None from white powdery species.