Color is white, colorless, gray or pale yellow. Luster is vitreous. Transparency crystals are transparent to translucent. Crystal System is orthorhombic. Crystal Habits include acicular to more commonly tabular crystals, often radiated.
Cleavage is indistinct.
Streak is white. Associated Minerals include hopeite , parahopeite , phosphophyllite , tarbuttite , quartz and other pegmatitic minerals. Notable Occurrences are limited to Hagendorf, Bavaria, Germany and Reaphook Hill, South Australia. Best Field Indicators are crystal habit, associations, lack of distinct cleavage, locality and color.