Color is bright straw yellow to brown-yellow or brown. Luster is vitreous to silky. Specimens are translucent to transparent. Crystal Habits include acicular to fibrous crystals in radiating sprays and in fibrous crusts. Cleavage is absent.
Fracture is uneven.
Streak is white. Associated Minerals include limonite , triphylite , rockbridgeite , beraunite , laueite and other phosphate minerals. Best Field Indicators are color, locality, crystal habit, associations and lack of cleavage.