Iron antimonate, often yellowish. It's a grounding stone associated with stability and Earth connection. (An alteration product of other antimony minerals).
Yellow, Brownish-Yellow, Greenish-Yellow, forms small prismatic or pyramidal crystals
Tripuhyite is classified as a antimonate mineral mineral which typically crystallizes in the tetragonal system. Its chemical formula is FeSbO4. Common crystal habits include fibrous to fine-grained aggregates.