An arsenic antimony sulfide, forming flexible, hair-like yellow crystals. It's associated with intellectual stimulation but is highly toxic.
Lemon-Yellow, Golden-Yellow, forms flexible hair-like or fibrous crystals
Wakabayashilite is classified as a arsenic sulfide, sulfosalt mineral mineral which typically crystallizes in the orthorhombic system. Its chemical formula is [(As,Sb)6S9][As4S5]. Common crystal habits include fibrous.