Astrophyllite is a rare mineral. It is hydrous potassium iron silicate with the formula ( K,Na )3(Fe++,Mn)7Ti2Si8O24(O,OH)7 It's name is derived from two Greek words, astron meaning star, and phyllon meaning leaf, and these descriptions are easily observed in the specimen. The crystals are described as bladed with a sub metallic shine dependant on the viewing angle. The whole of the specimen is a radiating, stellate, aggregate, with glimpses of the sub metallic shine, within a light coloured felsic matrix. Unfortunately it's origin is unknown.