Astrophyllite is heavy, soft and fragile. Astrophyllite forms a bladed, radiating stellate aggregate S Matrix mineral usually found in cavities and fissures in felsic igneous rocks. Big-flattened crystals shift color from brown to flashy bronze as the stone is moved. Bright gold flashy dendrites is a very rare brown to gold-yellow hydrous potassium iron titanium silicate mineral.
* Scientific proof may not be available to substantiate these claims.