Color: Black with a ting  yellow, brown or green.
Streak: Yellow , brown or gray.
Hardness: 5.5-6.5
Cleavage: is absent.
Fracture: Conchoidal
Transparent: Crystals are opaque.
Luster: A is greasy to submentallic.
 Uses: A minor ore of earth elements and uranium, sometimes cut as gemstones and mineral specimens.
 Where found:Ural Mountain, Russia, Norway, Sweden, Minas Gerias, Brazil, Canada, Wyoming, Colorado, USA. Arizona.