CHEMISTRY - PbZn(VO4)(OH)
CRYSTALLOGRAPHY - Orthorhombic
CRYSTAL GROWTH AND HABITS - Crystals are typically pyramidal, prismatic or tabular; commonly stalactitic, drusy, botryoidal, fibrous to massive.
COLOR AND OPTICAL PROPERTIES - Normally brownish to black with a reddish hue; transparent to translucent.
HARDNESS - 3 - 3.5
SPECIFIC GRAVITY - 6.2
LUSTER - Greasy to vitreous
STREAK - Orange to reddish brown
BREAKABILITY - Uneven fracture; Brittle
OCCURRENCE - Descloizite is found in the oxidized zone of vanadium bearing mineral veins.
ASSOCIATED MINERALS - Vanadinite, Mottramite, Pyromorphite, Mimetite, Wulfenite
MINERAL NAME - Named in honor of the French mineralogist Des Clozeaux who first describe the mineral.