Is a chlorovanadate with the chemical formula Pb5(VO4)3Cl.
It is found as result of chemical alteration of pre-existing minerals. It is found in several locations around the world and this specimen comes for the famous lead mines near Mibladen, Morocco. The hardness is 3.5 from the Mohs scale.
Size: 87.5x41x28 mm.
Weight: 154 grams