An exceptional specimen of Enargite altering to Luzonite. The black blades of Enargite, which can reach 1.1 cm in length, have excellent luster, and the striations on the faces add greatly to the aesthetics. The Luzonite is growing on the terminations of many of the crystals of Enargite. The Enargites surround a bed of beautiful lustrous Pyrites. Ex. Charlie Key.