Identification Sphalerite Identification Sheet The principal zinc ore and a notorious deceiver: brilliant adamantine to resinous luster, six-direction cleavage, and a pale streak that …
Identification Magnetite Identification Sheet The strongly magnetic iron oxide: black streak, octahedral crystals, and a pull on the pocket magnet no lookalike can match.
Identification Garnet Group Identification Sheet Not one mineral but a family — hard, dense, and found in almost every metamorphic rock Rockies encounter.
