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 Corundum (Ruby and Sapphire) Identification Sheet The Mohs 9 anchor at the top of every field kit: ruby and sapphire are the same mineral, identified by extreme hardness and barrel-shaped…
Identification Malachite Identification Sheet A bright green copper carbonate recognized by its color, concentric banding, botryoidal habit, and effervescence in acid.
