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 Azurite Identification Sheet The deep azure-blue copper carbonate, malachite's constant companion, confirmed by its light blue streak and acid reaction.
Identification Malachite Identification Sheet A bright green copper carbonate recognized by its color, concentric banding, botryoidal habit, and effervescence in acid.
Identification Rhodochrosite Identification Sheet Colorado's rose-pink state mineral: a manganese carbonate identified by color, low hardness, rhombohedral cleavage, and a warm-acid react…
Identification Fluorite Identification Sheet The mineral that gave fluorescence its name — and comes in nearly every color imaginable.
