Secondary Minerals – May 24

This gallery features secondary minerals, which form by the oxidation of primary minerals through the actions of meteoric water. The oxygen in the atmosphere of Earth distinguishes the planet from the rest in the solar system. The electronic interaction of oxygen with metals causes absorption of visible light, generating vivid colors. This gallery features arsenbrackebuschite, atacamite, bariopharmacosiderite, becquerelite, caledonite, clinochlore, cornetite, curite, fejerite, honessite, parahopeite, pseudomalachite, spencerite, uvarovite and willemite.

This gallery contains 20 specimens.