The Geology of Gold Deposits - Nevada Outback
Magnetite and hematite are the most common minerals in black sands, but in some deposits there are other heavy minerals which can also be valuable such as cassiterite, monazite, ilmenite, chromite, native platinum and associated metals, and even someMetallic Deposits - CliffsNotes,Metals such as chromium, platinum, nickel, copper, and iron can precipitate as sulfide minerals in a cooling body of magma. Magmatic deposits result when the minerals settle to the bottom of the intrusive body and form thin, high‐grade layers.NASA - Prospecting from Orbit,Minerals such as muscovite, alunite, kaolnite, and iron sulfide are typically found in abundance around copper deposits. Some of these, such as iron sulfide, react with surface water and oxygen to form highly visible markers (Rowan et al. 2002).