Native element mineral

A mineral composed chiefly of one naturally occurring chemical element in uncombined form, including natural alloys and a few closely related compounds.

Mineral: A naturally occurring solid with an ordered atomic structure and a characteristic chemical composition. Native-element minerals are one chemical class within the broader mineral family.
Redox reaction: A chemical reaction involving the transfer of electrons between substances. Low oxygen availability or reducing conditions can favor elemental forms over oxidized compounds.
Gold: A dense, yellow metallic chemical element with symbol Au and atomic number 79. Gold is a familiar native metal because it resists oxidation and occurs in elemental form.
Sulfide mineral: A mineral in which sulfur is chemically combined with one or more metals or metalloids. Sulfides contain chemically bound sulfur, unlike native sulfur and native metals.
Metallurgy: The science and technology of extracting metals from ores and shaping them for use. Native metals can be worked directly, while compounds generally require extraction and reduction.
Chemical element: A pure substance defined by atoms with the same number of protons. Most members are minerals made predominantly from a single element.
Chemical potential: A measure of how a substance's free energy changes when its amount changes. It helps predict whether an element remains native or reacts to form a compound.
Native copper: Naturally occurring copper metal, commonly found as irregular masses, sheets, or branching forms. It is a native metal that can form conspicuous deposits in oxidized copper ores.
Oxide mineral: A mineral composed of oxygen combined with one or more other elements. Oxides show how readily many elements occur in compounds rather than in native form.
Gold mining: The extraction of gold from deposits using methods such as placer washing and hard-rock mining. Native gold's density and chemical resistance enable distinctive recovery methods.

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