Metallic ores occur in every kind of rock and some varieties of soil. The metallic minerals are concentrated into rich masses by igneous, hydrothermal, or erosional/weathering processes. Magmatic deposits result when the minerals settle to the bottom of the intrusive body and form thin, high‐grade layers.
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Metallic ores occur in every kind of rock and some varieties of soil. The metallic minerals are concentrated into rich masses by igneous, hydrothermal, or erosional/weathering processes. Magmatic deposits result when the minerals settle to the bottom of the intrusive body and form thin, high‐grade layers.