Rutile and a number of other metallic ore minerals are mined together from "heavy mineral sands," which are sedimentary deposits.
The weathering of igneous and metamorphic rocks that include abundant microscopic grains of high-specific-gravity minerals such as Rutile, ilmenite, anatase, brookite, leucoxene, perovskite, and titanite results in these deposits (also known as sphene). The more refractory mineral particles in these rocks are carried into the sea coastal environment as the weather, where they are sorted and concentrated according to density by wave and current action. These sediments can become mineable deposits if the circumstances are favorable and heavy minerals are present.
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