The Tate River area, approximately 80 km west of Mount Garnet, is a historic alluvial tin mining area. The McCord Granite, a member of the O'Brien’s Creek Super suite of granites, has intruded into Proterozoic age McDevitt Metamorphics. On the western and southern edge of the granite, extensive greisen alteration contains tin mineralisation. Errosion of the greisen has contributed to alluvial and eluvial deposits of tin close to the granite contact.

Tate River alluvial tin mining operations are reported from the late 1800s and the area supported several small syndicates up to the early 1980s; however, records are poor. The tin was understood to be coarse and produced a high-grade concentrate.

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