Placer cinnabar has been known on Arcana Creek since 1941, when the cinnabar was traced upstream to discover the Red Top Mine (DI002) ((Sainsbury and MacKevett, 1965). Apparently, however, no placer mining took place on Arcana Creek or its tributaries until 1969, when Clarence Wren of Dillingham operated a small placer mine about 0.4 mile north of the Red Top Mine on the creek that extends north from the mine (Clarence Wren, personal communication, 1970; D.J. Grybeck, unpublished field notes, 1970). Panned samples from the lower part of the creek were often exceptionally rich in cinnabar with nuggets up to 1/2 inch in size; pans in the upper part of the creek where it flowed on bedrock had only small amounts of cinnabar. In 1969, Wren mined with with indifferent results using a front-end loader, D6 tractor, and a sluice box. He attributed the results to inexperience and inappropriate recovery methods. About 5 gallons of cinnabar concentrate was produced. Apparently, there has been no mining since. The source of the cinnabar is almost certainly the Red Top deposit at the head of this creek.The rocks in the area consist of interbedded, very fine- to very coarse-grained graywacke, calcareous graywacke, and siltstone. Wilson and others (2006) include them in their 'Graywacke of Kululak Bay' unit of Middle and Upper Jurassic age.