Gold Run

Mine, Probably inactive

Commodities and mineralogy

Main commodities Au
Other commodities Hg; platinum-group metals; W
Ore minerals cinnabar; gold; platinum-group metals; scheelite

Geographic location

Quadrangle map, 1:250,000-scale TE
Quadrangle map, 1:63,360-scale A-3
Latitude 65.067
Longitude -166.197
Nearby scientific data Find additional scientific data near this location
Location and accuracy Gold Run is a major south tributary to the Bluestone River and the location of the most extensive placer mining operations in the Teller A-3 quadrangle. Gold Run Creek and North Fork Bluestone River come together to form the north-flowing Bluestone River at a surface elevation of 190 feet. Sainsbury and others (1969) mapped the location of placer mining operations to include the first half mile of the Bluestone River below the mouth of Gold Run and over 4 miles of the main drainage of Gold Run upstream from its mouth. These operations were at surface elevations between about 190 and 345 feet. This is locality 81 of Cobb and Sainsbury (1972). Cobb (1975) summarized relevant references under the name 'Gold Run'.

Geologic setting

Geologic description

Bedrock in this drainage and its headwater tributaries is dominately a chlorite-bearing schist and amphibolite assemblage (Sainsbury, 1972). The lower 1.25 miles of the stream drains across a metapelitic schist assemblage. Both of these assemblages have local metamorphosed mafic intrusive bodies and both are of unknown but probable Paleozoic age. Sainsbury and others (1969) mapped the location of placer mining operations to include the first half mile of the Bluestone River below the mouth of Gold Run and over 4 miles of the main drainage of Gold Run upstream from its mouth. These operations, which involved extensive dredging, were at surface elevations between about 190 and 345 feet. Mining took place at various times between 1900 and 1946 but much of the dredging was between 1935 and 1940 (Cobb, 1975).
Gold is present on benches, old channels, and the present drainage. Some pay, particularly near the mouth of Alder Creek, was very rich containing $50 (1908) per cubic yard (Collier and others, 1908). The pay was in the lower gravels on bedrock and included some bedrock. A yellow clay was present at the base of the pay in some places. The gravels are at least in part coarse and locally include large greenstone boulders. Granitic boulders, exotic to the area, are present in some gravels. Some of the gold is coarse with a nugget as large as 22.25 ounces having been recovered (Smith, 1938). Anderson (1947) reported that scheelite was present in heavy mineral concentrates and Sainsbury and others (1969) reported that cinnabar and platinum-group metals were also present.
Geologic map unit (-166.199655041689, 65.0662300090983)
Mineral deposit model Alluvial Au placer (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Quaternary

Production and reserves

Workings or exploration Sainsbury and others (1969) mapped the location of placer mining operations to include the first half mile of the Bluestone River below the mouth of Gold Run and over 4 miles of the main drainage of Gold Run upstream from its mouth. These operations, which involved extensive dredging, were at surface elevations between about 190 and 345 feet along the main drainage. Various open-cut and hydraulicking methods have also been used. A prospect shaft at the pass between Gold Run and McAdam Creek encountered bedrock at 115 feet and some coarse gold.
Indication of production Yes
Reserve estimates Not defined; a prospect shaft at the pass between Gold Run and McAdam Creek encountered bedrock at 115 feet and some coarse gold. This is an area mapped as being mantled by moraine by Sainsbury (1972).
Production notes Yes, considerable from 1900 to at least 1946

References

MRDS Number A016073; M045403

References

Reporters Travis L. Hudson (Applied Geology)
Last report date 5/10/1998