Sugar

The Sugar is a gold mine located in Alaska.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: Sugar  

State:  Alaska

County:  na

Elevation:

Commodity: Gold

Lat, Long: 64.58556, -165.34306

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Satelite image of the Sugar

Sugar MRDS details

Site Name

Primary: Sugar


Commodity

Primary: Gold


Location

State: Alaska
District: Nome


Land Status

Not available


Holdings

Not available


Workings

Not available


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant:


Physiography

Not available


Mineral Deposit Model

Model Name: Placer Au-PGE


Orebody

Not available


Structure

Not available


Alterations

Not available


Rocks

Not available


Analytical Data

Not available


Materials

Ore: Gold


Comments

Comment (Exploration): Status = Probably inactive

Comment (Geology): Age = Quaternary.

Comment (Production): Production Notes = Production from the high-level gravels of the general area totaled about 100,000 ounces by 1903 (Collier and others, 1908).

Comment (Workings): Workings / Exploration = The workings at the Sugar mine were underground and included a shaft about 100 feet deep.

Comment (Reference): Primary Reference = Collier and others, 1908

Comment (Deposit): Model Name = Alluvial placer Au (Cox and Singer, 1986; model 39a).

Comment (Geology): Geologic Description = The Sugar mine is one of several near the divide between upper Anvil Creek (NM236) and Dexter Creek (NM303) at surface elevations of about 450 to 600 feet, where high-level gravels were placer mined for gold. These deposits were in gravels that ranged from a few feet to more than 200 feet thick and commonly were very rich (Brooks and others, 1901; Collier and others, 1908). The richest pay was near bedrock and in decomposed or fractured bedrock. The high-level gravels were mined mostly by drifting, but some hydraulic mining also took place. At the Sugar mine, as at the nearby Snowflake mine (NM241), the pay streaks were staked. There was a 10-foot-thick pay section on an older gravel surface at a depth of about 100 feet. Drilling through the older gravel reached bedrock at 205 feet, where gold was present on the bedrock surface (Collier and others, 1908). A 100-foot-deep shaft 300 feet southeast of the Sugar mine, penetrated 4 feet of muck and silt, 25 feet of loose blue gravel containing gold colors, 51 feet of decomposed schist, 10 feet of washed gravel and schist, and 20 feet of schist; several exploration workings were driven off this shaft. About 100 feet southwest of this shaft, a 40-foot-deep prospect pit encountered 20 feet of brown gravel, 4 feet of blue clay and gravel, and 16 feet of yellow sandy clay and gravel. The high-level gravels were originally interpreted to be alluvial deposits in stream channels of former drainage systems, but more recent interpretations describe them as glacial outwash-related material (Cobb, 1973 [B 1374]; Nelson and Hopkins, 1972). The presence of erratic granite boulders and other exotic rock types suggests a glacial origin, but the exotic clasts are commonly in near-surface materials and not distributed throughout the high-level gravels (Moffit, 1913). The origin of the high-level gravels thus still seems in question. The richness of some of the placers suggests extensive reworking, proximity to lode sources, or both.? Bedrock is mostly marble, in contact with graphitic schist nearby to the north, probably of early Paleozoic protolith age (Hummel, 1962 MF 247]; Sainsbury, Hummel, and Hudson, 1972 [OFR 72-326]; Nelson and Hopkins, 1972; Till and Dumoulin, 1994; Bundtzen and others, 1994).


References

Reference (Deposit): Bundtzen, T.K., Reger, R.D., Laird, G.M., Pinney, D.S., Clautice, K.H., Liss, S.A., and Cruse, G.R., 1994, Progress report on the geology and mineral resources of the Nome mining district: Alaska Division of Geological and Geophysical Surveys, Public Data-File 94-39, 21 p., 2 sheets, scale 1:63,360.

Reference (Deposit): Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.

Reference (Deposit): Sainsbury, C.L., Hummel, C.L., and Hudson, Travis, 1972, Reconnaissance geologic map of the Nome quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-326, 28 p., 1 sheet, scale 1:250,000.

Reference (Deposit): Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.

Reference (Deposit): Moffit, F.H., 1913, Geology of the Nome and Grand Central quadrangles, Alaska: U.S. Geological Survey Bulletin 533, 140 p.

Reference (Deposit): Collier, A. J., Hess, F.L., Smith, P.S., and Brooks, A.H., 1908, The gold placers of parts of Seward Peninsula, Alaska, including the Nome, Council, Kougarok, Port Clarence, and Goodhope precincts: U.S. Geological Survey Bulletin 328, 343 p.

Reference (Deposit): Brooks, A.H., Richardson, G. B., and Collier, A. J., 1901, Reconnaissance in the Cape Nome and Norton Bay regions, Alaska, in 1900: U.S. Geological Survey Special Publication, p. 1-180.

Reference (Deposit): Nelson, C.H., and Hopkins, D.M., 1972, Sedimentary processes and distribution of particulate gold in the northern Bering Sea: U.S. Geological Survey Professional Paper 689, 27 p., 1 plate.

Reference (Deposit): Till, A.B., and Dumoulin, J.A, 1994, Geology of Seward Peninsula and St. Lawrence Island, in Plafker, G., and Berg, H.C., eds., The Geology of Alaska: Geological Society of America, The Geology of North America, DNAG, v. G-1, p. 141-152.

Reference (Deposit): Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.

Reference (Deposit): Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p.


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