The Boulder Creek 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
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Boulder Creek MRDS details
Site Name
Primary: Boulder Creek
Commodity
Primary: Gold
Secondary: Molybdenum
Location
State: Alaska
District: Chistochina
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 (Reference): Primary Reference = Richter and Matson, 1968
Comment (Geology): Age = Holocene placer.
Comment (Workings): Workings / Exploration = The area was prospected in the mid 1930s. Boulder Creek is almost certainly one of two unnamed gold-bearing creeks described briefly by Moffit (1938, p. 50-51) as 'two short streams that flow eastward from the divide at the head of Grubstake Creek into Porcupine Creek carry sufficient gold to encourage prospecting.' The other unnamed east-flowing auriferous creek is almost certainly Slope Creek (GU020). Moffit (1954, p. 195) also refers to easterly flowing, gold-bearing streams in the vicinity, one of which is probably Boulder Creek. Richter (1966) noted prospecting or small-scale placer mining in Boulder Creek.
Comment (Deposit): Other Comments = The association of stream sediment samples with anomalous gold and molybdenum near the elongate diorite pluton suggests that the intrusive and its contacts should be prospected for lode occurrences of gold and other metals.
Comment (Geology): Geologic Description = Boulder Creek is mainly underlain by altered volcanic rocks of the Pennsylvanian to Permian, Tetelna Formation. The mine approximately coincides with a dike-like intrusion of Jurassic diorite which cuts the Tetelna Formation. The dike-like intrusion strike north-northwest for at least a mile (Richter 1966; Richter and Matson, 1968, figures 4-8; WGM, written communication. 1980). Stream sediment samples collected on the dike and below it in Boulder Creek were anomalous in gold. Richter and Matson (1968) also found somewhat anomalous amounts of molybdenum (6 to 11 ppm) in stream sediments collected on or near the dike.
Comment (Deposit): Model Name = Placer Au (Cox and Singer, 1986; model 39a)
Comment (Production): Production Notes = Probably some gold was recovered during prospecting activities at the head of Boulder Creek.
Comment (Exploration): Status = Inactive
References
Reference (Deposit): MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
Reference (Deposit): Moffit, F.H., 1938, Geology of the Slana-Tok district, Alaska: U.S. Geological Survey Bulletin 904, 54 p.
Reference (Deposit): Richter, D.H., and Matson, N.A., Jr., 1972, Metallic mineral resources map of the Gulkana quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-419, 1 sheet, scale 1:250,000.
Reference (Deposit): Richter, D.H., 1966, Geology of the Slana district on south-central Alaska: Alaska Division of Geological and Geophysical Surveys Geological Report 2l, 36b p., 3 sheets, scale 1:63,360.
Reference (Deposit): Moffit, F.H., 1954, Geology of the eastern part of the Alaska Range and adjacent area: U.S. Geological Survey Bulletin 989-D, p. 63-218.
Reference (Deposit): Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Gulkana quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1247, 36 p.
Reference (Deposit): Richter, D.H., and Matson, N.A., 1968, Distribution of gold and some base metals in the Slana area, eastern Alaska Range, Alaska: U.S. Geological Survey Circular 593, 20 p.
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