Mindat Logo

Alfred Creek; Alaska Gold Mining. Co.; Caribou Creek Mine, Willow Creek District, Matanuska-Susitna Borough, Alaska, USA

Latitude: 61°57'0"N
Longitude: 147°28'47"W
Exact locations of placer mines are unknown.
Location: Location given is arbitrary point on Alfred Creek (between Pass Creek and Bench Creek, both tributaries of Alfred Creek, because exact location of placers unknown. Accurate within 2 miles. Locality 88 of Cobb (1972) and locality 61 of MacKevett and Holloway (1977).
Geology: Placer gold found along length of stream. Lower part of the stream course cuts through Cretaceous shale, while upstream it cuts through Jurassic sandstone and shale. The Jurassic sandstone and shale is cut by small dikes. Ridge north of creek capped by Tertiary volcanic rocks that may be underlain by conglomerate, which could be source of placer gold in the creek (Martin and Mertie, 1914).
Workings: Small scale placers worked sporadically for many years. Total production said to be about 70-75 fine ounces of gold. Minor amounts of platinum are found with gold.
Age: Quaternary
Production: Total production said to be about 70-75 fine ounces of gold.

Commodities (Major) - Au; (Minor) - Pt
Development Status: Yes; small
Deposit Model: Placer Au (Cox and Singer, 1986; model 39a)

References

Brooks, A.H., 1913, Mineral resources of Alaska, report on progress of investigations in 1912: U.S. Geological Survey Bulletin 542, 308 p. Brooks, A.H., 1925, Alaska's mineral resources and production, 1923: U.S. Geological Survey Bulletin 773-A, p. 3-52. Brooks, A.H., and Capps, S.R., 1924, The Alaska mining industry in 1922: U.S. Geological Survey Bulletin 755-A, p. 1-56. Chapin, Theodore, 1918, The Nelchina-Susitna region, Alaska: U.S. Geological Survey Bulletin 668, 67 p. Cobb, E.H., 1972, Metallic mineral resources map of the Anchorage quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-409, 1 sheet, scale 1:250,000. Cobb, E.H., 1973, Placer deposits of Alaska: U.S. Geological Survey Bulletin 1374, 213 p. Cobb, E.H., 1979, Summary of references to mineral occurrences (other than mineral fuels and construction materials in the Anchorage quadrangle, Alaska: U.S. Geological Survey Open-File Report 79-1095, 184 p. Jasper, M.W., 1965, Geochemical investigations of selected areas in south-central Alaska, 1964: Alaska Division of Mines and Minerals Geochemical Report 4, 31 p. 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. Martin G.C., and Mertie, J.B., 1914, Mineral resources of the upper Matanuska and Nelchina valleys, Alaska: U.S. Geological Survey Bulletin 592-H, p. 273-299.

Mineral List

Gold
Platinum


2 entries listed. 2 valid minerals.

The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
This page is currently not sponsored. To sponsor this page click here.


Mineral and/or Locality  
Search Google  
Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: July 22, 2014 19:05:18 Page generated: June 21, 2011 20:46:04
Mineral and Locality Search
Mineral:
and/or Locality:
Options
Fade toolbar when not in focusFix toolbar to bottom of page
Hide Social Media Links
Slideshow frame delay seconds