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  3. Mineral Resource Data System (MRDS)

Bathtub Ridge

Occurrence in Alaska, United States with commodity Manganese
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10003114
MRDS ID A015646
Record type Site
Current site name Bathtub Ridge

Geographic coordinates

Geographic coordinates: -142.3033, 69.0999 (WGS84)
Relative position Accurate to within 915 meters (3,000 ft). Grybeck, 1977, p. 42, Locality 10.

Site location context

Political divisions (FIPS codes)

North Slope(Borough)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Demarcation Point A-3(quadrangle 1:63,360 scale)

Demarcation Point SW(quadrangle 1:100,000 scale)

Demarcation Point C(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Eastern Arctic(hydrologic accounting unit)

Arctic Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Arctic National Wildlife Refuge(National Wildlife Refuge)

National Wildlife Refuge FWS(Type of land area)

FWS(Federal land areas administered by FWS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Manganese Critical Primary

Comments on the commodity information

  • Ore Material = Manganese minerals
  • Ore Material = Manganese minerals

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore
Rhodochrosite Ore

Mineral occurrence model information

Model code 242
USGS model code 34b
Deposit model name Sedimentary Mn

Host and associated rocks

  • Host or associated Host
    Rock type
    Stratigraphic age (youngest) Early Cretaceous

Nearby scientific data

(1) -142.3033, 69.0999
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = About 53 meters (175 ft) of highly manganiferous beds crop out in the middle the of pebble-shale member of the Lower Cretaceous Kongakut Formation which is 158 meters (520 ft) thick at this locality. This manganiferous section is black, with small pellets and thin beds of sedimentary manganese carbonates; exact chemical composition of this interval not known.??The term Kongakut Formation is no longer widely used; the interval described here is currently referred to as the pebble shale unit and is widely recognized in the subsurface of northern Alaska. The pebble shale unit depositionally overlies the Kemik Sandstone of Early Cretaceous age. At Bathtub Ridge the pebble shale unit depositionally underlies siltstone (see Bird and Molenaar, 1987, Figure 5.6 A) whereas north of Bathtub Ridge, the pebble shale unit depositionally underlies shales of Early Cretaceous age, some of which are radioactive and tuffaceous.
  • Age = Age of host rocks is Early Cretaceous
  • Age = Host rock is Early Cretaceous.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Canning

Comments on the workings information

  • Workings / Exploration = Analysis of samples indicated about 5% Mn.

Reference information

Bibliographic references

  • Deposit

    Bird, K.J., and Molenaar, C.M., 1987, Stratigraphy, in Bird, K.J., and Magoon, L.B., eds., Petroleum geology of the northern part of the Arctic Wildlife Refuge, northeastern Alaska: U.S. Geological Survey Bulletin 1778, p. 37-59.

  • Deposit

    Cobb, E.H., Mayfield, C.F., and Brosg?, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.

  • Deposit

    Detterman, R.L., Reiser, H.N., Brosgi, W.P., and Dutro, J.T., Jr., 1975, Post-Carboniferous stratigraphy, northeastern Alaska: U.S. Geological Survey Professional Paper 886, 46 p.

  • Deposit

    Cobb, E.H., Mayfield, C.F., and Brosge, W.P., 1981, Summaries of data on and lists of references to metallic and selected nonmetallic mineral occurrences in eleven quadrangles in northern Alaska (Arctic, Baird Mountains, Chandler Lake, DeLong Mountains, Demarcation Point, Howard Pass, Misheguk Mountain, Mount Michelson, Noatak, Point Lay, and Table Mountain); Supplement to Open-File Report 75-628; Part A, Summaries of data to January 1, 1981: U.S. Geological Survey Open-File Report 81-767-A, 25 p.

Comments on the references

  • Primary Reference = Detterman and others, 1975.

General comments

Subject category Comment text
Deposit Model Name = Sedimentary Mn
Deposit Model Number = 34b Cannon and Force (1986, p. 231)
Deposit Other Comments = USBM OF 63-78, p. 21, Locality 23 was listed as a reference prior to the last ?review of this file. This reference was not verified by Kelley.

Reporter information

Type Date Name Affiliation Comment
Reporter 13-SEP-1996 Powers, M.T. U.S. Geological Survey
Reporter 13-SEP-1996 Huber, D.F. U.S. Geological Survey
Reporter 13-SEP-1996 Kelley, J.S. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.