Babybasket

Occurrence in Alaska, United States with commodities Copper, Zinc, Silver, Lead

Sections on this page

Identification information
Geographic coordinates
Site location context
Geographic areas
Commodities
Materials information
Mineral occurrence model information
Nearby scientific data
Economic information about the deposit and operations
Mining district
Links to other databases
Bibliographic references
General comments
Reporter information

Geologic information

Identification information

Deposit ID	10307804
Record type	Site
Current site name	Babybasket

Geographic coordinates

Geographic coordinates:	-153.82291, 63.0995 (WGS84)
Relative position	The Babybasket occurrence is situated just south of the highest point in the Babybasket Hills (1,455 ft summit) at an elevation of 1,250 feet (381 m) in Section 36, T. 27 S., R. 26 E., of the Kateel River Meridian. Location is imprecise and judged to within a two mile (3.2 km) radius.

Site location context

Political divisions (FIPS codes)

Yukon-Koyukuk(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Medfra A-2(quadrangle 1:63,360 scale)

Denali SW(quadrangle 1:100,000 scale)

Medfra(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork Kuskokwim River(hydrologic unit)

Upper Kuskokwim River(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Geographic areas

Country	State
United States	Alaska

Commodities

Commodity	Importance
Copper	Primary
Zinc Critical	Primary
Silver	Secondary
Lead	Secondary

Materials information

Materials	Type of material
Chalcopyrite	Ore
Pyrite	Ore
Sphalerite	Ore
Calcite	Gangue
Quartz	Gangue

Mineral occurrence model information

Model code	72
USGS model code	19a
Deposit model name	Polymetallic replacement
Mark3 model number	47

Nearby scientific data

(1)	-153.82291, 63.0995	ListMap

Economic information

Comments on the geologic information

Geologic Description = The Babybasket prospect consists of several zones of disseminated chalcopyrite, pyrite and rare sphalerite in calc-silicate skarn and carbonate replacement zones. The mineralized zones are adjacent to gabbro-diorite dikes and sills that intrude Cambro-Ordovician silty limestone and shale of the Lyman Hills Formation, the lower-most part of the Dillinger subterrane as defined by Bundtzen and others (1997). No size or orientations of mineralized zones are known. The occurrences were detected as a result of anomalous values found in stream sediment and pan concentrate samples collected by the U.S. Geological Survey (King and others, 1980; 1983). Age is probably either Paleozoic or Triassic, based on isotopic age data collected from equivalent gabbro-diorite sills in the McGrath quadrangle (Bundtzen and others, 1997).
Age = the Babybasket occurrence is probably either Paleozoic or Triassic, based on isotopic age data collected from equivalent gabbro-diorite sills in the McGrath quadrangle (Bundtzen and others, 1997).

Economic information about the deposit and operations

Development status	Occurrence

Comments on exploration

Status = Inactive

Mining district

District name	McGrath

Comments on the workings information

Workings / Exploration = The Babybasket occurrence was found as the result of sampling by the U.S. Geological Survey (King and others, 1980; 1983).

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Alaska Resource Data File	ARDF	MD079

Bibliographic references

Deposit

King, H.D., Tripp, R.B., O'Leary, R.M., and Cooley, E.F., 1983, Distribution and abundance of copper, lead, and zinc in nonmagnetic and moderately magnetic heavy-mineral- concentrate, minus-80-mesh stream-sediment, and ash of aquatic-bryophyte samples, Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811-I, 6 sheets, scale 1:250,000.
Deposit

Bundtzen, T.K., Laird, G.M., Harris, E.E., and Clautice, K.H., 1994, Geologic map of the Lime Hills C-5 and C-6 quadrangles, Alaska: Alaska Division of Geological and Geophysical Surveys Public Data File Report 94-40, 30 p., 1 sheet, scale 1:63,360.

Comments on the references

Primary Reference = King and others, 1980

General comments

Subject category	Comment text
Deposit	Model Name = Polymetallic Replacement Deposit (?)(Cox and Singer, 1986; model no. 19a)
Deposit	Other Comments = Similar deposits are described in the McGrath and Lime Hills quadrangles (Bundtzen and others, 1994; 1997).

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	03-JUN-98	Bundtzen, T.K.	Pacific Rim Geological Consulting

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.