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Rambler

Prospect in Alaska, United States with commodities Gold, Silver, Lead, Zinc
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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. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10002253
MRDS ID A013156
Record type Site
Current site name Rambler
Alternate or previous names Challenger
Related records 10258177

Geographic coordinates

Geographic coordinates: -136.88851, 58.84389 (WGS84)
Relative position The Rambler is about 1.25 miles south of Mt. Parker on the east side of Lamplugh Glacier at an elevation of about 1500 feet. The location is accurate within 100 feet. (The Mt. Parker of Rossman, 1959, B 1058-B, pl. 4, is about 1.6 miles north of the Mt. Parker of the Mount Fairweather D-3 quadrangle used to describe this location). The occurrence is location number 23 of Cobb (1972).

Site location context

Political divisions (FIPS codes)

Hoonah-Angoon(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Fairweather D-3(quadrangle 1:63,360 scale)

Mount Fairweather NE(quadrangle 1:100,000 scale)

Mount Fairweather(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Glacier Bay(hydrologic unit)

Northern Southeast Alaska(hydrologic accounting unit)

Southeast Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Glacier Bay National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Zinc Critical Secondary

Comments on the commodity information

  • Ore Material = Gold (native)

Materials information

Materials Type of material
Arsenopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Gold Ore
Barite Gangue
Calcite Gangue
Feldspar Gangue
Quartz Gangue

Alteration

  • (Local) Narrow alteration envelopes reported by MacKevitt and others (1971).

Mineral occurrence model information

Model code 273
USGS model code 36a
Deposit model name Low-sulfide Au-quartz vein
Mark3 model number 27

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -136.88851, 58.84389
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = The Rambler vein area crops out on the east side of Lamplugh Glacier in an area underlain principally by granodiorite of Cretaceous age that encloses subordinate inclusions of metasedimentary rock. The granodiorite is cut by mafic dikes of northeast strike (MacKevett and others, 1971, p. 64). A major fault of north-northwest strike underlies and determines the linear course of Lamplugh Glacier (Brew and others, 1978); motion on that fault could have been important in opening the Rambler and nearby veins of northeast to east strike. As mapped by Rossman (1959, B 1058-B, pl. 4), the Rambler is in a vein swarm. The Rambler vein, of nearly east strike, is as much as 3-feet thick; most other veins strike about N. 60 E., pinch and swell characteristically and are traceable for 200-feet or less. The Rambler vein is pyritic; other veins, exposed or as float, contain arsenopyrite, galena, sphalerite, and sparse free gold. Of seven samples collected in the area and reported in MacKevett and others (1971, table 11), all except one contained at least 0.015 oz/ton gold. Maximum assay was 0.263 ounce per ton gold. Sampling by the Bureau of Mines (Kimball and others, 1978, p. C231) of short narrow high grade vein segments near Rambler contained as much as 6.45 ounce per ton gold in a narrow (about 0.35 foot) vein segment. Quartz, calcite, barite and feldspars are reported as vein minerals (MacKevett and others, 1971, p. 64).
  • Age = Late Cretaceous or younger.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Juneau

Comments on the reserve resource information

  • Reserves = No reserves; several veins in swarm may have potential.

Comments on the workings information

  • Workings / Exploration = The initial discovery was made by Joe Ibach before 1940. Four claims were located in 1936.

Reference information

Bibliographic references

  • Deposit

    Rossman, Darwin, 1959, Geology and ore deposits in the Reid Inlet area, Glacier Bay, Alaska: U.S. Geological Survey Bulletin 1058-B, p. 33-58.

  • Deposit

    MacKevett, E.M., Jr., Brew, D.A., Hawley, C.C., Huff, L.C., and Smith, J.G., 1971, Mineral resources of Glacier Bay National Monument, Alaska: U.S. Geological Survey Professional Paper 632, 90 p., 12 plates, scale 1:250,000.

  • Deposit

    Brew, D.A., Johnson, B.R., Grybeck, D., Griscom, A., Barnes, D.F., Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources of the Glacier Bay National Monument Wilderness Study Area, Alaska: U.S. Geological Survey Open-File Report 78-494, 670 p.

  • Deposit

    Kimball, A.L., Still, J.C., and Rataj, J.L., 1978, Mineral resources, in Brew, D. A., and others, Mineral resources of the Glacier Bay National Monument wilderness study area, Alaska: U.S. Geological Survey Open-File Report 78-494, p. C1-C375.

  • Deposit

    Cobb, E.H., 1972, Metallic mineral resources map of the Mount Fairweather quadrangle, AK: U.S. Geological Survey Miscellaneous Field Study Map MF-436, 1 sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Rossman, 1959 (B 1058-B); MacKevett and others, 1971; Kimball and others, 1978

General comments

Subject category Comment text
Deposit Model Name = Low-sulfide gold-quartz vein (Cox and Singer, 1986; model 36a).
Deposit Other Comments = the area is often snow covered. It has potential for further discovery. The Rambler vein area is in Glacier Bay National Park and Preserve.

Reporter information

Type Date Name Affiliation Comment
Reporter 08-APR-99 Hawley, C.C. Hawley Resource Group

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.