Mammoth Prospect-Admiralty I.

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

Geologic information

Identification information

Deposit ID 10001343
MRDS ID A012084
Record type Site
Current site name Mammoth Prospect-Admiralty I.
Alternate or previous names USGS

Geographic coordinates

Geographic coordinates: -134.64978, 58.11502 (WGS84)
Location accuracy 2000(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • LOCATION APPROXIMATED FROM USGS 85-717, NO. J075 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Zinc Primary
Lead Secondary
Silver Secondary
Gold Secondary

Materials information

Materials Type of material
Sphalerite Ore
Pyrite Gangue
Quartz Gangue

Analytical data

Result 4.5 FT SAMPLE TAKEN IN 1983 CONTAINED 2% ZN, 0.5% BA, 280 PPM AS
Result AND 8.1 FT SAMPLE CONTAINED 1100 PPM ZN, 320 PPM AS, AND 0.65 PPM AU
Result OLDER SAMPLES AVERAGED ABOUT 1-2% ZN WITH MINOR PB, AG AND AU, ACCORDING TO A WGM INC. UNPUBLISHED REPORT
Result USGS OFR 85-717, P. 88

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist > Calc-Silicate Schist

Nearby scientific data

(1) -134.64978, 58.11502

Geologic structures

Type of structure Local
Structure description Schistosity Of Country Rock: Strike N 25 W, Dip 75 Ne

Comments on the geologic information

  • PYRITIC QUARTZ-MUSCOVITE-CHLORITE SCHIST INTERCALATED WITH MINOR CALC-SILICATE SCHIST.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Admiralty

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Surface/Underground
    Length 50.29M

Comments on the workings information

  • EXPLORED BY 165 FT TUNNEL, SURFACE PITS AND TRENCHES; WORKINGS CAVED

Comments on development

  • ACTIVE IN EARLY 1900'S; NO APPARENT WORK AFTER 1910; 4 PATENTED LODE CLAIMS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A012084

Bibliographic references

  • Deposit

    USGS BULL 259, P. 55-56

  • Deposit

    USGS BULL 287, P. 150

  • Deposit

    USGS BULL 1246, P. 140

  • Deposit

    ADGGS GCB, P. 19

  • Deposit

    USGS OFR 85-717, P. 88

  • Other Database

    BAG-OFR-85-717-075

General comments

Subject category Comment text
Deposit THREE E-W TRENDING ZONES 25-75 FT WIDE IN PYRITIFEROUS BELT OF SCHIST; ZONES CONTAIN QUARTZ-CARBONATE-MARIPOSITE VEINS CARRYING PYRITE, SPHALERITE, GALENA AND FREE GOLD; REPORTED MAGNETIC ANOMALY
Deposit SEE ALSO: PORTAGE PROSPECT ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1985 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-1994 Mosier, Dan U.S. Geological Survey