Frances Prospect

Occurrence in Alaska, United States with commodities Gold, Silver, Copper

Geologic information

Identification information

Deposit ID 10000606
MRDS ID A011213
Record type Site
Current site name Frances Prospect

Geographic coordinates

Geographic coordinates: -150.95983, 63.53706 (WGS84)
Location accuracy 500(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • PLOTTED FROM SKETCH MAP IN USGS BULLETIN 836, P.324 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Tertiary

Comments on the commodity information

  • DATA FROM THIS SITE LUMPED WITH NEARBY SITES SHOWS ZN AND PB SULFIDES; ZN AND PB NOT SPECIFICALLY REPORTED FROM FRANCIS

Materials information

Materials Type of material
Gold Ore
Silver Ore
Pyrite Gangue
Quartz Gangue

Analytical data

Result SAMPLES TAKEN ACROSS VEIN ASSAYED: TRACE TO 0.06 OZ/TON AU, 0.10-1.00 OZ/TON AG
Result ANOTHER SAMPLE ASSAYED AT 35 DOLLARS/TON IN AU AND AG (AU AT 20.67 DOLLARS/OZ, AG AT 1.00 DOLLAR/OZ), IN DAVIS, 1923, (REF 1)
Result ASSAY: 0.02-0.04 OZ/TON AU AND 0.6-0.8 OZ/TON AG REPORTED IN WELLS, 1933, (REF 3)

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Birch Creek
    Rock description Birch Creek
    Stratigraphic age (youngest) Early Cambrian

Nearby scientific data

(1) -150.95983, 63.53706

Geologic structures

Type of structure Regional
Structure description Kantishna Antiform

Ore body information

  • Thickness 1.02M

Comments on the geologic information

  • MINEROLOGY SUGGESTS THAT THIS SITE AND OTHER NEARBY SITES LIE ON THE SAME VEIN SYSTEM, PARTICULARLY GALENA, LITTLE MAUDE, MARTHA Q, POLLY WONDER, SILVER PICK, GOLD DOLLAR, GOLD EAGLE, LITTLE ANNIE

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Kantishna District

Land status

Ownership category National Park

Comments on the reserve resource information

  • HALF-SQUARE RESOURCE ESTIMATE: 468 TONS OF ORE; GRADE: 8.18 OZ/TON AG, 0.20 OZ/TON AU; 2.0% PB AND 0.1% ZN, ADGGS REPORT OF INVESTIGATIONS 83-12, P. 17

Workings at the site

  • Type of workings Surface/Underground
    Overall length 21.34M

Comments on the workings information

  • 70 TO 75 FT TUNNEL DRIVEN ALONG VEIN N 55 E AND OPEN CUTS; OPEN CUTS CAVED IN 1931

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011213

Bibliographic references

  • Deposit

    DAVIS, 1923, THE KANTISHNA REGION, ALASKA, IN STEWART, B.D., ANNUAL REPORT OF THE MINE INSPECTOR TO THE GOVERNOR OF ALASKA, 1922: JUNEAU, ALASKA, P. 124, 125

  • Deposit

    USGS BULLETIN 836, P. 332

  • Deposit

    USGS BULLETIN 849-F, P. 368

  • Deposit

    USGS OPEN FILE 77-169A, P. 44 LOC. 4 (COMBINED DATA)

  • Deposit

    ADGGS OPEN FILE 98, P. 31 LOC. 20 (DATA COMBINED WITH LITTLE MAUDE AND POLLY WONDER)

  • Deposit

    USBM OPEN FILE 24-78, P. 4-26

  • Deposit

    ADGGS REPORT OF INVESTIGATIONS 83-12, P. 17

General comments

Subject category Comment text
Deposit VEIN THINS FROM 40 IN TO STRINGERS IN SCHIST COUNTRY ROCK; MOSTLY WHITE QUARTZ CARRYING FREE GOLD, SILVER AND SCATTERED PYRITE CRYSTALS
Deposit SEE ALSO: LITTLE MAUDE, POLLY WONDER, MARTHA Q ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1984 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey