Colorado

Occurrence in Alaska, United States with commodities Gold, Silver

Geologic information

Identification information

Deposit ID 10000315
MRDS ID A010365
Record type Site
Current site name Colorado
Related records 10185783

Geographic coordinates

Geographic coordinates: -149.55871, 60.65203 (WGS84)
Location accuracy 500(meters)
(click for info)

Geographic areas

Country State
United States Alaska

Comments on the location information

  • DEPOSIT NUMBER IS THE MAP LOCATION NUMBER FROM MF-880A. 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

Materials information

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

Analytical data

Result 2 FIVE FOOT CHIP SAMPLES, EACH ACROSS 5 FEET GAVE 0.05 AND 0.01 OZ/TON AU AND 0.2 OZ TON AG TWICE

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Rock unit name Valdez Group
    Rock description Valdez Group

Nearby scientific data

(1) -149.55871, 60.65203

Geologic structures

Type of structure Local
Structure description Slate Cleavage Parallels On Dike

Ore body information

  • Thickness 1.83M

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Hope District

Land status

Ownership category National Forest

Comments on the workings information

  • OPEN CUTS AND A SHORT TUNNEL

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010365

Bibliographic references

  • Deposit

    USGS BULLETIN 849-I, P. 516

  • Deposit

    USGS MISCELLANEOUS FIELD STUDIES 880-A, LOCATION 45

  • Deposit

    USGS OPEN FILE 80-621, P. 57

General comments

Subject category Comment text
Deposit FRACTURED FELSIC DIKE IS RECEMENTED BY QUARTZ STRINGERS, WHICH NOW COMPRISE 20% OF VOLUME OF DIKE. DIKE IS 5-6 FT WIDE. SOME SULFIDES IN DIKE AS WELL AS IN STRINGERS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1984 Hirschmann, M. M. (Elliott, R. L.) U.S. Geological Survey