Unnamed Occurrence

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

Geologic information

Identification information

Deposit ID 10001258
MRDS ID A011977
Record type Site
Current site name Unnamed Occurrence

Geographic coordinates

Geographic coordinates: -152.7684, 67.40547 (WGS84)
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Geographic areas

Country State
United States Alaska

Comments on the location information

  • ADGGS OFR 133 B, PLATE 1, NO. 224 LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Commodities

Commodity Importance
Copper Primary
Zinc Primary
Silver Secondary
Tin Secondary

Materials information

Materials Type of material
Cassiterite Ore
Malachite Ore

Analytical data

Result SAMPLE 224: 20 PPM AG, 2000 PPM B, 5000 PPM CU, 200 PPM SB, 700 PPM SN, 1500 PPM ZN (340 PPM BY AA), SEMIQUANT. SPEC. DATA
Result SAMPLE 288: 2 PPM AG, 150 PPM SN, 1500 PPM ZN (5.0 PPM BY AA), SEMIQUANT. SPEC. DATA, COMPOSITE SAMPLE OF CASSITERITE (?) BEARING SKARN
Result ADGGS OFR 133 B, TABLE 2

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Ernie Lake Pluton;Ernie Lake Pluton
    Rock description Ernie Lake Pluton;Ernie Lake Pluton

Nearby scientific data

(1) -152.7684, 67.40547

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Koyukuk

Land status

Ownership category State

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A011977

Bibliographic references

  • Deposit

    ADGGS OFR 133B, SAMPLES 224, 288

General comments

Subject category Comment text
Deposit CASSITERITE (?)-BEARING SKARN AND MALACHITE AND AZURITE STAINED SULFIDE-BEARING METAIGNEOUS ROCKS AT OR NEAR CONTACT OF GRANITE [ERNIE LAKE PLUTON] WITH CALCAREOUS ROCKS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1986 Leonard, Kenneth R. (Elliott, R. L.) U.S. Geological Survey
Editor 14-APR-1994 Mosier, Dan U.S. Geological Survey