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Mallard Bay Occurrence

Occurrence in Alaska, United States with commodity Iron
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Geologic information

Identification information

Deposit ID 10000224
MRDS ID A010261
Record type Site
Current site name Mallard Bay Occurrence
Related records 10161052

Geographic coordinates

Geographic coordinates: -132.01843, 54.77612 (WGS84)
Elevation 198
Location accuracy 250(meters)
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Iron Primary

Materials information

Materials Type of material
Magnetite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Pyroxenite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Pyroxenite

Nearby scientific data

(1) -132.01843, 54.77612
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Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1956
Discovery method Geophysical Anomaly

Mining district

District name Ketchikan District

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Utah Construction Co.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A010261

Bibliographic references

  • Deposit

    USGS BULLETIN 1154, P.61, 100-101.

  • Deposit

    USGS OPEN FILE 78-863, P.15

General comments

Subject category Comment text
Deposit MAGNETITE CONCENTRATION IN ULTRAMAFIC INTRUSIVE REACHES 10% BY USGS STUDY, BUT COMPANY REPORTS MUCH HIGHER.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-83 Hirschmann, M. M. (Elliott, R. L.) U.S. Geological Survey