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Mcmaster and Alma Claims

Occurrence in Skagit county in Washington, United States with commodities Chromium, Iron
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Geologic information

Identification information

Deposit ID 10131958
MRDS ID M700384
MAS/MILS ID 0530570014
Record type Site
Current site name Mcmaster and Alma Claims
Related records 10047997

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -121.88734, 48.62621 (WGS84)
Elevation 600
Location accuracy 100(meters)
(click for info)

Geographic areas

Country State County
United States Washington Skagit

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 036 N 007 E 10 NWSWNE Washington

Commodities

Commodity Importance
Chromium Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chromite Unknown
Enstatite Unknown
Magnetite Unknown
Olivine Unknown
Serpentine Unknown

Nearby scientific data

Ore Body (1) -121.88734, 48.62621
ListMap

Ore body information

  • Thickness 9999M
    Depth to top 99999M
    Width 999999M
    Length 999999M
    Area 17HA
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 LENTICULAR
    Type of Orebody #2 OTHER
    Shape of Orebody #2 OTHER
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. NONE
    Type of Wallrock Alter. #1 UNKNOWN
    Minimum Depth to Top 99999
    Avg. Thick. Unconsol. Mat. 9999
    Min. Thick. Unconsol. Mat. 9999
    Total Surface Area (HA) 17
    Date of Last Modification 820827

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1938

Mining district

District name Sisters

Mineral rights holdings

Type of mineral rights Located Claim
Type of mineral rights Unknown

Land status

Ownership category National Forest

Ownership information

  • Type Unknown
    Owner Wild, Alwyn H. (Industrial Mining, Inc.)
    Home office Washington
    Year 1975

Comments on the production information

  • PRODUCTION IS ONGOING.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0530570014
USGS Mineral Resources Data System MRDS M700384 MAS references MRDS

Bibliographic references

  • Deposit

    GAUDETTE, H.E., GEOCHEMISTRY OF THE TWIN SISTERS

  • Deposit

    ULTRAMAFIC BODY, WASHINGTON, UNPUB. THESIS, UNIV. OF

  • Deposit

    ILLINOIS, 1953.

  • Deposit

    WASH, DIV. OF MINES AND GEOL. BULL. 37, 1956.

  • Deposit

    CHROMITE DEPOSITS OF TWIN SISTERS MTS., WASHINGTON.

  • Deposit

    USGS STRATEGIC MINERALS INVENTORY MAP, 1943.

  • Deposit

    WASH. DIV. OF MINES AND GEOL. BULL. 57, 1969.

  • Deposit

    RAGAN, D.M., GEOL. OF TWIN SISTERS DUNITE NORTHERN

  • Deposit

    CASCADES, WASHINGTON, UNPUB THESIS UNIV OF WASH, 1961.

  • Deposit

    SPANSKI, G.T., TWIN SISTERS MTS, WASH, UNIV OF

  • Deposit

    ILLINOIS 1963.

  • Deposit

    CHROMITE DEPOSITS OF THE THREE LAKES AREA, TWIN SISTERS

  • Deposit

    RANGE, WHATCOM AND SKAGIT COUNTIES, WASH., SUNSHINE

  • Deposit

    MINING CO. CONFIDENTIAL REPORT, 1942.

  • Deposit

    WASH. STATE DIV. OF GEOL. AND EARTH RESOURCES, UNPUB

  • Deposit

    DATA.

Reporter information

Type Date Name Affiliation Comment
Reporter 23-JUN-1994 Lucas, J.M. U.S. Bureau of Mines