1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Mary Lou Claim

Past Producer in Siskiyou county in California, United States with commodities Chromium, Iron
Map
XML
JSON
KML
C

Geologic information

Identification information

Deposit ID 10117669
MAS/MILS ID 0060931156
Record type Site
Current site name Mary Lou Claim
Alternate or previous names Octopus Claim, Chromite

Geographic coordinates

Point of reference Trench
Geographic coordinates: -123.04753, 41.71173 (WGS84)
Elevation 1122
Location accuracy 10(meters)
(click for info)

Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 045 N 010 W 33 SWNWNW California

Commodities

Commodity Importance
Chromium Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chromite Unknown
Olivine Unknown
Pyroxene Unknown
Serpentine Unknown

Nearby scientific data

Trench (1) -123.04753, 41.71173
ListMap

Ore body information

  • Depth to top 0M
    Width 3M
    Length 4M
    Area 1HA
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 IRREGULAR
    Shape of Orebody #2 TABULAR
    Shape of Orebody #3 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. SLIGHT
    Type of Wallrock Alter. #1 CARBONITIZATION
    Type of Wallrock Alter. #2 SILICIFICATION
    Strike And Dip N55W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1
    Date of Last Modification 820825

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1918

Mining district

District name Mc Guffy Creek

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Folden, Luis
    Home office California
    Year 1976
  • Type Owner
    Owner Margaret Folden
    Home office California
    Year 1976

Workings at the site

  • Type of workings Surface
    Area 1HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Primary Material Cover HARD ROCKS
    Percentage 100
    Hardness of Ore HARD ROCKS
    Avg. Bench Height (meters) 10
    Max. Pit Slope (degrees) 60

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0060931156

Bibliographic references

  • Deposit

    USG.S.BULL 948-B STRATEGIC MINERAL INVESTIGATION PP.55-62,19

  • Deposit

    S. USGS BULL 922-J,CHROMITE DEPOSITS IN THE SEIAD QUAD. CAL

  • Deposit

    1940 RYNEARSON

  • Deposit

    CDMG BULL 134,GEOL INVEST OF CHROMITE IN CAC PP.93,WELLS,195

General comments

Subject category Comment text
Deposit GRADE OF CONCENTRATES AVERAGED 49.86 PERCENT CR2O3,14.43 PER ,WITH A 2.36 TO 1 CR/FE RATIO. RESERVES PROBABLY LOW(80 LONG TONS) OR NONEXISTANT. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-BANDED O 1.00,CR2O3 55.54,FEO 12.44,TOTAL FE 15.44,AL203 13.23,MGO 12 FE 3.17.ORBICULAR ORE=S102 8.10,CR2O3 43.85,FEO 18.04,TOTAL 8,AL203 9.45,MGO 15.75,CR/FE 1.88

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Stinson U.S. Bureau of Mines