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Merryweather Prospect

Prospect in Ontonagon county in Michigan, United States with commodity Copper
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10310128
MRDS ID LW00128
Record type Site
Current site name Merryweather Prospect

Geographic coordinates

Geographic coordinates: -89.6787, 46.575 (WGS84)
Relative position BERGLAND TOWNSHIP; SW OF MINESOTA MINE

Site location context

Political divisions (FIPS codes)

Ontonagon(county)

Michigan(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Merriweather(quadrangle 1:24,000 scale)

Ontonagon(quadrangle 1:100,000 scale)

Iron River(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ontonagon(hydrologic unit)

Southcentral Lake Superior(hydrologic accounting unit)

Southern Lake Superior(hydrologic subregion)

Great Lakes(hydrologic region)

Federal lands

Ottawa National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Michigan Ontonagon

Public Land Survey System information

Meridian Township Range Section Fraction State
Michigan 48N 43W 10 NW Michigan

Commodities

Commodity Importance
Copper Primary

Mineral occurrence model information

Model code 96
USGS model code Unassigned
Deposit model name Native Cu
Mark3 model number 99

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Portage Lake Volcanics
    Rock description Portage Lake Volcanics
    Stratigraphic age (youngest) Stenian
    Chronological age 1095

Nearby scientific data

(1) -89.6787, 46.575
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Syncline

Ore body information

  • General form IRREGULAR

Comments on the geologic information

  • ALTERNATE BRECCIATED BASALT FLOWS, AMYGDALOIDAL BASALTS AND/OR INTERFLOW CONGLOMERATES - VARIES WITH LOCATION

Economic information about the deposit and operations

Operation type Underground
Development status Prospect
Commodity type Metallic
Significant No
Year of first production 1852

Mining district

District name Keweenaw Copper District

Ownership information

  • Type Owner
    Owner Merryweather Mining Co.
    First year 1854

Comments on the workings information

  • SHAFT AND ADIT MET SHAFT AT 200 FEET DEPTH OR AT 200 FEET LENGTH OF ADIT, DRAINED IN 1899

Reference information

Bibliographic references

  • Deposit

    JOHNSON, A.M. AND GROTH, E.H., 1998, INVENTORY OF UNDERGROUND MINES, ONTONAGON COUNTY, P. 158-159, SITE ID # 660053, MICHIGAN DEPARTMENT OF NATURAL RESOURCES.

General comments

Subject category Comment text
Deposit "GRANT DAYS" INVENTORY REPORT FOUND REFERENCES TO MINE IN ONTONAGON HERALD NEWSPAPER (9/23/1899) & MINING MAGAZINE(11/1854 & 12/1854)

Reporter information

Type Date Name Affiliation Comment
Reporter 06-AUG-2002 Anderson, Arlene (M. Gere) Michigan Department of Natural Resources

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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