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Maryland Mine

Past Producer in Lemhi county in Idaho, United States with commodities Lead, Silver, Manganese, Zinc, Nickel
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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. Materials information
  8. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Mineral rights holdings
  16. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10071936
MRDS ID W015714
MAS/MILS ID 0160590260
Record type Site
Current site name Maryland Mine

Geographic coordinates

Geographic coordinates: -113.444, 44.78569 (WGS84)
Elevation 2118
Relative position 9.75 MI ESE OF LEMHI

Site location context

Political divisions (FIPS codes)

Lemhi(county)

Idaho(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Goat Mountain(quadrangle 1:24,000 scale)

Leadore(quadrangle 1:100,000 scale)

Dubois(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lemhi(hydrologic unit)

Salmon(hydrologic accounting unit)

Lower Snake(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Salmon-Challis 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 Idaho Lemhi

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 017N 025E 23 C N2SE Idaho

Commodities

Commodity Importance
Lead Primary
Silver Primary
Manganese Critical Secondary
Zinc Critical Secondary
Nickel Critical Tertiary

Materials information

Materials Type of material
Anglesite Ore
Galena Ore
Psilomelane Ore
Pyrolusite Ore
Smithsonite Ore
Sphalerite Ore
Calcite Gangue
Hematite Gangue
Limonite Gangue
Pyrite Gangue
Quartz Gangue
Siderite Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result MN 9.9%, FE 27.2% INSOL. 31.2%, CAO 1.1%, AL2O3 0.08%, PB .32%, ZN 2.0% FROM ORE SAMPLE

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -113.444, 44.78569
ListMap

Economic information

Ore body information

  • Length 274.32M
    Width 6.1M

Controls for ore emplacement

  • Fault
  • Contact

Comments on the geologic information

  • Ore Control Above Refers To Pb-Ag Deposits; Mn Deposit Occurs In Fractures And Open Spaces In Limestone
  • Original concentration process entry:
    Hypogene, Supergene
  • Original alteration entry:
    Local - Oxidation
  • Original ore control entry:
    Fault Controlled Contact Between Quartzite Footwall And Limestone Hanging Wall.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1902
Discoverer Albert C. Amonson
Year of first production 1906

Mining district

District name Junction Mining District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest
Area name Salmon National Forest

Ownership information

  • Type Owner
    Owner Amonson, A. C. And Edwards, E. S.

Comments on the production information

  • A Small Amount Of Mn Ore Was Produced In 1918.

Workings at the site

  • Type of workings Underground
    Length 914.4M

Comments on development

  • 6 Unpatented Claims

Reference information

Bibliographic references

  • Deposit

    Thune, H. W., 1941, Mineralogy Of The Ore Deposits Of The Western Portion Of The Little Eightmile Dist: Moscow, Idaho, Univ. Of Idaho, M. S. Thesis, 37 P.

  • Production

    Item 8, Thune, H. W., 1941, Univ. Of Idaho, M. S. Thesis; Item 9, Wicken, O. M., 1941, Univ. Of Idaho, M. S. Thesis

  • Deposit

    Wicken, O. M., 1941, A Metallurgical Investigation Of Low-Grade Manganese Ore: Moscow, Idaho, Univ. Of Idaho, M. S. Thesis, 26 P.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1976 Benjamin, David A.; Miller, Pat U.S. Geological Survey
Reporter 13-MAR-1995 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

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

External references

Maps centered on this site