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  3. Mineral Resource Data System (MRDS)

Ruby Mine

Past Producer in Sierra county in California, United States with commodity Gold
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Land status
  10. Ownership information
  11. Reserves and resources
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10286771
MRDS ID W025394
MAS/MILS ID 0060910193
Record type Site
Current site name Ruby Mine
Alternate or previous names Mineral Mountain, Ruby
Related records 10077640

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -120.84633, 39.51848 (WGS84)
Elevation 1432
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Sierra(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Downieville(quadrangle 1:24,000 scale)

Portola(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe 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 California Sierra

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 019 N 010 E 15 NW California

Comments on the location information

  • ALSO LOCATED IN SECS. 10, 11, AND 14, T. 19 N., R. 10 E.

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

Main Entrance (1) -120.84633, 39.51848
ListMap

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner Brush Creek Mining And Development Co.
    Interest 100
    Home office California
    Year 1992

Reserves and resources

  • Type In-situ
    Estimate year 1996
    Total resources 2970000mt ore
    Commodity Subtype Grade units Group Importance Year
    Gold Au 6.9 g/mt Gold Major 1996

Reference information

Bibliographic references

  • Reserve-Resource

    RANDOL MINING DIRECTORY 1996/97, P.166.

  • Deposit

    REPORT OF STATE MINERALOGIST XXV P 208

  • Deposit

    THE MINING RECORD, V104 N28, 7-14-93, P.1.

  • Deposit

    THE MINING RECORD, V104 N41, 10-13-93, P.1.

  • Deposit

    CALIF. DIV. MINES AND GEOL. MINEFILE DATABASE, JUNE 1993.

  • Deposit

    THE MINING RECORD, V104 N46, 11-17-93, P.5.

  • Deposit

    MINING JOURNAL, V321 N8254, 12-10-93, P.402.

  • Deposit

    THE MINING RECORD, V105 N17, 4-27-94, P.6.

Reporter information

Type Date Name Affiliation Comment
Reporter 30-SEP-1996 Silva U.S. Bureau of Mines

Beyond USGS

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

Current status (per MSHA)

StatusActive since 09/08/2025
MSHA mine ID0403108
Mine name (MSHA)RUBY MINE
Current operatorRuby Gold Inc
Current controller (parent)Cirrus Holdings LLC
Mine typeUnderground (Metal / non-metal)

Inferred by coordinate + name similarity (1024 m, 1.00 match). Confirm against MSHA if precision matters — non-USGS-curated cross-references may occasionally point at a neighbouring mine.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

External references

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.