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  3. Mineral Resource Data System (MRDS)

Ruby

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. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10077640
MRDS ID W025394
Record type Site
Current site name Ruby
Related records 10286771

Geographic coordinates

Geographic coordinates: -120.84631, 39.51849 (WGS84)
Elevation 1433

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
019N 010E 15 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -120.84631, 39.51849
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Brush Creek Mining And Development Co., Inc.

Comments on development

  • ECON.COM: CLOSED IN 1942 BY THE WAR PRODUCTION BOARD, REOPENED 1992. PRIOR TO 1942 CLOSURES THE MINE PRODUCED MORE THAN 5,600 KILOGRAMS ( 180,000 TROY OUNCES) OF GOLD.

Reference information

Bibliographic references

  • Deposit

    REPORT OF STATE MINERALOGIST XXV P 208

  • Deposit

    OTHER LOCATIONS SEC 10,11,14 T19N R10E

  • Deposit

    LUCAS, J.M. AND ROBERTO, M. 1992, USBM MINERALS TODAY, OCT. 1992, P.29.

General comments

Subject category Comment text
Deposit THE COARSE GOLD NUGGETS RECOVERED AT THE MINE ARE AMONG THE FINEST SPECIMENS IN THE WORLD, COMPANY OFFICIALS SAY. (LUCAS & ROBERTO, 1992)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1993 Moyer, Lorre A. (Marcus, S.M.) U.S. Geological Survey

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 (1025 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.