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

Roma

Past Producer in Mariposa county in California, United States with commodity Gold
Map
XML
JSON
KML
C
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. Economic information about the deposit and operations
  13. Ownership information
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10031098
MRDS ID M009687
Record type Site
Current site name Roma
Alternate or previous names Piedra De Goza
Related records 10114922

Geographic coordinates

Geographic coordinates: -119.95376, 37.58076 (WGS84)
Elevation 823
Relative position 1.5 MI S & SLIGHTLY E. BRICEBURG CLOSE TO YOSEMITE ALL-YEAR HIWAY

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Feliciana Mountain(quadrangle 1:24,000 scale)

Yosemite Valley(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Merced(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 018E 14 California

Comments on the location information

  • UTM EST, SE 1/4 (?)

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Alteration

  • (Local) Greenstone Rendered Slaty To Schistose By Intense Shearing

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -119.95376, 37.58076
ListMap

Economic information

Ore body information

  • Strike E
    Dip 60 - 70 S
    Thickness 1.52M
    Depth to top 0M

Comments on the geologic information

  • MAIN VEIN IS A CONTINUATION OF SYSTEM WHICH CROSSES ADJACENT KING SOLOMON MINE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1855

Ownership information

  • Type Operator
    Owner Frank And Nellie Harris

Comments on the production information

  • NOTHING RECORDED OF EARLY PRODUCTION, BUT SUBSTANTIAL PRODUCTION IS PROBABLE. MINE WAS OPERATED FROM TIME TO TIME UNTIL 1901.

Workings at the site

  • Type of workings Underground
    Length 304.8M
    Overall depth 182.88M

Comments on the workings information

  • ADIT.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 164 - 165 , 301

  • Deposit

    AUBURY, L. E., 1904 , REGISTER OF MINES AND MINERALS, MARIPOSA COUNTY CALIFORNIA: CALIFORNIA STATE MINING BUREAU, P. 13

General comments

Subject category Comment text
Deposit VEIN AVG 2 - 2.5 FT THICK
Deposit PATENTED 25 ACRES ; INFO.SRC : 1 PUB LIT
Deposit Discovery Year: 1850'S-1860'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Bowman, J. And Albers, J. U.S. Geological Survey

Beyond USGS

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

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.