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Porphyry Hill

Producer in Mariposa 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. Links to other databases
  10. Bibliographic references
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10109239
MRDS ID M009788
Record type Site
Current site name Porphyry Hill
Related records 10115015

Geographic coordinates

Geographic coordinates: -119.52319, 37.6416 (WGS84)
Relative position CLOSE TO AGUA FRIA CREEK, 2 MI. SE OF MOUNT BULLION.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Half Dome(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)

Federal lands

Yosemite National Park(National Park)

National Park NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 05S 18E 20 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -119.52319, 37.6416
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Comments on the production information

  • ACTIVE 1901, 1905, 1907-10, PRODUCING 37.97 TONS OF ORE YIELDING $2164.48, OR AN AVERAGE OF $57.09 PER TON.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS. 1 & 2, JAN.-APRIL, 1957, P. 297

General comments

Subject category Comment text
Deposit WORKINGS COULD NOT BE IDENTIFIED IN 1954-55. FORMER LAS MARIPOSAS GRANT MINE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. 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.