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

Sugar Loaf

Occurrence in Shasta county in California, United States with commodity Copper
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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. Host and associated rocks
  9. Nearby scientific data
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  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 10033888
MRDS ID M020538
Record type Site
Current site name Sugar Loaf

Geographic coordinates

Geographic coordinates: -122.09331, 40.75179 (WGS84)

Site location context

Political divisions (FIPS codes)

Shasta(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Devils Rock(quadrangle 1:24,000 scale)

Redding(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Pit(hydrologic unit)

Upper Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Shasta-Trinity 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 Shasta

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 033N 002W 04 California

Commodities

Commodity Importance
Copper Tertiary

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -122.09331, 40.75179
ListMap

Economic information

Controls for ore emplacement

  • Contact

Comments on the geologic information

  • GEOL.DESC: PROSPECT IS ON CONTACT BETWEEN THE BULLY HILL RHYOLITE AND THE PIT FORMATION

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name East Shasta Copper-Zinc

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 327.66M
    Overall depth 48.77M

Comments on the workings information

  • 2 ADITS: UPPER ADIT 250 FT. IN LENGTH, LOWER ADIT 800 FT. IN LENGTH. 2 FT. OF ORE LOCATED IN LAST 25 TO 30 FT. OF LOWER ADIT.

Reference information

General comments

Subject category Comment text
Deposit SULFIDE MINERALS OCCUR AS A REPLACEMENT OF THE RHYOLITE.
Deposit SHOWINGS INDICATE THIS AREA AS A FAVORABLE PROSPECTING ONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1978 Fraticelli, L. A. (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.