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  3. Mineral Resource Data System (MRDS)

Longbrake

Occurrence in Douglas county in Oregon, United States with commodity Mercury
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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. Alteration
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10095489
MRDS ID M055874
Record type Site
Current site name Longbrake
Related records 10225415

Geographic coordinates

Geographic coordinates: -123.19449, 43.38592 (WGS84)

Site location context

Political divisions (FIPS codes)

Douglas(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nonpareil(quadrangle 1:24,000 scale)

Roseburg(quadrangle 1:100,000 scale)

Roseburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Umpqua(hydrologic unit)

Southern Oregon Coastal(hydrologic accounting unit)

Oregon-Washington Coastal(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Oregon Douglas

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 025S 004W 20 Oregon

Commodities

Commodity Importance
Mercury Primary

Alteration

  • (Local) Sandstone Is Weakly Altered And Iron Stained

Analytical data

Result ASSAYS SHOW TRACE HG IN SANDSTONE

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Umpqua
    Rock description Umpqua
    Stratigraphic age (youngest) Eocene
    Stratigraphic age (youngest) Eocene

Economic information

Geologic structures

Type of structure Local
Structure description Faults

Ore body information

  • Strike N 25 E
    Dip 35 SE

Comments on the geologic information

  • ONLY TRACES OF CINNABAR WERE FOUND. CHALCEDONY AND LIMONITE VEINLETS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Bonanza Area

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Douglas Co.

Workings at the site

  • Type of workings Unknown
    Length 109.73M

Reference information

Bibliographic references

  • Deposit

    BROOKS, H. C., 1963, QUICKSILVER IN OREGON: OREGON DEPT. OF GEOLOGY AND MINERAL INDUSTRIES, BULL. 55, 223 P.

  • Deposit

    RAMP, L., 1972, GEOLOGY AND MINERAL RESOURCES OF DOUGLAS COUNTY, OREGON: ODGMI BULL. 75, P. 53

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1976 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-MAR-1981 Ferns, Mark L. (Brooks, Howard C.) U.S. Geological Survey
Updater 01-AUG-1993 Gray, Jerry J. Oregon Department of Geology and Mineral Industries

Beyond USGS

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

Maps centered on this site