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Original Sixteen-To-One

Producer in Sierra county in California, United States with commodities Gold, Silver, Copper, Lead, Zinc
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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. Ore body information
  11. Economic information about the deposit and operations
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10086501
MRDS ID X025319
Record type Site
Current site name Original Sixteen-To-One
Alternate or previous names Sixteen-To-One Twenty-One, Tightner, Eclipse, Ophir
Related records 10189533

Geographic coordinates

Geographic coordinates: -120.84825, 39.46378 (WGS84)
Relative position S EDGE OF ALLEGHANY

Site location context

Political divisions (FIPS codes)

Sierra(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Alleghany(quadrangle 1:24,000 scale)

Truckee(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
Mount Diablo 019N;018N 010E;010E 34;03,04 California

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Secondary
Lead Secondary
Zinc Critical Secondary

Comments on the commodity information

  • NUMEROUS SML SHOOTS OF HIGH GRADE ORE WHICH MAY YIELD $200,000 - $1,000,000

Materials information

Materials Type of material
Gold Ore
Quartz Gangue
Sericite Gangue
Talc Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Economic information

Ore body information

  • Strike N 30 W
    Dip 27 E
    Thickness 15.24M

Comments on the geologic information

  • 5 - 15 AVE THICK VEIN IN HORNBLENDE, GRAPHITE SCHIST & AMPHIBOLITE SCHIST OF REVERSE FAULT W MOVEMENT 300 - 900 FT. VEIN STRIKES N 30 W CHANGING TO N - S TO THE N. DIPS 20 - 60 E, MAINLY 25 - 30 E. 3 LENTICULAR AREAS, WHERE QTZ IS SEVERAL TIMES AVE, OCCUR IN REGIONS OF FLAT DIP WHERE STRIKE CHANGES, & CONTAIN HORSES OF COUNTRY ROCK. BANDED VUGGY QTZ ENDS CONTAINS COARSE QTZ XTLS BELOW 1000 FT LEVEL. N & S OF PRODUCTIVE PART OF VEIN, IT SPLITS INTO SMALL STRINGERS. THERE ARE SEVERAL BRANCHES W ONLY A LITTLE QTZ AT SOME INTERSECTIONS. DRAG IN META CONGL INDICATES REVERSE MOVEMENT. OPHIR VEIN JOINS 16 - 1 S OF 16 - 1 SHAFT.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1911

Comments on the production information

  • AG, PB, CU, ZN PRODUCED AS BYPRODUCT. VEIN PROSPECTING BEGAN 1896 , BUT WAS DISCOVERED EARLIER DURING PLACER OPERATIONS. MOST PRODUCTIVE MINE IN SIERRA CO.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 128.63M

Comments on the workings information

  • 2 PRINCIPAL INCLINED SHAFTS W LEVELS DOWN DIP EACH 100 FT IN UPPER WORKINGS & EACH 200 FT IN LOWER WORKINGS

Comments on development

  • ECON.COM: THE MINE HAS PRODUCES MORE THAN 31.1 METRIC TONS (1 MILLION TROY OUNCES) FROM ORE WITH AN AVERAGE CONTENT EXCEEDING 31 GRAMS (1 TROY OUNCE) OF GOLD PER METRIC TON. LUCAS,1992

Reference information

Bibliographic references

  • Deposit

    MCCULLOCH, W. C., OESTERLING, W. A., SPURCK, W. H., & TISCHLER, M. S., 1964 , MINERALS FOR INDUSTRY, IN CALIF.: SO. PACIFIC COMPANY, VOL. 2 , P. 36 .

  • Deposit

    AVERILL, C. V., 1942 , MINES AND MINERAL RESOURCES OF SIERRA CO.: CDM CALIF. JOUR. MINES AND GEOL., VOL. 38 , NO. 1 , P. 44 - 47 .

  • Deposit

    FERGUSON, H. G., & GANNETT, R. W., 1932 , GOLD QTZ VEINS OF THE ALLEGHANY DISTRICT, CALIF.; USGS PROF. PAPER 172 , P. 106 - 109 .

  • Deposit

    LOGAN, C. A., 1929 , SIERRA CO.: CDMM 25TH REPORT STATE MINERALOGIST, APRIL, P. 171 , 172 .

  • Deposit

    LUCAS, JOHN M., 1992, USBM MINERALS TODAY, OCT. 1992, P. 30.

  • Production

    MCCULLOCH ETAL, 1964 ; FERGUSON & GANNET, 1932

General comments

Subject category Comment text
Deposit IN 1992 THE OPERATORS BEGAN USING METAL DETECTORS AS AN UNDERGROUND GOLD LOCATION TOOL. AFTER 6 MONTHS OF EXPERIMENTATION, MORE THAN $1 MILLION WORTH OF GOLD HAD BEEN DETECTED AND RECOVERED. IN A 12 DAY PERIOD MINERS REPORTEDLY HAD DETECTED AND RECOVERED 12 KILOGRAMS OF GOLD. PREVIOUS TO THIS METHOD THE MINE WAS HAVING FINANCIAL DIFFICULTY. ; INFO.SRC : 1 PUB LIT
Deposit VEIN, ORE SHOOTS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Hayden, F. (Albers, J.) U.S. Geological Survey
Updater 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.

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.