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Mazuma Hills Mine

Past Producer in Pershing county in Nevada, United States with commodities Gold, Silver, Copper, Lead, Antimony
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Alteration
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10042432
MRDS ID M060225
Record type Site
Current site name Mazuma Hills Mine
Alternate or previous names Mazuma Hills Group, NBMG Sample Site 2817, Reagan Mine Adjoining, Lookout Claims, Outlook Claims
Related records 10247544

Geographic coordinates

Geographic coordinates: -118.78627, 40.4685 (WGS84)
Elevation 1646

Site location context

Political divisions (FIPS codes)

Pershing(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Seven Troughs(quadrangle 1:24,000 scale)

Lovelock(quadrangle 1:100,000 scale)

Lovelock(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Granite Springs Valley(hydrologic unit)

Truckee(hydrologic accounting unit)

Central Lahontan(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Nevada Pershing

Comments on the location information

  • ON NORTH SIDE OF SEVEN TROUGHS CANYON ENTRANCE. CANYON IS ON EASTERN FLANK OF SEVEN TROUGHS RANGE. UTM IS TO SAMPLE SITE 2817 AT ONE OF LARGE DUMPS. . INFO FROM LAND.ST :(1972)

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Copper Tertiary
Lead Tertiary
Antimony Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Electrum Ore
Calcite Gangue
Chlorite Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Two Periods Of Alteration; An Early Pervasive Propylitic Event And A Second Argillic Alteration.

Analytical data

Result SAMPLE 2817 FROM MAZUMA MINE DUMPS, SULFIDE-RICH RHYOLITE BRECCIA, CONTAINS 7 % FE, 2 % MG, 15 % CA, 0.7 % TI, 1000 PPM MN, 1.5 PPM AG, 0.15 PPM AU (BY AA ANALYSIS), 10 PPM B, 3000 PPM BA, 1.5 PPM BE, 20 PPM CO, 15 PPM CU, 70 PPM LA, 20 PPM MO, 7 PPM NI, 100 PPM PB, 20 PPM SC, 300 PPM SR, 150 PPM V, 50 PPM Y, 200 PPM ZR.

Mineral occurrence model information

Model code 150
USGS model code 25c
Deposit model name Epithermal vein, Comstock
Mark3 model number 16

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -118.78627, 40.4685
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1905
Discoverer William Stauts
Year of first production 1907

Mining district

District name Seven Troughs District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Owner
    Owner Mazuma Hills Mining Co.
    First year 1930
  • Type Owner
    Owner Nevada State Gold Mines Co.
    First year 1930

Comments on the production information

  • LATER PRODUCTION WAS PROBABLY LUMPED WITH SEVEN TROUGHS COALITION MINING CO.

Comments on the workings information

  • ADIT, SHAFT, WINZES

Comments on development

  • DISCOVERED IN 1905, BUT NOT MUCH DEVELOPED UNTIL 1907 WHEN MAZUMA HILLS MINE OPENED. MAZUMA HILLS MINING CO. WAS ONE OF THE 3 MAIN MINING CO. ACTIVE DURING THE MAIN PRODUCTION PERIOD FROM 1908 TO 1916. MAZUMA HILLS MILL WAS BUILT IN 1908 NEAR THE MOUTH OF THE CANYON BELOW THE MINES, AND ALTHOUGH IT SURVIVED THE 1912 FLOOD THAT WIPED OUT THE TOWN OF MAZUMA, BUT BURNED DOWN 13 DAYS LATER, ON 13 JUL 1912. IN 1917, THE LOWER LEVELS OF THE MAZUMA HILLS MINE WERE FLOODED (AS WERE THOSE OF THE SEVEN TROUGHS COALITION) AND COULD NOT BE DRAINED, LEADING TO CLOSURE OF THE MINE. FRIEDMAN STARTED A `DEEP TUNNEL' TO DRAIN THE MINES IN 1919 WITH SLOW PROGRESS UNTIL 1926 WHEN, AFTER SEVERAL REORGANIZATIONS AND CLAIM ACQUISITIONS, WORK BEGAN IN EARNEST AND BY MARCH 1928, IT WAS 5495 FEET LONG AND A NEW POWER PLANT HAD BEEN INSTALLED. BY MARCH 1929, TUNNEL WAS 7200 FEET LONG AND EXPECTED TO CUT THE COALITION VEIN IN 200 FEET. BY 1930, MAZUMA HILLS MINING CO. WAS PART OF THE SEVEN TROUGHS GOLD
  • MINING CO. WHICH ALSO COMPRISED SEVEN TROUGHS COALITION, CLEGHORN, SUGNAL PEAK, GOLD CUP, SEVEN TROUGHS GOLD MINING CO. AS WELL AS OTHERS, COVERING 2400 ACRES. THE TUNNEL WAS 10,000 FEET LONG BY NOVEMBER 1929, WITH SOME SIDE DRIFTING AT THE 5100-FOOT STATION AND ELSEWHERE. IT EVENTUALLY DID CONNECT WITH THE TYLER SHAFT AND DEEP PORTIONS OF THE COALITION MINE BUT AT A MUCH SHALLOWER DEPTH THAN ORIGINALLY INTENDED, TOO HIGH TO DRAIN THE DEEP WORKINGS. AS A MATTER OF FACT, WITH THE ELEVATION OF THE DEEP TUNNEL PORTAL SO HIGH, IT WAS IMPOSSIBLE TO DRAIN THE LOWER WORKINGS ANYWAY - IT WAS A PROMOTIONAL SCHEME. BY 1930, NEVADA STATE GOLD MINES CO. HAD GAINED CONTROL OF MOST OF THE MINES. IN 1934, IT WAS THE LARGEST GOLD PRODUCER IN PERSHING COUNTY; IT LEASED ITS MILL AND CYANIDE PLANTS AND MOST OF THE ORE PRODUCED CAME FROM THE OLD MINE DUMPS.

Reference information

Bibliographic references

  • Deposit

    QUADE, JACK, 6 SEP 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.

  • Deposit

    NBMG STAFF, 1985, A MINERAL INVENTORY OF THE PARADISE-DENIO AND SONOMA-GERLACH RESOURCE AREAS, WINNEMUCCA DISTRICT, NEVADA: NBMG OFR 85-3.

  • Deposit

    BRUCE, W. R., 1980, GEOLOGY AND MINERAL DEPOSITS OF THE SEVEN TROUGHS MINING DISTRICT; PERSHING COUNTY, NEVADA.; SOCIETY OF ECONOMIC GEOLOGISTS FIELD TRIP GUIDE, UNPUB.

  • Deposit

    JOHNSON, M. G., 1977, GEOLOGY AND MINERAL DEPOSITS OF PERSHING COUNTY, NEVADA: NBMG BULL. 89, P. 87-89.

  • Deposit

    SHAMBERGER, H. A., 1972, THE STORY OF SEVEN TROUGHS, PERSHING COUNTY, NEVADA - HISTORIC MINING CAMPS OF NEVADA; NO. 3: USGS AND NEVADA DEPARTMENT OF CONSERVATION AND NATURAL RESOURCES, NEVADA HISTORICAL PRESS, CARSON CITY.

  • Deposit

    RANSOME, F. L., 1909, NOTES ON SOME MINING DISTRICTS IN HUMBOLDT COUNTY, NEVADA: USGS BULL 414, P. 19-25.

  • Deposit

    VANDERBURG, W. O., 1936, RECONNAISSANCE OF MINING DISTRICTS IN PERSHING COUNTY, NEVADA: USBM IC 6902, P. 37-39.

  • Deposit

    LINCOLN, F. C., 1923, MINING DISTRICTS AND MINERAL RESOURCES OF NEVADA: NEVADA NEWSLETTER PUBLISHING CO., RENO.

  • Deposit

    COUCH, B. F., AND CARPENTER, J. A., 1943, NEVADA'S MAL AND MINERAL PRODUCTION (1859-1940, INCLUSIVE): NBMG BULL. 38, NO. 4, P. 130-131.

  • Deposit

    STAGER, H.K., AND TINGLEY, J.V., 1988, TUNGSTEN DEPOSITS IN NEVADA: NBMG BUL 105, P. 192.

  • Deposit

    SILBERMAN, M. L., JOHNSON, M. G., KOSKI, R. A., AND ROBERTS, R. J., 1973, K-AR AGES OF MINERAL DEPOSITS AT WONDER, SEVEN TROUGHS, IMLAY, TEN MILE AND ADELAIDE MINING DISTRICTS IN CENTRAL NEVADA: ISOCHRON/WEST, NO. 8, P. 31-35.

  • Production

    COUCH AND CARPENTER (1943).

General comments

Subject category Comment text
Deposit VEINS ARE SOFT CRUSHED MATERIAL WITH MOVEMENT SINCE ORE DEPOSITION. TYPICAL QUARTZ IS FRIABLE OR SUGARY. IN RICH ORE, GOLD WAS VISIBLE AS CLUSTERS OF SMALL IRREGULAR PATCHES OR AS COARSE CRYSTALLINE AGGREGATES. REAGAN MINE IS ON A SPEARATE VEIN FROM MAZUMA HILLS, BUT BOTH WERE ADJACENT AND HELD BY SAME COMPANY DURING PRODUCTIVE YEARS. VEINS ARE PARALLEL AND ABOUT 40 FEET APART. BOTH MAZUMA HILLS AND REAGAN VEINS FOLLOW BASALTIC DIKES VARYING IN WIDTH FROM A FRACTION OF AN INCH TO GREATER THAN 6 FEET. BEST ORE WAS ON THE FOOTWALL (EAST) SIDE OF THE DIKE IN BOTH THE TUFFACEOUS COUNTRY ROCK AND IN THE BASALT. NETWORK OF INTERCONNECTING QUARTZ VEINS AND VEINLETS ALONG FISSURES AND PARALLELLING DIKES IN THE RHYOLITE. FAULTS AND STRINGERS CROSS THE MAIN N-S VEIN TREND.
Deposit ORIGINAL M060225 HAD NO REFERENCES. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV
Deposit THIS RECORD HAS BEEN MERGED WITH MRDS RECORD M242812, WHICH HAS BEEN DELETED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1973 Johnson, Maureen G. U.S. Geological Survey
Updater 01-JUN-1986 La Pointe, D.D. (Tingley, J.V.) Nevada Bureau of Mines and Geology
Updater 01-APR-1993 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey
Updater 01-JUL-1993 Humphries, S. E. (Marcus, S.) U.S. Geological Survey
Updater 01-SEP-1994 Li, Zhiping (Peters, S.) 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 Nevada resources

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