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Stonehouse Deposit

Prospect in Humboldt county in Nevada, United States with commodities Gold, Silver, Arsenic, Antimony, Mercury, Thallium, Molybdenum
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Ownership information
  18. Reserves and resources
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10055097
MRDS ID RE00042
Record type Site
Current site name Stonehouse Deposit
Alternate or previous names Nw-1, East Zone, Southeast Area

Geographic coordinates

Geographic coordinates: -117.21067, 40.82712 (WGS84)
Elevation 1387
Relative position 1 MILE SOUTH OF STONEHOUSE EXIT OFF INTERSTATE 80. 34 MILES SE OF WINNEMUCCA, NV. 4 MILES NW OF DUNPHY, NV.

Site location context

Political divisions (FIPS codes)

Humboldt(county)

Nevada(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Valmy(quadrangle 1:24,000 scale)

Winnemucca(quadrangle 1:100,000 scale)

Winnemucca(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Humboldt(hydrologic unit)

Humboldt(hydrologic accounting unit)

Black Rock Desert-Humboldt(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management NV)

Bureau of Land Management NV BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Nevada Humboldt

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 34N 42E 13,14 Nevada

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Arsenic Critical Tertiary
Antimony Critical Tertiary
Mercury Tertiary
Thallium Tertiary
Molybdenum Tertiary

Comments on the commodity information

  • THE BEST AU GRADES OCCUR IN ROCK SHOWING LIMONITE AND JAROSITE FOUND TOGETHER WITH ABUNDANT ORANGE AND RED OXIDES. LATE HEMATITE THAT STAINS FRACTURES DOES NOT HOST AU.

Materials information

Materials Type of material
Barite Gangue
Chalcopyrite Gangue
Hematite Gangue
Limonite Gangue
Marcasite Gangue
Molybdenite Gangue
Pyrite Gangue
Stibnite Gangue

Alteration

  • (Local) Argillization, Silicification.

Analytical data

Result THE GEOCHEMICAL SIGNATURE AT STONEHOUSE CONSISTS OF WEAK, LOCAL BASE METAL AND MO ANOMALIES, AND LOCAL AG ANOMALIES. THE AVERAGE ICP TRACE ELEMENT FIGURES FOR 10 SAMPLES COLLECTED IN EVERY OTHER INTERVAL IN HOLE #NM-669 ARE: AU, 4.3 PPM
Result AG, 1.2 PPM
Result AS, 2860 PPM
Result SB, 53 PPM
Result HG, 4.1 PPM
Result TL, 6.2 PPM.

Mineral occurrence model information

Model code 172
USGS model code 26a
Deposit model name Carbonate-hosted Au-Ag
Mark3 model number 15

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock
    Rock unit name Altered Quartz Porphyry Dikes
    Rock description Altered Quartz Porphyry Dikes
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Eocene
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Valmy Formation;Havallah Sequence;Antler Sequence
    Rock description Valmy Formation;Havallah Sequence;Antler Sequence
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Meta-Basalt
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Siltstone
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Conglomerate
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert

Nearby scientific data

(1) -117.21067, 40.82712
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Golconda Thrust; Iron Point Thrust
Type of structure Local
Structure description The West Side Of Lone Tree Hill Is Dominated By A N-Striking Normal Fault. This Fault Is Intersected By Ne-Striking Topographic Linears (Representing Faults?) Which Extend From The Deposit To Buffalo Mtn. And Which Parallel The Midas Trench.

Ore body information

  • Strike N15-20W
    Dip 70-75W
    Thickness 60.96M
    Length 2413.95M
    Width 21.34M

Controls for ore emplacement

  • Ore Is Structurally Controlled. Any Of A Wide Variety Of Rock Types (Siliciclastic And Carbonate Sediments, Metabasalt, Etc.) Can Be Mineralized Within Structures. Nw-1 Is The Most Economically Important Structure At Stonehouse. The "O" And "D" Faults Are Also Important Ore-Controlling Structures.

Comments on the geologic information

  • THE STONEHOUSE DEPOSIT IS A STRUCTURALLY CONTROLLED, EPITHERMAL AU DEPOSIT WITH COMPLEX GEOMETRY AND VERY ERRATIC GRADE DISTRIBUTION. EARLY CONTACT METAMORPHISM, POSSIBLY RELATED TO A FAILED PORPHYRY COPPER SYSTEM, IS THOUGHT TO HAVE DECREASED POROSITY IN THE SEDIMENTARY ROCKS. A LATER, CARLIN-TYPE HYDROTHERMAL SYSTEM WAS THEN SUPERIMPOSED. DEPOSITION OF DISSEMINATED AU MINERALIZATION WAS PREVENTED BY THE CONTACT METAMORPHISM-INDUCED REDUCTION IN POROSITY.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1988
Discoverer Cordex

Mining district

District name Battle Mountain

Ownership information

  • Type Operator
    Owner Lone Tree Mining, Inc.
  • Type Owner
    Owner Santa Fe Pacific Minerals

Reserves and resources

  • Type In-situ
    Estimate year 1991
    Commodity Subtype Grade units Group Importance Year
    Gold Au 2.287 g/mt Gold Major 1991

Comments on the reserve resource information

  • 1991 FIGURES AS OF APRIL, 1991 USING A CUTOFF GRADE OF 0.02 OPT AU TO A DEPTH OF 680 FT. FROM SURFACE.

Comments on the workings information

  • TWO TEST PITS WERE STRIPPED IN 1989 AND/OR 1990.

Comments on development

  • REPORTEDLY, TWO BROTHERS NAMED PLANK EXPLORED LONE TREE HILL IN THE 1930'S, OPENING THE TUNNELS AND SHAFTS WHICH ARE STILL VISIBLE. IT IS THOUGHT THAT THIS WAS COPPER EXPLORATION, BUT NO PRODUCTION IS RECORDED. DURING THE 1960'S, SEVERAL CORE HOLES WERE DRILLED TO TEST A PORPHYRY COPPER GEOPHYSICAL TARGET. IN THE 1970'S, THE APPLEGATH GROUP DRILLED TWO HOLES. GROUPS IN THE MID-1980'S DID ADDITIONAL WORK IN SEARCH FOR GOLD. CORDEX HAD DRILLED A FEW OUTLYING HOLES IN SECTIONS 13 AND 14 BY 1987. IN JULY, 1988, HOLE #NM-592 IN SECTION 14 INTERSECTED OXIDIZED GOLD MINERALIZATION AVERAGING 0.034 OPT FROM 25 FT. TO 45 FT. HOLE # NM-669, AN OFFSET OF NM-592 200 FT. TO THE NW, INTERSECTED 95 FT. GRADING 0.119 OPT AU STARTING AT A DEPTH OF 605 FT.; THE RIG RAN OUT OF STEEL AT A DEPTH OF 700 FT. IN SULFIDE MINERALIZATION GRADING 0.286 OPT AU. THE HOLE WAS LATER REENTERED WITH A CORE RIG AND THE NEXT 21 FT. (700-721 FT.) AVERAGED NEARLY 0.500 OPT AU. HOLE #NM-669 WAS THE FIRST HOLE TO INTERSECT
  • THE MAIN ORE-HOSTING STRUCTURE (CALLED NW-1 IN MINE USAGE) AT STONEHOUSE. HOLE NM#677 INTERSECTED THE NW-1 ORE ZONE AT THE BEDROCK SURFACE AT A DRILL DEPT OF 45 FT.; THE FIRST 20 FT. OF BEDROCK AVERAGED 0.457 OPT AU FOLLOWED BY AN ADDITIONAL 15 FT. OF 0.051 OPT AU AND THEN 35 FT. OF LEACH GRADE, ALL OF WHICH WERE IN THE OXIDE ZONE. A FLOAT ROCK CHIP GEOCHEMICAL SURVEY COMPLETED IN JULY, 1989 NEARLY PERFECTLY OUTLINED THE AU-BEARING AREA KNOWN FROM 21 DRILL HOLES COMPLETED TO THAT TIME. THIS GEOCHEMICAL ANOMALY WAS DEFINED BY AS VALUES >75 PPM AND BY DETECTABLE AU VALUES UP TO 2 PPM. THIS ANOMALY WAS BOUNDED ON THE NORTH BY THE PROPERTY BOUNDARY WITH SANTA FE PACIFIC (THE SECTION LINE BETWEEN SECTIONS 11 AND 14). TRENCHING COMPLETED IN THE FALL OF 1989 INDICATED DEPTHS OF ALLUVIAL COVER OF < 1 FT. OVER MINERALIZED BEDROCK IN PLACES. TYPICALLY, TRENCHES WERE DUG ALONG DRILL HOLE CROSS SECTIONS. TWO TEST PITS WERE ALSO STRIPPED TO PROVIDE MATERIAL FOR METALLURGICAL TESTING AND TO
  • EXPERIMENT WITH VARIOUS MINING EQUIPMENT. IN APRIL, 1992, IT WAS STATED THAT THE STONEHOUSE DEPOSIT HAD BEEN ACQUIRED BY SANTA FE PACIFIC MINERALS. STONEHOUSE WILL LIKELY BE DEVELOPED AS THE SOUTHERN EXTENSION OF THE LONE TREE MINE.

Reference information

Bibliographic references

  • Deposit

    MCGIBBON, D.H., 1992, THE STONEHOUSE GOLD DEPOSIT, HUMBOLDT COUNTY, NEVADA, ABSTRACT IN APRIL, 1992 GEOLOGICAL SOCIETY OF NEVADA NEWSLETTER.

  • Deposit

    MCGIBBON, D.H., 1992, THE STONEHOUSE GOLD DEPOSIT, HUMBOLDT COUNTY, NEVADA, ORAL PRESENTATION AT APRIL 17, 1992 MEETING OF THE GEOLOGICAL SOCIETY OF NEVADA.

  • Deposit

    NBMG, 1994, MI-1993

  • Reserve-Resource

    MCGIBBON, D.H., 1992, THE STONEHOUSE GOLD DEPOSIT, HUMBOLDT COUNTY, NEVADA, ORAL PRESENTATION AT APRIL 17, 1992 MEETING OF THE GEOLOGICAL SOCIETY OF NEVADA. NBMG MI-1993

General comments

Subject category Comment text
Deposit STRIKE AND DIP ARE FOR THE NW-1 STRUCTURE, THE MOST ECONOMICALLY IMPORTANT STRUCTURE AT STONEHOUSE. GOLD MINERALIZATION OCCURS IN THREE MAIN AREAS. THE MAIN STRUCTURE (NW-1) HAS BEEN DEFINED OVER ALMOST 1.5 MILES, STRIKES NNW, AND DIPS 70-75 WEST. EAST ZONE MINERALIZATION LIES EAST OF NW-1, IN ITS FOOTWALL. THE EAST ZONE IS A SERIES OF HORSETAIL STRUCTURES THAT STRIKE APPROX. N-S AND HAVE STEEP WEST TO ALMOST VERTICAL DIPS. THE SOUTHEAST ZONE IS OFFSET APPROX. 1000 FT. FROM THE NW-1 STRUCTURE. THE SOUTHEAST AREA IS STILL NOT WELL UNDERSTOOD, BUT AU VALUES HAVE BEEN ENCOUNTERED OVER A BROAD AREA, WITH SOME SUGGESTION OF A RELATIVELY FLAT BODY. MINERALIZATION IN THE SOUTHEAST ZONE TENDS TO BE ERRATIC, LOW GRADE, AND REFRACTORY.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1992 Phinisey, J. D. (Marcus, S.) U.S. Geological Survey
Updater 01-SEP-1994 Li, Zhiping (Moyer, Lorre A.) 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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