Stonehouse Deposit

The Stonehouse Deposit is a gold mine located in Humboldt county, Nevada at an elevation of 4,551 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Stonehouse Deposit
Secondary: Nw-1
Secondary: East Zone
Secondary: Southeast Area

Commodity

Primary: Gold
Secondary: Silver
Tertiary: Arsenic
Tertiary: Antimony
Tertiary: Mercury
Tertiary: Thallium
Tertiary: Molybdenum

Location

State: Nevada
County: Humboldt
District: Battle Mountain

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Owner Name: Santa Fe Pacific Minerals

Owner Name: Lone Tree Mining, Inc.

Production

Not available

Deposit

Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Discovery Year: 1988
Years of Production:
Organization:
Significant: N
Deposit Size: M

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains

Mineral Deposit Model

Model Name: Carbonate-hosted Au-Ag

Orebody

Not available

Structure

Type: R
Description: Golconda Thrust; Iron Point Thrust

Type: L
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.

Alterations

Alteration Type: L
Alteration Text: Argillization, Silicification.

Rocks

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene

Name: Mafic Intrusive Rock
Role: Associated
Age Type: Associated Rock
Age Young: Eocene

Analytical Data

Analytical Data: 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
Analytical Data: TL, 6.2 PPM.
Analytical Data: HG, 4.1 PPM
Analytical Data: SB, 53 PPM
Analytical Data: AS, 2860 PPM
Analytical Data: AG, 1.2 PPM

Materials

Gangue: Limonite
Gangue: Chalcopyrite
Gangue: Barite
Gangue: Marcasite
Gangue: Pyrite
Gangue: Hematite
Gangue: Stibnite
Gangue: Molybdenite

Comments

Comment (Development): 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.

Comment (Development): 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

Comment (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

Comment (Reserve-Resource): 1991 FIGURES AS OF APRIL, 1991 USING A CUTOFF GRADE OF 0.02 OPT AU TO A DEPTH OF 680 FT. FROM SURFACE.

Comment (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.

Comment (Workings): TWO TEST PITS WERE STRIPPED IN 1989 AND/OR 1990.

Comment (Geology): 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.

Comment (Commodity): 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.

References

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

Reference (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.

Reference (Deposit): NBMG, 1994, MI-1993

Reference (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

Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.