Jumbo Mine

The Jumbo Mine is a gold and silver mine located in Humboldt county, Nevada at an elevation of 5,961 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

Name: Jumbo Mine  

State:  Nevada

County:  Humboldt

Elevation: 5,961 Feet (1,817 Meters)

Primary Mineral: Gold, Silver

Lat, Long: 41.30028, -117.99917

Map: View on Google Maps

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.


Satelite image of the Jumbo Mine

Jumbo Mine MRDS details

Site Name

Primary: Jumbo Mine
Secondary: Jumbo Blue Aagle, and Big Tom Claims, Austin's Mine
Secondary: NBMG Sample Site 2413


Commodity

Primary: Gold
Primary: Silver
Tertiary: Copper
Tertiary: Lead


Location

State: Nevada
County: Humboldt
District: Awakening District; Slumbering Hills District ; Amos District


Land Status

Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.


Holdings

Not available


Workings

Not available


Ownership

Owner Name: Austin, Greg
Home Office: Reno, Nv
Years: 1984 -


Production

Not available


Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: Stockwork
Operation Type: Unknown
Year First Production: 1935
Discovery Year: 1935
Discovery Method: Ore-Mineral In Place
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: Epithermal vein, Comstock


Orebody

Form: IRREGULAR


Structure

Type: R
Description: Mod.Regional Deformation Of Metasediments. Fold Axes Trend N-S

Type: L
Description: General Brecciation


Alterations

Alteration Type: L
Alteration Text: Strong Oxidation: Iron Oxide After Iron Carbonate


Rocks

Not available


Analytical Data

Analytical Data: AND 6.2 AND 17.6 OZ/TON AG, RESPECTIVELY. SAMPLE 2413 CONTAINS 15 % FE, 1 % MG, 0.07 % CA, 1 % TI, 500 PPM MN, 5 PPM AG, 200 PPM B, 1000 PPM BA, 3 PPM BE, -50 PPM CO, 100 PPM CR, 150 PPM CU, 50 PPM LA, 70 PPM NI, 30 PP-M PB, 20 PPM SC, 100 PPM SR, 200 PPM V, 70 PPM Y, 200 PPM ZN, -200 PPM ZR. AA ANALYSIS ALSO SHOWED 24 PPM AU.
Analytical Data: IN 1935, 2 SAMPLES ASSAYED AT 8.66 AND 26.43 OZ PER TON AU


Materials

Gangue: Quartz
Gangue: Iron


Comments

Comment (Commodity): FREE GOLD ASSOCIATED WITH ADULARIA. VERY LITTLE QUARTZ, IRON STAIN.

Comment (Production): BIGGEST PRODUCER IN THE DISTRICT; MOSTLY PRE-1938

Comment (Development): SEVERAL TUNNELS, STOPES, CROSSCUTS

Comment (Workings): NUMEROUS UNDERGROUND WORKINGS; CURRENTLY (1984) SEVERAL OPEN CUTS IN AREA OF UNDERGROUND WORKINGS. OPEN PIT MINING- OF OLD WORKINGS ONGOING. APPARENT HEAP LEACH OPERATION ON MIN-ED MATERIAL, PAD BEING BUILT IN VALLEY WEST OF MINE-2 PADS.

Comment (Geology): GOLD-SILVER ALLOY OCCURS AS STRINGERS IN SHALE. VEIN FILLINGS ARE MORE ADULARIA THAN QUARTZ.

Comment (Deposit): MOST OF THE PRODUCTION FROM THE DISTRICT HAS COME FROM THIS MINE. IT IS MARKEDLYDIFFERENT FROM OTHER DEPOSITS IN THE AREA IN THAT ADULARIA, RATHER THAN QUARTZ, IS THE DOMINANT VEIN-FILLING MATERIAL. LOW RELIEF & LACK OF OUTCROPS HINDERED DISCOVEREY OF THIS MINE UNTIL LATE IN THE HISTORY OF THE DISTRICT(1935).DEVELOPMENT CONSISTS OF SEVERAL TUNNELS, STOPES, CROSSCUTS. DISTRICT PRODUCTION WAS 279,441 TONS OG GOLD-SILVER ORE THRU 1963. ORIGINAL JUMBO CLAIMS WERE LOCATED IN FEB, 1935 BY CLYDE TAYLOR AND J.C. STAGG, BY PANNING OF THE GULCHES TO THE LODE. A SMALL MILL WAS FIRST SET UP 4 MILES FROM THE MILL IN A PRIL, 1935, AND A FEW YEARSLATER A 25 TPD MILL WAS SET UP 3 MILES FRO THE MINE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV


References

Reference (Deposit): VANDERBURG, W.O., 1938 U.S. BREAU OF MINES INFORMATION CIRCULAR, HUMBOLDT CO., NV.

Reference (Deposit): CALKINS, F.C., 1938, GOLD DEPOSITS OF SLUMBERING HILLS, NEVADA, U. OF NEV. BULL.VOL 32, NO.3

Reference (Deposit): WILLDEN, R, 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT COUNTY NEV; NEV. BUR.MINES BULL 59.

Reference (Deposit): YORK, BERNARD, 1937, UNPUB. REPORT, NBMG DISTRICT FILE 123.

Reference (Deposit): FULTON, J.A., 1935-1937; THE AUSTINS' GOLD MINE IN THE SLUMBERING HILLS; WESTERNMINING NEWS-ARTICLE ON FILE AT NEV. BUREAU OF MINES & GEOL.

Reference (Deposit): JONES, R. B., 1984, FIELD EXAMINATION, 8-14-84, AND SAMPLE ANALYSIS.

Reference (Deposit): USGS I.C. 6995, P. 16

Reference (Deposit): LINCOLN, F. C., 1923, MINING DISTRICTS AND MINERAL RESOURCES OF NEVADA; NEVADA NEWSLETTER PUBLISHING CO, RENO, NV.

Reference (Production): WILLDEN, R., 1964