The Nevada Humboldt Group is a gold and silver mine located in Pershing county, Nevada.
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
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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.
Nevada Humboldt Group MRDS details
Site Name
Primary: Nevada Humboldt Group
Secondary: NBMG Sample Sites 2506
Secondary: 2510
Secondary: 2511
Commodity
Primary: Gold
Primary: Silver
Tertiary: Zinc
Tertiary: Lead
Location
State: Nevada
County: Pershing
District: Imlay District; Humboldt District
Land Status
Land ownership: Private
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
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
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: Low-sulfide Au-quartz vein
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Late Triassic
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Triassic
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Triassic
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic
Analytical Data
Analytical Data: SAMPLE 2506, COMPOSITE GRAB SAMPLE OF SHAFT AND ADIT DUMP MATERIAL (SILICIFIED KOIPATO RHYOLITE WITH STOCKWORK QUA-RTZ VEINLETS AND PYRITE) CONTAINS 20 % FE, 0.3 % MG, 1 % CA, 0-.02 % TI, 100 PPM MN, 15 PPM AG, 200 PPM AS, 0.05 PPM AU (AA A-NALYSIS), 700 PPM B, 100 PPM BA, 5 PPM BE, 50 PPM CU, 10 PPM M-0, 5 PPM NI, 2000 PPM PB, 150 PPM SB, 30 PPM Y, 1000 PPM ZN, 2-00 PPM ZR.
Analytical Data: S-AMPLE 2511 U, CHIP OUTCROP FROM SAME LOCALITY, CONTAINS 1 % FE-, 0.5 % MG, 0.2 % CA, 0.15 % TI, 50 PPM MN, 1.5 PPM AG, 500 PP-M B, 1000 PPM BA, 1.5 PPM BE, 50 PPM CR, 50 PPM CU, 50 PPM MO,- 15 PPM NI, 30 PPM PB, 5 PPM SC, 1500 PPM V, 10 PPM Y, 200 PPM- ZN, 100 PPM ZR
Analytical Data: SAMPLE 2511, DUMP GRAB, PYR-ITIZED, SILICIFIED, QUARTZ VEINS IN RHYOLITE, JASPEROID PRIDA -CONTAINS 0.2% FE, 0.05 % MG, 0.05% CA, 0.015 % TI, 10 PPM MN, -100 PPM AG, 200 PPM B, 70 PPM BA, 1 PPM BE, 200 PPM BI, 10 PPM-CR, 100 PPM CU, 10 PPM MO, 5 PPM NI, 3000 PPM PB, 30 PPM ZR.
Analytical Data: SAMPLE 2510, DUMP GRAB OF KOIPATO RHYOLITE PORPHYRY- WITH SULFIDE-BEARING VEIN MATERIAL CONTAINS 1 % FE, 0.1 % MG,- 0.2 % CA, 0.015 % TI, 50 PPM MN, 150 PPM AG, 100 PPM B, 50 PP-M BA, 1000 PPM BE, 10 PPM CR, 50 PPM CU, 5 PPM NI, 3000 PPM PB- 50 PPM W, 7000 PPM ZN, 50 PPM ZR.
Materials
Ore: Sphalerite
Ore: Galena
Ore: Pyrite
Gangue: Quartz
Gangue: Calcite
Comments
Comment (Workings): THE PROPERTY IS EXPLORED BY 9 SHORT ADITS DRIVEN ON OR TO INTERSECT QUARTZ VEINS. OTHER ADITS AND ONE SHAFT ARE DRIVEN ON SIMILAR QUARTZ VEINS.SOME WORKINGS CAVED IN 1984.
Comment (Geology): VEINS IN THE FLORIDA CANYON AREA ARE UP TO 24 INCHES WIDE AND CONTAIN SOME SULFIDES. BOTH THE SEDIMENTARY ROCKS OF THE STAR PEAK FORMATION AND THE RHYOLITE OF KOLPATO FORMATION ARE CUT BY QUARTZ-CALCITE VEINS CONTAINING FREE GOLD, PYRITE, GALENA & SPHALERITE. QUARTZ ALSO OCCURS AS PODS AND "BLOWOUTS" IN FLORIDA CANYON ON THE NEVADA NO. 2 CLAIM. SOME OF THE QUARTZ VEINS IN THE NEVHUM AND HUMBOLDT CLAIMS CONTAIN NEEDLES OF TOURMALINE. A VEIN SOUTH IN ADIT NO. 1 CONTAINS QUARTZ, CALCITE, AND FLOURITE WITH SPORADIC FREE GOLD; OCCURING NEAR THE CONTACT WITH THE RHYOLITE.
Comment (Location): ACCESSIBLE VIA JEEP TRAIL IN HUMBOLDT CANYON. CLAIMS OCCUR ON BOTH SIDES OF THE CANYON. UTM FOR SAMPLES ARE AS FO-LLOWS: 2506- N4491625, E397975; 2510-N4492850, E398925; 2511-N-4491975; E398000.
Comment (Development): NO EVIDENCE OF VALID CLAIMS IN 1984. OLD PROPERTY DATING TO 186075. JEEP TRAIL PUT IN, 1950'S-1960'S. OLD STONE BU-ILDING.
Comment (Deposit): 18 PATENTED MINING CLAIMS THAT LIE ALONG THE CONTACT BETWEEN THE STAR PEAK AND KOIPATO FORMATIONS. QUARTZ VEINS IN THE LIMESTONE AND SHALE OF THE STAR PEAK FORMATION.,(PRIDA FM). ON SOUTH SIDE OF HUMBOLDT CANYON, A QUARTZ VEIN 3 M WIDE TRENDS N-S, VERTICAL +/- 5 DEGREES WALLROCK -IS SILICIFIED KOIPATO GROUP (ROCHESTER RHYOLITE). QUARTZ VEIN -CONTAINS PYRITE, AS DOES WALLROCK ADJACENT TO VEIN. VEIN IS WI-THIN 50 M OF CONTACT WITH LOWER THIN-BEDDED MEMBER OF PRIDA FM-. AT SAMPLE SITES 2510 AND 2511, THERE ARE QUARTZ VEINS AND ST-RINGERS IN PORPHYRITIC RHYOLITE OF KOIPATO GROUP. RHYOLITE IS -SILIFIED AND PYRITIZED. GLASSY VEIN QUARTZ, SOME PYRITE, MINOR-GALENA. TOURMALINE AND MUSCOVITE ALSO OCCUR IN QUARTZ. POSSIBL-Y SOME SCHEELITE PRESENT. JASPERIOD PRESENT IN PRIDA FM NEAR C-ONTACT WITH KOIPATO. BRECCIATED AND STOCKWORKED DARK GREY TO B-LACK CARBONACEOUS LIMESTONE WITH SOME FE OXIDE STAINING.
Comment (Deposit): THE NEVADA HUMBOLDT GROUP CONSISTS OF 18 PATENTED MINING CLAIMS THAT LIE ALONG THE CONTACT BETWEEN THE STAR PEAK AND KOIPATO FORMATIONS. THE PROPERTY IS EXPLORED BY 9 SHORT ADITS DRIVEN ON OR TO INTERSECT QUARTZ VEINS IN THE LIMESTONE & SHALE OF THE STAR PEAK FM. OTHER ADITS AND ONE SHAFT ARE DRIVEN ON SIMILAR QUARTZ VEINS IN THE RHYOLITE OF KOIPATO FM. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV
References
Reference (Deposit): LAWRENCE, E. F., 1965, NEVADA HUMBOLDT GROUP, PERSHING COUNTY, NEVADA; UNPUBLISHED REPORT.
Reference (Deposit): BONHAM, H. F., JR., 3 AUG 85, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.
Reference (Deposit): NBMG OFR 85-3, 1985
Reference (Deposit): USGS, 1967, MAP GO-666
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.
