The Blum Shaft is a gold and silver mine located in Humboldt county, Nevada at an elevation of 6,631 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
Elevation: 6,631 Feet (2,021 Meters)
Commodity: Gold, Silver
Lat, Long: 41.835, -117.58500
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.
Blum Shaft MRDS details
Site Name
Primary: Blum Shaft
Commodity
Primary: Gold
Primary: Silver
Secondary: Zinc
Secondary: Copper
Secondary: Iron
Secondary: Lead
Tertiary: Antimony
Tertiary: Arsenic
Tertiary: Mercury
Location
State: Nevada
County: Humboldt
District: National 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
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1925
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
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: TABULAR
Structure
Type: L
Description: Small Faults; Slickensides On Surfaces.
Alterations
Alteration Type: L
Alteration Text: Sericite, Kaolin; Silicification; Bleaching
Rocks
Name: Rhyolite
Role: Host
Age Type: Host Rock
Age Young: Pliocene
Analytical Data
Analytical Data: SAMPLE 2642 OF QUARTZ-SULFIDE BRECCIA CONTAINS 10 % FE, 0.02 % MG, 0.05 % TI, 20 PPM MN, 500 PPM AG, 1000 PPM AS, - 0.65 PPM AU (BY AA ANALYSIS), 20 PPM BA, 10 PPM CO, 15 PPM CR-, 300 PPM CU, 50 PPM NI, 1000 PPM PB, 100 PPM SB, 50 PPM V, 30-0 PPM ZN.
Materials
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Stibnite
Ore: Cinnabar
Ore: Tetrahedrite
Ore: Marcasite
Ore: Galena
Gangue: Alunite
Gangue: Clay
Gangue: Quartz
Gangue: Sericite
Unknown: Pyrite
Comments
Comment (Workings): DEEP VERTICAL SHAFT, CAVING AT COLLAR; PITS, TRENCHES; ADITS TO NE.
Comment (Geology): VEIN CONSISTS OF CLAY GOUGE WITH QUARTZ STRINGERS 8-10" WIDE 3. THE SHEAR ZONE MAY PROJECT TO BLEACHED AREA ON MCCONNELL PEAK TO THE NORTH, AND TO BIRTHDAY MINE AREA TO SOUTH.
Comment (Deposit): VERTICAL SHAFT 260 FT. DEEP IN 1911. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT; 3 FIELD OBSERV
Comment (Deposit): SILICIFIED BRECCIA OUTCROP ON N EDGE OF OLD SHAFT, EXPLORED BY SEVERAL PITS AND TRENCHES TO SW AND BY ADITS TO NE.- BRECCIA APPEARS TO BE ALONG A N10 E SHEAR ZONE CUTTING PUNKY,- BANDED RHYOLITE TUFF. THE ROCKS ARE BLEACHED TO TAN AND DULL -OFF-WHITE COLOR AND ARE KAOLINIZED AND LACED WITH CLEAR LAVEND-AR-TINTED QUARTZ VEINLETS, SOME UP TO 1.5 INCHES THICK, VUGGY,- ORIENTED PARALLEL TO THE SHEAR ZONE. SOME SERICITE CLOTS IN V-EIN, ALSO, POSSIBLY, ALUNITE. SOME BRECCIA FRAGMENTS SHOW SLIC-KENSIDES ON SURFACES. BRECCIA MOSTLY CLEAR TO WHITE QUARTZ CEM-ENTED BY QUARTZ. CEMENTING QUARTZ CONTAINS UP TO 50-60 % PYRIT-E AS SPOTS AND CUBES; PYRITE APPEARS TO BE FLOATING IN QUARTZ,- SOME SPHALERITE SEEN, ALSO.
Comment (Deposit): Discovery Year: EARLY 1900'S
Comment (Location): IN SADDLE BETWEEN ROUND HILL AND AUTO HILL ; INFO FROM LAND.ST :(1972)
References
Reference (Deposit): LINDGREN, W., 1915, GEOLOGY AND MINERAL DEPOSITS OF THE NATIONAL MINING DISTRICT, NEV: USGS BULL 601
Reference (Deposit): WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT COUNTY, NEVADA: NEV. BUR MINES BULL. 59
Reference (Deposit): LAWRENCE, E. F., 1963, ANTIMONY DEPOSITS OF NEVADA; NEV. BUREAU OF MINES BULL. 61
Reference (Deposit): TINGLEY, J. V., 29 SEP 84, NBMG FIELD EXAMINATION AND SAMPLE ANALYSIS.
Reference (Deposit): NBMG STAFF, 1985, NBMG OFR 85-3.
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.
