The Giroux Group is a copper mine located in Mineral 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
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.
Giroux Group MRDS details
Site Name
Primary: Giroux Group
Secondary: Calavada?
Secondary: Arizona-Nevada
Commodity
Primary: Copper
Location
State: Nevada
County: Mineral
District: Santa Fe District
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Arizona-Nevada Copper Co.
Years: 1915 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Contact Metamorphic
Operation Type: Unknown
Year First Production: 1916
Discovery Method: Unknown
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
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silicification
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Triassic
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Triassic
Analytical Data
Not available
Materials
Ore: Chrysocolla
Ore: Malachite
Ore: Cuprite
Gangue: Hematite
Comments
Comment (Geology): THE DEPOSIT IS IN PART CAPPED BY LATER FLOWS OF BIOTITE RHYOLITE. THERE IS CONSIDERABLE FAULTING ALONG THE GRANITIC-LIMESTONE CONTACT ZONE.
Comment (Deposit): A 70-FOOT TACTITE ZONE OF DARK SILICEOUS BRECCIATED LODE MATERIAL LIES BETWEEN GRANITIC ROCK ON SOUTH AND ALTERED CRYSTALLINE LIMESTONE ON NORTH. OXIDIZED ORE OCCURS AS DEEP AS THE SHAFT WITH COPPER CARBONATES IN HEAVY LIMONITIC GOSSAN. CHRYSOCOLLA, MALACHITE, AND AZURITE OCCUR AS SMALL VEINLETS AND FILMS BETWEEN THE FRAGMENTS OF BRECCIA. A FEW POCKETS OF CUPRITE CAN BE FOUND, AND HEMATITE IS ABUNDANT.
Comment (Workings): 1,000 FOOT SHAFT AND UNKNOWN AMOUNT OF UNDERGROUND WORKINGS.
Comment (Production): SMALL SHIPMENT IN 1916.
References
Reference (Deposit): ROSS, D. C., 1961, GEOLOGY AND MINERAL DEPOSITS OF MINERAL COUNTY, NEVADA; NBMG BULL. 58
Reference (Deposit): HILL, 1915, SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN NEVADA; USGS BULL. 594
Reference (Deposit): CLARK, 1922, GEOLOGY AND ORE DEPOSITS OF SANTA FE DISTRICT, NEVADA; CALIF. UNIV. DEPT. GEOL. SCI., V. 14, NO. 1
Reference (Production): ROSS, 1961, TABLE 6.6
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.
