Giroux Group

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

Name: Giroux Group  

State:  Nevada

County:  Mineral

Elevation:

Commodity: Copper

Lat, Long: 38.5875, -118.08944

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 Giroux Group

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

Gold Districts of Nevada

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.