Toano Group

The Toano Group is a copper and iron mine located in Elko county, Nevada at an elevation of 6,401 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: Toano Group  

State:  Nevada

County:  Elko

Elevation: 6,401 Feet (1,951 Meters)

Commodity: Copper, Iron

Lat, Long: 41.79778, -114.55250

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 Toano Group

Toano Group MRDS details

Site Name

Primary: Toano Group
Secondary: O'Connell Mine


Commodity

Primary: Copper
Primary: Iron


Location

State: Nevada
County: Elko
District: Contact (48)


Land Status

Not available


Holdings

Not available


Workings

Not available


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1912
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Snake River Plain


Mineral Deposit Model

Not available


Orebody

Form: TABULAR


Structure

Type: L
Description: Granodiorite Stock With Assoc. Faults, Fractures


Alterations

Alteration Type: L
Alteration Text: Oxidation


Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic


Analytical Data

Not available


Materials

Not available


Comments

Comment (Deposit): 4 PARALLEL VEINS, APPARENTLY REPLACEMENTS OF DIKES WHICH ARE COMPLETELY ALTERED AND MINERALIZED.

Comment (Deposit): THE TOANO GROUP IS ALSO CALLED THE O'CONNELL MINE. THE DEPOSITS ARE ON THE SEDIMENTARY SIDE OF THE CONTACT AND OCCUR CHIEFLY IN A PARALLEL E-W RIDGE OF THE LIMESTONE. THEY ARE CONTAINED IN 4 VEINS OR LODES, WHICH STRIKE NW, ARE APPROXIMATELY PARALLEL, AND DIP STEEPLY TO NE AND INTO THE MOUNTAIN. THESE VEINS SEEM TO REPRESENT REPLACEMENTS OF PORPHYRY DIKES WHICH ARE MORE OR LESS COMPLETE ALTERED, REPLACED, AND MINERALIZED IN THE VICINITY OF THE WORKINGS. THEIR TRUE PORPHYRY-DIKE CHARACTER IS SHOWN IN THE LIMESTONE ON THE NW, AND THE GRANODIORITE TO THE SE. CLAIM NO.2 IS A LODE 75 FEET WIDE, COMPOSED PRINCIPALLY OF 40% SILICEOUS IRON ORE, AND CONTAINING AT THE MIDDLE A 20-INCH VEIN CONSISTING PRINCIPALLY OF COPPER OXIDE AND CARBONATES AVERAGING ABOUT 7% COPPER. (SCHRADER, 1912, P150). LOCATION ESTIMATED BASED ON SCHRADERS' DESCRIPTION. ; INFO.SRC : 1 PUB LIT


References

Reference (Deposit): SCHRADER, F.C. (1935) THE CONTACT MINING DISTRICT, NEVADA: USGS BUL. 847-A.

Reference (Deposit): HOPE, R.A. & COATS, R.R. (1976) PRELIM. GEOLOGIC MAP OF ELKO CO., NEV: USGS OFR76-779.

Reference (Deposit): SCHRADER, F.C. (1912) A RECONN. OF THE JARBIDGE, CONTACT, AND ELK MT. MINING DISTRICTS, ELKO CO., NEVADA: USGS BUL. 497.


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.