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
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.
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
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.
