| Deposit ID | 10310330 |
|---|---|
| MRDS ID | W700419 |
| Record type | Site |
| Current site name | Toiyabe-Saddle Deposit |
| Alternate or previous names | 401 Pit, Middle Pit, South Pit |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | -116.7357, 40.038 (WGS84) |
| Location accuracy | 100(meters) |
| Relative position | The Toiyabe Property is located in the northern Toiyabe Range, about 78 miles southwest of Elko, Nevada, 12 mi S of Pipeline deposit. |
Political divisions (FIPS codes)
Lander(county)
Nevada(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Wenban Spring(quadrangle 1:24,000 scale)
Crescent Valley(quadrangle 1:100,000 scale)
Winnemucca(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Middle Humboldt(hydrologic unit)
Humboldt(hydrologic accounting unit)
Black Rock Desert-Humboldt(hydrologic subregion)
Great Basin(hydrologic region)
Federal lands
Bureau of Land Management(Bureau of Land Management NV)
Bureau of Land Management NV BLM(Type of land area)
BLM(Federal land areas administered by BLM)
| Country | State | County |
|---|---|---|
| United States | Nevada | Lander |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 025N | 047E | 18 | Nevada |
| Commodity | Importance |
|---|---|
| Gold | Primary |
| Silver | Secondary |
| Materials | Type of material |
|---|---|
| Gold | Ore |
| Model code | 75 |
|---|---|
| USGS model code | 19c |
| Deposit model name | Distal disseminated Ag-Au |
| Mark3 model number | 18 |
| Host or associated | Host | ||
|---|---|---|---|
| Rock type | Sedimentary Rock > Clastic Sedimentary Rock > Siltstone | ||
| Rock type qualifier | calcareous | ||
| Rock unit name | Wenban Limestone | ||
| |||
| Host or associated | Host | ||||
|---|---|---|---|---|---|
| Rock type | Sedimentary Rock > Carbonate | ||||
| Rock unit name | Roberts Mountain Formation | ||||
| |||||
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite | ||
| Rock type qualifier | dikes | ||
| |||
| Host or associated | Associated | ||
|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Latite | ||
| Rock type qualifier | dikes | ||
| |||
| Ore Body (1) | -116.7357, 40.038 |
|---|
| Type of structure | Local |
|---|---|
| Structure description | northwest-trending thrust faulting |
| Type of structure | Regional |
| Structure description | Regional structural analysis and project-scale geologic data indicate that a north-northwest trending range-front fault zone passes through the property. |
| General form | irregular |
|---|
| Operation type | Surface |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | Yes |
| District name | Bullion District |
|---|---|
| District name | Cortez District |
| District name | Jett District |
| Ownership category | BLM Administrative Area |
|---|
| Type | Owner |
|---|---|
| Owner | Cortez Joint Venture |
| Year | 2004 |
| Type | Operator |
|---|---|
| Owner | Cortez Joint Venture |
| Year | 2004 |
| Type | Operator |
|---|---|
| Owner | N. A. Degerstrom, Inc. |
| Type | Operator |
|---|---|
| Owner | Golden Oasis |
| Type | Owner-Operator |
|---|---|
| Owner | Inland Resources Corp. |
| Year | 1996 |
| First year | 1993 |
| Type | Owner-Operator |
|---|---|
| Owner | Inland Gold And Silver Corp. (Ch To Rec 1 Name, |
| ID | 2602020 |
| Year | 1989 |
| Last year | 1993 |
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | W700419 | MRDS dep_id 10084991 merged into this record. |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0320150711 | MRDS dep_id 10295745 merged into this record. |
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0320150655 | MRDS dep_id 10222610 merged into this record. |
| Mine Safety and Health Administration | MSHA | MSHA | 2602020 |
Staff, 1988, Directory of Nevada Mine Operations Active During Calendar Year 1987: Nevada Division of Mine Inspection, 84 p.
Golden Oasis website, 2006: http://www.goldenoasis.ca/s/Toiyabe.asp
NEV. DIV. MINE INSPECTION, 1991, DIRECTORY OF NEVADA MINE OPEERATIONS ACTIVE DURING CALENDAR YEAR 1990, P. 54.
AMERICAN MINES HANDBOOK, 1996, P138.
NEV. BUREAU OF MINES AND GEOL. SPECIAL PUBLICATION 10, 1990, P. 11.
| Subject category | Comment text |
|---|---|
| Deposit | The Toiyabe mine was a small gold mining and heap leaching operation from 1987-1991 owned by Inland Gold & Silver Corporation. The Toiyabe mine has been abandoned and reclaimed; it lies on a claim block adjacent to and south of the Toiyabe Property. The mine processed approximately 2,300,000 tons of rock and produced approximately 89,000 oz of gold from three small pits. The Saddle deposit of the Toiyabe mine is a sediment-hosted, structurally controlled gold deposit primarily hosted by the Roberts Mountain formation but with the Roberts Mountain Thrust as the major control on the gold mineralization. Gold mineralization in the Toiyabe mine area occurs in the lower plate carbonates but also occurs in the upper plate siliceous sediments above the Roberts Mountain thrust fault. Little is known about the gold occurrences within the Toiyabe Property and much of the information in this section is derived from the historical gold occurrences at the Toiyabe mine. At the Toiyabe mine, 60% of the gold is derived from the lower plate Roberts Mountain Formation while 40% of the gold comes from the upper plate package. Gold is dominantly associated with silicification, either as quartz veins, quartz veinlets and/or replacement flooding. There is also an association with elevated arsenic, mercury, antimony and silver geochemistry which aids in the search for these deposits. Gold commonly occurs where narrow fracture systems intersect only certain sheared, permeable and reactive carbonates that result in larger, shear-breccia hosted gold systems. Additionally, significant zones of gold mineralization on the subject property are associated with lesser argillic alterations. Gold in the Toiyabe mine is also associated with Oligocene aged rhyolitic-latitic dikes. In several areas of the mine, gold is found in quartz veins or siliceous flooding of igneous dikes, |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-AUG-1988 | Paidakovich, Matthew E. | U.S. Geological Survey | |
| Reporter | 25-NOV-1996 | Ridenour, James | U.S. Bureau of Mines | |
| Reporter | 12-DEC-1996 | Lowe, Nathan T. | U.S. Bureau of Mines | |
| Reporter | 01-NOV-2006 | LaPointe, D.D. | Nevada Bureau of Mines and Geology | |
| Editor | 01-SEP-2007 | Schruben, Paul G. | U.S. Geological Survey | Converted from S&A FileMaker format to Oracle. Edit checks on rocks, units, and ages with Geolex search, and other fields. |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
| Status | Abandoned since 05/08/1995 |
|---|---|
| MSHA mine ID | 2602020 |
| Mine name (MSHA) | Toiyabe Project-Saddle Gold Deposit |
| Current operator | Gd Resources Inc |
| Current controller (parent) | Nevada Resources & Development Corp |
| Mine type | Surface (Metal / non-metal) |
MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.
Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.