Jingo Gold
High Grade Historical Production and Consistent Gold Found in Modern Exploration
Summary and Location
| Location | Historic Resources | Status |
|---|---|---|
|
Elmore County, Idaho |
N/A |
Available |
The project features a large fissure vein ranging from 1 to 6 feet wide. Past development includes 600 feet of tunneling from which shipping ore averaged 1.28 oz/ton gold and 6.70 oz/ton silver. Sampling of the dumps has returned values as high as 1.057 oz/ton gold and 11.25 oz/ton silver. Samples from the vein system consistently show significant gold values.
The Jingo Gold project is located in the Pine Grove Mining District, Elmore County, Idaho. It is situated approximately 54 road miles north-northeast of Mountain Home and 21 miles west of Fairfield. There is a road directly to the project..
History
Discovered around 1893 (originally located as the Jumbo and Hercules claims). By 1903, the mines were extensively operated under bond by a Salt Lake company, which completed six hundred feet of development on the large fissure vein. Early reports noted average gold values ranging from $15 to $25 per ton (historical prices) with occasional bodies of high-grade shipping ore.
In 1933, records indicate a shipment of 153 tons of ore yielding 1.28 oz/ton gold and 6.70 oz/ton silver. In the mid-1980s, Sunshine Mining Company and other operators conducted geological mapping and sampling programs. These modern efforts confirmed high-grade values, with rock chip samples assaying up to 0.532 oz/ton gold, and extensive lower grade gold values.
Geology
The project targets a long, discontinuous epithermal bull quartz vein system striking North 60° East with a steep dip of 75° to 90° South. The vein pinches and swells along strike, reaching a maximum width of approximately ten feet in the vicinity of the old workings. The vein appears to be in fault contact with Cretaceous granite on the north and younger dacites on the south.
Mineralization is associated with the quartz fissure filling and altered country rock. The quartz contains disseminated pyrite, limonite, and occasional bunches of galena and sphalerite. Sampling indicates that the silicified granite hanging wall also carries gold values. High-grade samples are often associated with “bug hole” quartz containing spider-web iron staining and sulfides.