Kaiyah Prospect, Kaiyuh Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Kaiyah Prospect | Prospect |
| Kaiyuh Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
64° 4' 58'' North , 158° 46' 4'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Kaltag | 189 (2017) | 27.3km |
Location: The Kaiyah prospect is about 1 mile west of the Yukon River, and 3 miles east of Poison Creek. The coordinates are for the approximate center of the prospect, near VABM Kaiyah in sec. 24, T. 16 S., R. 1 W., Kateel River Meridian. This prospect is on Doyon, Ltd. selected land. The location is accurate.
Geology: The country rocks in the area of the Kaiyah prospect consist of deltaic sandstone, shale, and conglomerate adjacent to the Poison Creek caldera. The caldera is expressed topographically as a curvilinear fault contact between the volcanic rocks inside the caldera and Koyukuk sedimentary rocks around it. Landsat and magnetic data suggest that the caldera system may be over 20 kilometers in diameter. The volcanic rocks include intermediate to felsic ash flow tuffs, massive basaltic andesite, and a small area of siliceous sinter (North Star Exploration, Inc., 2001). Anomalous values of gold and silver occur in surface samples of silicified sedimentary rocks east of the caldera rim, in an area of radial faulting. The silicified rocks are cut by chalcedonic quartz veinlets, vuggy druse coatings, and blue-gray quartz veinlets. In addition to the silicification, the hostrocks locally are argillized (clay altered). Core holes drilled in 2000 intersected extensive zones of polyphase quartz veining, advanced argillic alteration, polymetallic sulfides, and mineralized dikes. Drill holes were targeted at two east-west-trending vein systems, the Main and South veins, which are approximately 250 feet apart (Avalon Development newsletter, Jan., 2001). Bundtzen and Miller (1997) first reported gold in epithermal quartz veins at the prospect in 1997. Subsequent fieldwork by North Star Exploration Inc. in 1999 resulted in the definition of more widespread mineralization. In 250 rock samples, gold averages 110 ppb, and silver averages 20 ppm. Gold ranges up to 10.4 ppm and silver up to 13.6 ounces per ton. Samples also contain anomalous values of arsenic, bismuth, and mercury (North Star Exploration, Inc., 2001).
Workings: During 1999 and 2000, North Star Exploration Ltd. explored the Kaiyah prospect with geologic mapping, geophysics, and Landsat image analysis. In 2000, 2,776 feet of core drilling were completed.
Alteration: Silicification and argillization.
Commodities (Major) - Ag, Au
Development Status: None
Deposit Model: Epithermal Au-Ag (Cox and Singer, 1986; model 25c)
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
1 valid mineral.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | |||
|---|---|---|---|
| ⓘ | Quartz | 4.DA.05 | SiO2 |
Other Databases
| Link to USGS - Alaska: | NL024 |
|---|
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