Unnamed Occurrence (ARDF - TN065; west of Elephant Gulch), Hot Springs Mining District, Yukon-Koyukuk Census Area, Alaska, USAi
| Regional Level Types | |
|---|---|
| Unnamed Occurrence (ARDF - TN065; west of Elephant Gulch) | - not defined - |
| Hot Springs Mining District | Mining District |
| Yukon-Koyukuk Census Area | Census Area |
| Alaska | State |
| USA | Country |
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Latitude & Longitude (WGS84):
65° 15' 8'' North , 150° 2' 13'' West
Latitude & Longitude (decimal):
Köppen climate type:
Location: This occurrence is at an elevation of 2,400 feet, on a small southern spur of Elephant Mountain west of Elephant Gulch. The site is at Alaska Division of Geological and Geophysical Surveys (ADGGS) sample station 97KC080 (Liss and others, 1998), on the boundary between sections 16 and 21, T. 5 N., R. 12 W., of the Fairbanks Meridian. The location is accurate within 500 feet.
Geology: Elephant Mountain is underlain by Cretaceous granite that intrudes Jurassic or Cretaceous quartzite, sandstone, siltstone, and shale (Chapman and others, 1982; Reifenstuhl and others, 1997 [RI 97-15a]). The Elephant Mountain pluton is one of several 90 Ma alkalic plutons that crop out in the eastern Tanana, central Livengood, and western Circle quadrangles. It apparently is a northeast-trending, dikelike body about a mile wide and 5 miles long in outcrop, cut off by high-angle faults at its northeastern and southwestern ends (Reifenstuhl and others, 1997 [RI 97-15a]). Most of the pluton is trachytoidal, quartz-free syenite and subequigranular quartz syenite, with a core of altered, equigranular quartz syenite, granite, and pegmatite. Bedrock in the Elephant Gulch area is Lower Cretaceous graywacke, sandstone, conglomerate, and shale. The bedded rocks locally are hornfelsed, with development of unoriented crystals or rosettes of muscovite and biotite. The area is cut by west-northwest-trending, high-angle faults. A sample (96KC080) of dark gray, matrix-supported conglomerate, sandstone, and quartzite from the west side of upper Elephant Gulch contained 134 parts per million (ppm) antimony and 260 ppm zinc (Liss and others, 1998). There is no record of exploration or mining at this site.
Workings: A sample (96KC080) of dark gray, matrix-supported conglomerate, sandstone, and quartzite from the west side of upper Elephant Gulch contained 134 parts per million (ppm) antimony and 260 ppm zinc (Liss and others, 1998). There is no record of exploration or mining at this site.
Commodities (Major) - Sb, Zn
Development Status: None
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | TN065 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Arctic AlaskaPassive Margin
- Wickersham DomainDomain
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