Latitude & Longitude (WGS84):
65° 58' 14'' North , 166° 11' 44'' West
Latitude & Longitude (decimal):
Mindat Locality ID:
200364
Long-form identifier:
mindat:1:2:200364:4
Location: Tin Creek, within the Bering Land Bridge National Preserve, drains the lower elevations of the north flank of Ear Mountain. Ear Mountain is an isolated upland reaching a maximum elevation of 2,329 feet in the north-central Teller D-3 quadrangle. This locality is at 525 feet elevation in the headwaters of Tin Creek, 0.9 miles northwest of the Ear Mountain landing strip. This is locality 53 of Cobb and Sainsbury (1972) and Cobb (1975) summarized relevant references under the name 'Tin Cr., trib. Shishmaref Inlet'.
Geology: The Ear Mountain upland is cored by a Late Cretaceous (76.7 +/- 2.8 my) composite biotite granite stock (Sainsbury, 1972; Hudson and Arth, 1983). Country rocks to this stock are an impure and schistose carbonate sequence of unknown but probable Paleozoic age. Tin Creek does not have headwaters that cross the contact zone of the Ear Mountain granite stock directly although tundra-mantled slopes above the headwater area continue upward for 1.5 miles south to an area of significant lode tin metallization (Ear Mountain prospect, TE060)). A USBM churn-drill hole at this locality encountered 3 feet of overburden and three feet of gravel. The gravel contained a trace of tin per cubic yard and identified minerals included calcite, quartz, diopside, actinolite, tourmaline, orthoclase, albite, limonite (pseudomorph after pyrite), and cassiterite (Mulligan, 1959, p, 30).
Workings: One USBM churn-drill hole was completed here (Mulligan, 1959).
Age: Quaternary
Commodities (Major) - Sn
Development Status: None
Deposit Model: Alluvial tin placer (Cox and Singer, 1986; model 39e)
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Standard
Detailed Gallery
Strunz
Chemical Elements
Commodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
7 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
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Alphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
Gallery:
List of minerals arranged by Strunz 10th Edition classification
List of minerals for each chemical element
Other Databases
| Link to USGS - Alaska: | TE059 |
|---|
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References
Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Teller quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-587, 130 p. Cobb, E.H., and Sainsbury, C.L., 1972, Metallic mineral resources map of the Teller quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-426, 1 sheet, scale 1:250,000. Hudson, T.L., and Arth, J. G., 1983, Tin granites of Seward Peninsula, Alaska: Geological Society of America Bulletin, v. 94, p. 768-790. Mulligan, J.J., 1959, Tin placer and lode investigations, Ear Mountain area, Seward Peninsula, Alaska: U.S. Bureau of Mines Report of Investigations 5493, 53 p. Sainsbury, C.L., 1972, Geologic map of the Teller quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Map I-685, 4 p., 1 sheet, scale 1:250,000.
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