Location: Deposits on a small tributary of Skimo Creek and on Tiglukpuk Creek. Within one mile.
Geology: Phosphate deposits restricted to black chert and shale unit of the Alapha Limestone of late Mississippian age. Phosphate rock and phosphorites occur within a section of interbedded oolitic to pisolitic limestone, chert, and shale. Marked variation in lithologic character of phosphate content. Fluorite was a constituent of all samples studied.
Workings: A 36 ft thick sequence averages 8% P2O5; a 43 in. thick sequence averages 21% P2O5; and 6 beds, none more than 5.5 in. thick, contain 30% P2O5. Samples analyzed for vanadium contained .04% - .10% V2O5. Samples collected by USBM contained up to 23% phosphate with 1035 ppm V.
Age: Mississippian

Commodities (Major) - P; (Minor) - V
Development Status: No
Deposit Model: Bedded phosphorite

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Vanadium

Mineral List

ⓘ Fluorapatite

1 valid mineral.

Detailed Mineral List:

ⓘ Fluorapatite

Formula: Ca₅(PO₄)₃F

References:

(2008) Alaska Resource Data File (ARDF) Open-File Report 2008-1225. US Geological Survey

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Fluorapatite	8.BN.05	Ca₅(PO₄)₃F

List of minerals for each chemical element

O	Oxygen
O	ⓘ Fluorapatite	Ca₅(PO₄)₃F
F	Fluorine
F	ⓘ Fluorapatite	Ca₅(PO₄)₃F
P	Phosphorus
P	ⓘ Fluorapatite	Ca₅(PO₄)₃F
Ca	Calcium
Ca	ⓘ Fluorapatite	Ca₅(PO₄)₃F

Other Databases

Link to USGS - Alaska:	CL002

Other Regions, Features and Areas containing this locality

North AmericaContinent

Brooks RangeMountain Range
Rocky MountainsMountain Range

North America PlateTectonic Plate

Brooks-Northslope Mag DomainDomain
Colville Basin and FoldbeltBasin

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in northern Alaska: U.S. Geological Survey Open-File Report 75-628, 106 p. Grybeck, Donald, 1977, Map showing known mineral deposits of the Brooks Range, Alaska: U.S. Geological Survey Open-File Report 77-166-C, 45 p., 1 sheet, scale 1:1,000,000. Kurtak, J.M., Meyer, M.P., Hicks, R.W., Werdon, M.B., and Mull, C.G., 1995, Mineral investigations in the Colville mining district and southern National Petroleum Reserve in Alaska: U.S. Bureau of Mines Open-File Report 8-95, 217 p. Meyer, M.P., 1994, Analytical results from U.S. Bureau of Mines investigations in the Colville Mining District, Alaska: U.S. Bureau of Mines Open-File Report 34-94, 137 p. Patton, W.W., Jr., and Matzko, J.J., 1959, Phosphate deposits in northern Alaska: U.S. Geological Survey Professional Paper 302-A, p. 1-17. Patton, W.W., Jr., and Tailleur, I.L., 1964, Geology of the upper Killik-Itkillik region, Alaska: U.S. Geological Survey Professional Paper 303-G, p. 409-500.

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