Location: The Schubert mine is located in the SE1/4NW1/4 sec. 29, T. 2 N., R. 2 E., Fairbanks Meridian. This prospect is on the divide betwee Johnson Creek and Gilmore Creek, about 1 mile west-southwest of Gilmore Dome. The prospect is locality 31 of Cobb (1972 [MF 410]).
Geology: A 35-foot trench exposes a granite-schist contact (Byers, 1957). The schistocity is vertical and trends N. 35-40 E. At the bottom of the trench, there was 20 feet of porphyritic granite, 0.5 feet of glassy quartz, 7.5 feet of hornsfelsed mica schist, 7 feet of scheelite-bearing silicified limestone, and limestone. Scheelite occurs as sparsely scattered grains in a 2-inch band in silicified limestone.
Workings: In 1957, there was a 35-foot trench that exposed a granite-schist contact (Byers, 1957, p. 189).

Commodities (Major) - W
Development Status: None
Deposit Model: W skarn deposit (Cox and Singer, 1986; model 14a)

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.

ⓘ Tungsten

Mineral List

ⓘ Scheelite

1 valid mineral.

Detailed Mineral List:

ⓘ Scheelite

Formula: Ca(WO₄)

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 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Scheelite	7.GA.05	Ca(WO₄)

List of minerals for each chemical element

O	Oxygen
O	ⓘ Scheelite	Ca(WO₄)
Ca	Calcium
Ca	ⓘ Scheelite	Ca(WO₄)
W	Tungsten
W	ⓘ Scheelite	Ca(WO₄)

Other Databases

Link to USGS - Alaska:	FB111

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

North America PlatformPassive Margin
Yukon-Tanana lower DomainDomain

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

Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p. Byers, F.M., Jr., 1957, Tungsten deposits in the Fairbanks district, Alaska: U.S. Geological Survey Bulletin 1024-I, p. 179-216. Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate. Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000. Cobb, E.H., 1975, Mineral resources of Alaska, in Yount, M.E., ed., U.S. Geological Survey Alaska Program, 1975: U.S. Geological Survey Circular 722, p. 37. Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.

Quick NavTop Commodities Mineral List Other Databases Other Regions References

Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 4, 2026 10:11:02 Page updated: August 3, 2025 12:50:49

Go to top of page