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Thomas Range, Juab Co., Utah, USA

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About 1/2 the days finds

Thomas Range, Juab Co., Utah, USA
Larry & Pat Sifting Sand

Thomas Range, Juab Co., Utah, USA
Location is approximate, estimate based on other nearby localities.
Latitude & Longitude (WGS84): 39° North , 112° West (est.)
Margin of Error:~2km
Köppen climate type:Dfb : Warm-summer humid continental climate

A N-S trending mountain range located in west central Utah.

Mineral List

Mineral list contains entries from the region specified including sub-localities

45 valid minerals. 3 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Rock Types Recorded

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Localities in this Region

This page contains all mineral locality references listed on 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 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.


Bixby (1902), Catalog of Utah Minerals.

Page, L. R., Stocking, H. E., Smith, H. B. (1956), Contributions to the geology of uranium and thorium by the United States Geological Survey and Atomic Energy Commission for the United Nations International Conference on Peaceful Uses of Atomic Energy, Geneva, Switzerland, 1955. USGS Professional Paper 300: 97-103.

Outerbridge, W.F., et al (1960), Weeksite, a new uranium silicate from the Thomas Range, Juab County, Utah, American Mineralogist: 45: 39-52.

Ream, Lanny (1979), The Thomas Range, Wah Wah Mountains, and vicinity, western Utah. The Mineralogical Record: 10: 261-278.

Lapis 5 (1986): 5.

Mineralogical Record (1986): 17(5): 342.

American Mineralogist (1989): 74: 1325.

Rocks & Minerals (1998): 73(3): 196-201.

Bowling, R. (2011), Topaz from Utah's Maynard Mine, Extra Lapis English: 14: 22-25.

Jahn, S. (2013): Topas von der Thomas Range - ein Klassiker in vielerlei Hinsicht. Mineralien-Welt 24 (6), 70-81 (in German).

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