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Whirlwind Mine, Monitor Butte, Monument Valley District (Monumental District), Monument Valley, San Juan Co., Utah, USA

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Latitude & Longitude (WGS84): 37° 14' 52'' North , 110° 26' 42'' West
Latitude & Longitude (decimal): 37.2477760315, -110.444999695
An U-V occurrence/mine located in the NW¼SE¼SW¼ sec. 2, T41S, R13E, SLM, on Monitor Butte, on a located claim. APPROXIMATELY 1.2 MILES NE OF MONITOR BUTTE. Adit shown and labeled on topo.

Mineralization is hosted in Late Triassic sandstone of the Shinarump member of the Chinle Formation and conglomerate. The ore body is tabular in form, strikes N10E and dips 5NW at a thickness of 1.83 meters, width of 22.86 meters, and a length of 45.72 meters. The depth-to-bottom is 30.48 meters. Controls for ore emplacement included paleochannels and carbonaceous material. Data copied from USGS MRDS deleted record #10252004: length of 61 meters, width of 15 meters and a thickness of 1.2 meters, strike N15E and dip of 5E. Depth to top of 31 meters. Replacement body with a primary mode of origin of other. Primary ore control was lithology. Local alteration include bleaching in sandstone. Local rocks include Permian (1) sedimentary rocks in southeastern Utah.

Workings included underground openings with a length of 426.72 meters and an overall depth of 38.1 meters.

Production data are found in: Utah Geology and Mining Survey Study (1973).

Reserve and Resource data are found in: Trimble, L. M. (1977).

Mineral List

7 entries listed. 7 valid minerals.

The above list 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.


Bain, G. W. (1952), Uranium Deposits in Southwestern Colorado Plateau, U.S. Atomic Energy Commission RMO 982 (revised).

Evensen, C. G., and Gray, I. B. (1958), Evaluation of Uranium Ore Guides, Monument Valley, Arizona and Utah, Economic Geology: 53(6) (Septmeber-October): 634-662.

U.S. Atomic Energy Commission (1959), Guidebook to Uranium Deposits of Western U.S.

Witkind, Irving J. & Thaden (1963), Geology & Uranium-Vanadium Deposits of the Monument Valley Area Apache and Navajo Counties, Arizona, USGS Bulletin 1103: 92.

Utah Geology and Mining Survey Study (1973).

Trimble, L. M. (1977).

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10078622.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0490370148.

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