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Monument No. 2 Mine, Monument No. 2 channel, Yazzi Mesa, Monument Valley, Navajo Indian Reservation, Apache Co., Arizona, USA

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Latitude & Longitude (WGS84): 36° 56' 19'' North , 109° 53' 15'' West
Latitude & Longitude (decimal): 36.93870,-109.88764

A former U-V occurrence/mine with minor Cu-Mo-Pb-Fe, located in the Monument No. 2 channel (paleochannel), about 1 mile West of Comb Ridge and SE of Yazzie Mesa on the east limb of the Monument upwarp, in en echelon strike and slip vertical faults along the channel. Discovered by Luke Yazzie, a Navajo, in 1942 and started during 1945. Reopened in 1948. Subsequently owned by the Vanadium Corp. of America.

Mineralization is the Monument No. 2 channel, one of the richest U-V deposits in the Monument Valley area. It is a short channel comprised of medium-grained, massive sandstone. The channel strikes N18W and is about 1¾ miles long. It ranges in width in its central part from 400 feet to 700 feet and has been cut into the underlying strata with a depth of about 50 feet.

There are 4 types of ore bodies: rods, tabular, corvusite-type and rolls. Rods are cylindrical bodies about 3 to 5 feet wide and 2 to 3 feet high and 15 to 20 feet long and are found only in the Shinarump member of the Chinle formation. The tabular ore bodies are blanket-like masses composed of channel sediments impregnated with yellow U-V minerals. These are 40 to 50 feet long and range in width from 20 to 30 feet and 3 to 5 feet thick. The corvusite-type ore bodies are irregularly shaped masses within which the rock is thoroughly penetrated by vanadium minerals. Rolls are similar bodies in the Morrison formation.

Mineral List

48 valid minerals. 1 (TL) - type locality of valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Kungurian - Moscovian
272.3 - 315.2 Ma
Permian to Pennsylvanian sedimentary rocks

Age: Paleozoic (272.3 - 315.2 Ma)

Stratigraphic Name: Hermit Formation; Supai Group; Schnebly Hill Formation; Naco Group

Description: Interbedded sandstone, shale, and limestone usually characterized by ledgy outcrops. Orange to reddish sandstone forms cliffs near Sedona. This unit includes Supai Group and Hermit Shale in northern Arizona and Naco Group in southern Arizona. It was deposited in coastal-plain to shallow-marine settings during time of variable and changing sea level. Rocks of this map unit in southern Arizona may be in part equivalent to Permian rocks of map unit P in central and northern Arizona. (280-310 Ma)

Lithology: Major:{sandstone,shale,limestone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

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.


Gruner, J.W. & L. Gardiner (1952): Mineral association in the uranium deposits of the Colorado Plateau and adjacent regions with special emphasis on those in the Shinarump formation, part 3, Annual Report July 1, 1951 - June 30, 1952, US Atomic Energy Commission RMO 566. Technical Information Service, Oak Ridge, Tennessee.

Rosenzweig, A., et al (1954): Widespread occurrence and character of uraninite in the Triassic and Jurassic sediments of the Colorado Plateau. Economic Geology. 49: 351-361.

Weeks, A.D., et al (1954): Navajoite, a new vanadium oxide from Arizona. Science, 119: 326.

Isachsen, Y.W., et al (1955): Age and sedimentary environment of uranium host rocks, Colorado Plateau. Econonomic Geology, 50: 127-134.

Mitcham, T.W. & C.G. Evensen (1955): Uranium ore guides, Monument Valley district, Arizona. Economic Geology, 50: 170-176.

Weeks, A.D., et al (1955): Navajoite, a new vanadium oxide from Arizona. American Mineralogist, 40: 207-212.

Wright, R.J. (1955): Ore controls in sandstone uranium deposits of the Colorado Plateau. Economic Geology, 50: 135-155.

Frondel, C. (1956): Mineral composition of gummite. American Mineralogist, 41: 539-568.

Finnell, T.L. (1957): Structural control of uranium ore at the Monument No. 2 mine, Apache Co., AZ. Econonomic Geology, 52: 25-35.

Stern, T.W. et al (1957): Doloresite, a new vanadium oxide mineral from the Colorado Plateau. American Mineralogist, 42: 587-593.

Evensen, C.G. & I.B. Gray (1958): Evaluation of uranium ore guides, Monument Valley, AZ and UT. Economic Geology, 53: 639-662.

Frondel, C. (1958): Systematic mineralogy of uranium and thorium. USGS Bull. 1064: 68, 78, 91, 220, 253, 264.

Jensen, M.L. (1958): Sulphur isotopes and the origin of sandstone-type uranium deposits.Economic Geology: 53: 598-616.

New Mexico Geol Soc. 24th. Guidebook.

Brennan (1959): Minerals of Arizona: 34, 35, 36, 75, 77, 78, 79, 104.

Ross, M. (1959):Mineralogical applications of electron diffraction.II. Studies of some vanadium minerals of the Colorado Plateau. American Mineralogist: 44: 322-341.

Witkind, I.J. & R.E. Thaden (1963): Geology and uranium-vanadium deposits of the Monument Valley area, Apache and Navajo Counties, Arizona: 68-69, 95, 105-129.

Young, R.G. (1964): Distribution of uranium deposits in the White Canyon-Monument Valley district, Utah-Arizona. Economic Geology: 59: 850-973.

Johnson, H.S. (1966), Uranium deposits of the Moab, Monticello, White Canyon and Monument Valley District, Utah and Arizona, USGS Bulletin 1222-H.

Galbraith, F.W. & D.J. Peirce, W.H. (1970), Coal, oil, natural gas, helium, and uranium in Arizona, Arizona Bureau of Mines Bulletin 182: 235-248.

Rocks & Minerals (1989): 64: 500.

Evans, H. and J. Hughes (1990) Crystal chemistry of the natural vanadium bronzes. American Mineralogist: 75: 508-521.

Haynes, P. (1991), Arizona News, Mineral News: Jan: 9.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 115, 116, 124, 131, 140, 154, 155, 181, 189, 207, 220, 222, 226, 241, 250, 258, 261, 265, 294, 295, 296, 297, 304, 311, 321, 323, 352, 357, 364, 365, 380, 386, 406, 407, 408, 411, 412, 414, 415.

Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 8.

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