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Martin Johnson No. 4 Mine, Willow Springs, Coconino Co., Arizona, USAi
Regional Level Types
Martin Johnson No. 4 MineMine
Willow SpringsTown
Coconino Co.County

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Latitude & Longitude (WGS84):
36° 10' 10'' North , 111° 23' 57'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Tuba City8,611 (2011)14.8km
Moenkopi964 (2011)17.2km
Cameron885 (2016)32.7km
Tonalea549 (2011)42.6km
Other/historical names associated with this locality:
Martin Johnson #4; M. Johnson #4

An U occurrence/prospect located in sec. 11, T32N, R9E, G&SRM, about 2.3 km (1.4 miles) SSW of Willow Springs. This locality is not listed in the USGS MRDS database. The geographic coordinates presented for this locality are approximate to the center of sec. 11.

Mineralization is an U deposit hosted in limonite-stained, platy, carbonaceous sandstone of the Shinarump Member of the Chinle Formation with secondary minerals.

Workings include surface openings comprised of rim stripping and shallow pits.

Production was 38 tons of ore @ 0.16% U3O8; 0.03% V2O5.

Regions containing this locality

North America PlateTectonic Plate
Colorado Plateau, USAPlateau
Navajo Nation Indian Reservation, USAReservation
Hopi-Navajo Indian Reservations, Colorado Plateau, Apache; Navajo and San Juan Cos., Arizona & Utah, USA

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Standard Detailed Strunz Dana Chemical Elements

Commodity List

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

No minerals currently recorded for this locality.

List of minerals for each chemical element


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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Scarborough, Robert B. (1981), Radioactive occurrences and uranium production in Arizona, Arizona Bureau of Geology and Mineral Technology Report for U.S. Department of Energy (Atomic Energy Commission), GJBX-143. RME-2071: 155.
U.S. Department of Energy files.
USGS Moa Ave NW, Arizona, quadrangle 7½ minute topo map.
Marble Canyon National Topographic Map Series (NTMS) 1° x 2° map.

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