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Pinta Dome helium-gas field, Joseph City, Holbrook Mining District, Navajo Co., Arizona, USAi
Regional Level Types
Pinta Dome helium-gas fieldGas Field
Joseph CityCity
Holbrook Mining DistrictMining District
Navajo Co.County

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Latitude & Longitude (WGS84):
35° 5' 25'' North , 110° 13' 41'' West
Latitude & Longitude (decimal):
Locality type:

An He occurrence located in secs. 28, 32, 33, 34 & 35, T20N, R26E and in secs. 2, 4 & 10, T19N, R26E, G&SRM, approximately 17.7 km (11.0 miles) NNE of Joseph City and 21.4 km (13.3 miles) NNW of Holbrook. Operated during the period 1961-1975. Operated by Kerr-McGee Corporation and Eastern Petroleum.

Mineralization is a helium gas deposit hosted in the Late Permian Coconino sandstone. The ore body is 99.06 meters thick. The deposit lies within the Pinta Anticline, an E-W-trending, doubly plunging structure with about 100 feet of relief, which dips on its flanks typically 0.5 - 1.5°. The Moenkopi formation's micaceous siltstone and silty mudstone form an impermeable cap. The porosity of the sandstone may be as high as 20%. The Pinta Dome fault offsets the NE flank of the dome. Local rocks include rocks of the Chinle Formation.

Regions containing this locality

North America PlateTectonic Plate
Colorado Plateau, USAPlateau

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Formula: He
Reference: Spencer, Jon (1983), Helium resources and production in Arizona: Fieldnotes, Vl. 13, No. 2: 6-7, 15-16; Peirce, H.W. (1990), AZ Geol. Sur. Industrial Minerals card file.

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H HeliumHe


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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Spencer, Jon (1983), Helium resources and production in Arizona: Fieldnotes: 13(2): 6-7, 15-16.
Peirce, H.W. (1990), Arizona Geological Survey, Industrial Minerals card file.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10060201.

USGS MRDS Record:10060201

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