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Allentown Mine, Sanders, Sanders-Defiance Plateau area (Sanders-Cheto District), Apache Co., Arizona, USAi
Regional Level Types
Allentown MineMine
Sanders-Defiance Plateau area (Sanders-Cheto District)Area
Apache Co.Mine

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Latitude & Longitude (WGS84):
35° 11' 36'' North , 109° 14' 14'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Sanders630 (2011)9.1km
Houck1,024 (2011)10.3km
Wide Ruins176 (2011)34.4km
Zuni Pueblo6,302 (2011)37.6km
Black Rock1,323 (2011)42.2km

A clay occurrence/former mine located in the NW¼ sec. 25 & 26, T21N, R29E, G&SRM, 9.1 km (5.7 miles) ESE of Sanders, 10.3 km (6.4 miles) SSW of Houck and 13.1 km (8.1 miles) SSW of Allentown, on private land. First production occurred in 1924. Owned by the Filtrol Corporation, California. The USGS MRDS database stated accuracy for this locality is 500 meters.

Mineralization is clay in Pliocene latite ash in the Bidahochi Formation. a 4 foot thick bentonite bed is comprised chiefly of calcium montmorillonite and contains only minor quartz and feldspar impurities. The bentonite is nearly pure calcium montmorillonite with a high crystallinity and a large surface area that produces extraordinary sorptive properties. Local alteration involves vitric latite ash. Local rocks include Pliocene to middle Miocene deposits.

Regional geologic structures include the Defiance Uplift.

Production was considerable. The average overburden of the mined deposits was nearly 100 feet in 1987 and stripping costs were high.

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

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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

Mineral List

Detailed Mineral List:

Reference: Elevatorski, E.A. (1978), Arizona Industrial Minerals, AZ Dept. of Min. Resources, Min Rpt. No. 2; Patterson, S.H. (1969), "Clay", in AZ Bur. Mines Bull. 180, USGS Bull. 71: 329.; USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, deposit ID #10208017.
'Feldspar Group'
Reference: Elevatorski, E.A. (1978), Arizona Industrial Minerals, AZ Dept. of Min. Resources, Min Rpt. No. 2; Patterson, S.H. (1969), "Clay", in AZ Bur. Mines Bull. 180, USGS Bull. 71: 329.

List of minerals arranged by Strunz 10th Edition classification

Unclassified Minerals, Rocks, etc.
'Feldspar Group'-

List of minerals arranged by Dana 8th Edition classification

Unclassified Minerals, Mixtures, etc.
'Feldspar Group'-

List of minerals for each chemical element

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 Macrostrat.org

Gelasian - Burdigalian
1.806 - 20.44 Ma

ID: 2919112
Pliocene to middle Miocene deposits

Age: Cenozoic (1.806 - 20.44 Ma)

Description: Moderately to strongly consolidated conglomerate and sandstone deposited in basins during and after late Tertiary faulting. Includes lesser amounts of mudstone, siltstone, limestone, and gypsum. These deposits are generally light gray or tan. They commonly form high rounded hills and ridges in modern basins, and locally form prominent bluffs. Deposits of this unit are widely exposed in the dissected basins of southeastern and central Arizona. (2-16 Ma)

Comments: In dissected basins of southeast and central Arizona Original map source: Arizona Geological Survey, DI-8 Geologic Map of Arizona, Digital Spatial data for the Geologic Map of Arizona, v. 3.0, edited by S.M. Richard and S.M. Kneale, 2002, 10 p., 2 DOS HD disks. Arc/INFO export file (.e00) format, scale 1:1,000,000.

Lithology: Major:{conglomerate,sandstone}, Minor:{mudstone,siltstone,limestone,gypsum}

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]

2.588 - 5.333 Ma

ID: 3187166
Cenozoic sedimentary rocks

Age: Pliocene (2.588 - 5.333 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

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


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Kiersch, G.A. (1955), Mineral resources Navajo-Hopi Indian reservations, Arizona-Utah, Vol. II, University of Arizona: 44.
Patterson, S.H. (1969), "Clay", in Arizona Bureau of Mines Bulletin 180, USGS Bulletin 871: 329.
Elevatorski, E.A. (1978), Arizona Industrial Minerals, Arizona Department of Mineral Resources, Mineral Report No. 2, 70 p.
Eyde, T.H., and Eyde, D.T. (1987), Bentonite and specialty sand deposits in the Bidahochi formation, Apache County, Arizona, in: Peirce, H.W., editor, Proceedings of the 21st Forum on the Geology of Industrial Minerals: Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Special Paper 4: 123-127.
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
Peirce, H. Wesley (1990), Arizona Geological Survey Industrial Minerals card file.
U.S. Bureau of Mines (1995), Minerals Availability System/Mineral Industry Location System (MAS/MILS), U.S. Bureau of Mines, file ID #0040010017.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10105110 & 10208017.
Arizona Department of Mineral Resources, Industrial Minerals Report.
Tolapai Spring, Arizona 7.5 minute quadrangle map.
USGS 7.5 Tolapai Spring quadrangle topo map.
USGS crib list record #TC10269.

USGS MRDS Record:10208017
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