Sjodin prospect, Wood Chop Mesa, Bidahochi, Hopi Buttes Mining District, Navajo Co., Arizona, USAi
|Regional Level Types|
|Wood Chop Mesa||Mesa|
|Hopi Buttes Mining District||Mining District|
An U occurrence/prospect located in approximate sec. 24, T25N, R23E, G&SRM,
20.3 km (12.6 miles) NE of Wood Chop Mesa and 25.9 km (16.1 miles) NE of Bidahochi. Hopi Buttes The geographic coordinates provided are for the center of sec. 24. This locality is not listed in the USGS MRDS database.
Mineralization is an U deposit hosted in the Bidahochi Formation. The ore is autunite in volcanic agglomerate and associated sediments and spring deposits.
Workings include exploratory drilling.
Regions containing this locality
|North America Plate||Tectonic Plate|
|Colorado Plateau, USA||Plateau|
|Navajo Nation Indian Reservation, USA||Reservation|
|Hopi-Navajo Indian Reservations, Colorado Plateau, Apache; Navajo and San Juan Cos., Arizona & Utah, USA|
Select Mineral List TypeStandard Detailed Strunz Dana Chemical Elements
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
1 valid mineral.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
Detailed Mineral List:
| ⓘ Autunite|
Formula: Ca(UO2)2(PO4)2 · 11H2O
Reference: 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: 224.
List of minerals arranged by Strunz 10th Edition classification
|Group 8 - Phosphates, Arsenates and Vanadates|
|ⓘ||Autunite||8.EB.05||Ca(UO2)2(PO4)2 · 11H2O|
List of minerals arranged by Dana 8th Edition classification
|Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES|
|AB2(XO4)2·xH2O, containing (UO2)2+|
|ⓘ||Autunite||40.2a.1.1||Ca(UO2)2(PO4)2 · 11H2O|
List of minerals for each chemical element
|H||ⓘ Autunite||Ca(UO2)2(PO4)2 · 11H2O|
|O||ⓘ Autunite||Ca(UO2)2(PO4)2 · 11H2O|
|P||ⓘ Autunite||Ca(UO2)2(PO4)2 · 11H2O|
|Ca||ⓘ Autunite||Ca(UO2)2(PO4)2 · 11H2O|
|U||ⓘ Autunite||Ca(UO2)2(PO4)2 · 11H2O|
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
|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.
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. 
2.588 - 5.333 Ma
|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.