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Blackbird Mine (Pioneer Mine), Big Indian District (Big Indian Wash - Lisbon Valley Area), San Juan Co., Utah, USA

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Latitude & Longitude (WGS84): 38° 8' 34'' North , 109° 8' 12'' West
Latitude & Longitude (decimal): 38.14278,-109.13667
Köppen climate type:BSk : Cold semi-arid (steppe) climate


REF:Deposit:: DIX, G. P. (JR.), 1954 , THE URANIUM DEPOSITS OF BIG INDIAN WASH, SAN JUAN CO., UTAH, USAEC RME 4022 (REV.)
Deposit:: ISACHSEN, Y. W., 1954 , ORE DEPOSITS OF THE BIG INDIAN WASH AREA, GUIDEBOOK TO THE GEOLOGY OF UTAH, NO. 9 , UGA.
Deposit:: W
Commodities (Major) - Copper
Development Status: Past Producer
Host Rock Unit: Salt Wash Member Of Morrison Formation
Structure: Lisbon Valley Fault
Host Rock: Sandstone
Tectonic Structure: Stable Platform

Mineral List


16 valid minerals.

Rock Types Recorded

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Select Rock List Type

Alphabetical List Tree Diagram

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

Holocene - Pleistocene
0 - 2.588 Ma



ID: 2181814
Mixed eolian and alluvial deposits

Age: Pleistocene (0 - 2.588 Ma)

Description: Light-brown, red, and gray-yellow wind-blown sand and silt in thin sheet-like deposits covering tops of mesas and plateaus or as thicker deposits filling broad valleys, hollows, and other basins; locally interspersed with silt, sand and gravel of alluvial origin; generally dominated by eolian deposits; grades into stream-deposited sand and silt along washes and includes some modern alluvium; commonly displays a well-developed caliche soil horizon near the top; as much as 12 meters (40 ft) thick; Holocene to middle Pleistocene.

Reference: Doelling, H.H. Geologic map of the La Sal 30'x60'quadrangle, San Juan, Wayne, and Garfield Counties, Utah and Montrose and San Miguel Counties, Colorado. Utah Geological Survey. [31]

Early Jurassic
174.1 - 201.3 Ma



ID: 2966354
Glen Canyon Group

Age: Early Jurassic (174.1 - 201.3 Ma)

Stratigraphic Name: Glen Canyon Group

Description: Glen Canyon Group (Navajo Ss, Kayenta Fm, and Wingate Ss). Includes Rainbow Bridge.

Comments: Eolian and floodplain fluvial

Lithology: Major:{arenite}, Minor:{sandstone mudstone}, Incidental:{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 Macrostrat.org, used under Creative Commons Attribution 4.0 License



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