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Lander Area No. 1 Occurrence, Fremont Co., Wyoming, USAi
Regional Level Types
Lander Area No. 1 OccurrenceOccurrence
Fremont Co.County

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Latitude & Longitude (WGS84): 42° 49' 30'' North , 108° 40' 60'' West
Latitude & Longitude (decimal): 42.82500,-108.68333
GeoHash:G#: 9xdewu51w
USGS MRDS Record:10278899
Locality type:Occurrence
Köppen climate type:BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
Lander7,686 (2017)4.0km
Hudson456 (2017)12.1km
Boulder Flats408 (2011)13.6km
Arapahoe1,656 (2011)21.9km
Ethete1,553 (2011)23.4km

Commodities (Major) - Gypsum-Anhydrite
Development Status: Occurrence

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

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

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

Late Cretaceous
66 - 100.5 Ma

ID: 3217600
Cody Shale

Age: Late Cretaceous (66 - 100.5 Ma)

Stratigraphic Name: Cody Shale

Description: Gray, interbedded sandstone and shale; variably grades from lower silty and sandy shales to siltstone and shaly sandstones above; generally slope-forming, although upper sandstones may form cliffs; thickness from 4,000 to 5,000 feet (1,200 to 1,500 m)

Reference: Johnson, J.F. and W.M. Sutherland. Geologic Map Of The Lander 30' X 60' Quadrangle, Fremont County, Wyoming. Wyoming State Geological Survey Map Series 87. [157]

66 - 145 Ma

ID: 3188592
Mesozoic sedimentary rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Sandstone,marl,shale

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]

72.1 - 83.6 Ma

ID: 2884414
Cody Shale

Age: Late Cretaceous (72.1 - 83.6 Ma)

Stratigraphic Name: Cody Shale

Description: (Northern Yellowstone area) - Gray to brown shale and siltstone. (North and South Wyoming) - Dull-gray shale, gray siltstone, and fine-grained gray sandstone.

Comments: Original map source: Green, Gregory N., and Drouillard, Patricia H., 1994, The Digital Geologic Map of Wyoming in ARC/INFO Format: U.S. Geological Survey Open-File Report 94-0425, scale 1:500,000.

Lithology: Major:{shale,siltstone}, Minor:{sandstone}

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, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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