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Eight Mile Park, Eight Mile Park pegmatite District, Fremont Co., Colorado, USA

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Latitude & Longitude (WGS84): 38° 29' 29'' North , 105° 20' 16'' West
Latitude & Longitude (decimal): 38.49148,-105.33781
GeoHash:G#: 9wv4fzpm5
Locality type:Park
Köppen climate type:BSk : Cold semi-arid (steppe) climate
Other/historical names associated with this locality:Eightmile Park


5 mi northwest of Canon City (also known as the Royal Gorge district), comprises a pegmatite district of about 10 square mi in T. 18 S., R. 71 W. It is easily reached via U.S. Highway 50 and the Royal Gorge Road from Canon City. ("Minerals of Colorado, updated & revised", p. 15, by Eckel, Edwin B., 1997). Type locality for natromontebrasite, formerly known as fremontite, after the county.


Mineral List


29 valid minerals.

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

Cretaceous - Jurassic
66 - 201.3 Ma



ID: 2733131
Dakota Group and Morrison And Ralston Creek Fms at mountain front between Boulder and Colorado Springs. Dakota, Purgatoire, Morrison, and Ralston Creek Fms in Canon City area

Age: Mesozoic (66 - 201.3 Ma)

Stratigraphic Name: Dakota Group; Morrison Formation; Ralston Creek Formation; Purgatoire Formation

Lithology: Major:{sandstone,shale,mudstone}, Minor:{claystone}

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]

Triassic
201.3 - 252.17 Ma



ID: 3191821
Mesozoic sedimentary rocks

Age: Triassic (201.3 - 252.17 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



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