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New Girl Prospect, Left Hand Creek District, Boulder Co., Colorado, USA

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Latitude & Longitude (WGS84): 40° 8' 21'' North , 105° 18' 41'' West
Latitude & Longitude (decimal): 40.13917,-105.31139
Köppen climate type:BSk : Cold semi-arid (steppe) climate


Commodities (Major) - Tantalum, Beryllium, Niobium (Columbium)
Development Status: Occurrence


Commodity List

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


Mineral List


5 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

Early Triassic - Permian
247.2 - 298.9 Ma



ID: 2753192
Lykins Fm and Lyons Sandstone

Age: Phanerozoic (247.2 - 298.9 Ma)

Stratigraphic Name: Lykins Formation; Lyons Sandstone

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

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]

Permian
252.17 - 298.9 Ma



ID: 2213738
Lyons Sandstone

Age: Permian (252.17 - 298.9 Ma)

Description: Moderate-orange, pink to pinkish-gray, fine- to medium-grained, firmly cemented, well-sorted, cross-stratified, quartzose sandstone; about 77 m thick in Boulder area, 108 m in Lyons quadrangle, but only 6 m thick northwest of Ft. Collins; at Greeley it i

Reference: Colton, Roger B. Geologic Map of the Boulder-Fort Collins-Greeley area, Colorado . U.S. Geological Survey Geologic Investigations Series I-855-G. [37]

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



This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
REF:USGS MR-36, 196
HANLEY AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942 - 44, U. S. G. S. PROF. PAPER 227

 
Mineral and/or Locality  
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