New Girl Prospect, Left Hand Creek District, Boulder Co., Colorado, USA
|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 ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
5 valid minerals.
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
|Lykins Fm and Lyons Sandstone|
Age: Phanerozoic (247.2 - 298.9 Ma)
Stratigraphic Name: Lykins Formation; Lyons 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. 
252.17 - 298.9 Ma
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.