Spielman prospect (Spielman pegmatite), Devils Head Pegmatite District, Douglas Co., Colorado, USA
|Latitude & Longitude (WGS84):||39° 9' 32'' North , 105° 2' 25'' West|
|Latitude & Longitude (decimal):||39.15915,-105.04051|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
Ref.: Meeves, H., et al (1966), Reconnaissance of beryllium-bearing pegmatite deposits in six western states, US Bur. Mines Info. Circ. 8298: 25 (Table A-1).
A prospect located in SW¼ SE sec. 19, T.10S., R.68W.
Mineralization is an unzoned pegmatite 200 feet long and up to 50 feet wide in granite.
Workings include prospect pits.
2 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
1000 - 1600 Ma
|Rocks of Pikes Peak Batholith (1000-m.y. age group)|
Age: Mesoproterozoic (1000 - 1600 Ma)
Description: Includes Pikes Peak, Mount Rosa, Windy Point, and Redskin Granites and unnamed rocks
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.