Express Mine (Express - Headlight Mine), Bonanza District (Kerber Creek District), Saguache Co., Colorado, USA
|Latitude & Longitude (WGS84):||38° 15' 5'' North , 106° 6' 35'' West|
|Latitude & Longitude (decimal):||38.25139,-106.10973|
|Köppen climate type:||Dfc : Subarctic climate|
REF:Deposit:: PATTON, H.B., 1916, GEOLOGY AND ORE DEPOSITS OF THE BONANZA DISTRICT, SAGUACHE COUNTY, COLORADO: COLORADO GEOL. SURVEY BULL. 9, 136 P.
Deposit:: BURBANK, W.S., 1932, GEOLOGY AND ORE DEPOSITS OF THE BONANZA MINING DISTRICT, COLORADO: USGS PRO
Commodities (Major) - Gold, Silver; (Minor) - Lead, Copper, Zinc; (Trace) - Manganese
Development Status: Occurrence
Host Rock Unit: Intrusive Quartz Latite And Rhyolite, Rawley Andesite
Structure: Bonanza Caldera, Sawatch Range, San Juan Volcanic Field, Rio Grande Rift
Host Rock: Latite, Andesite, Quartz Latite, Porphyry
Tectonic Structure: Central Cordillera (Southern Rocky Mtns.)
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
13 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
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
|Rupelian - Priabonian|
28.1 - 37.8 Ma
|Pre-ash-flow andesitic lavas, breccias, tuffs, and conglomerates|
Age: Paleogene (28.1 - 37.8 Ma)
Description: Includes several named units
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.