Atlantic Mine, Bonanza District (Kerber Creek District), Saguache Co., Colorado, USAi
|Regional Level Types|
|Bonanza District (Kerber Creek District)||Mining District|
Commodities (Major) - Copper, Silver, Gold
Development Status: Past Producer
Host Rock Unit: Bonanza Tuff, Rawley Andesite
Structure: Bonanza Caldera, Sawatch Range, San Juan Volcanic Field, Rio Grande Rift
Host Rock: Andesite
Tectonic Structure: Central Cordillera (Southern Rocky Mtns.)
Regions containing this locality
|North America Plate||Tectonic Plate|
|Rocky Mountains, North America||Mountain Range|
Select Mineral List TypeStandard Detailed Strunz Dana Chemical Elements
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded at this locality.
No minerals currently recorded for this locality.
List of minerals for each chemical element
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
|Miocene - Eocene|
5.333 - 56 Ma
|Cenozoic volcanic rocks|
Age: Cenozoic (5.333 - 56 Ma)
Stratigraphic Name: San Juan Mountains
Comments: Southern Rocky Mountains
Lithology: Intermediate-felsic volcanic 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. 
|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
Comments: Original map source: Green, G.N., 1992, The Digital Geologic Map of Colorado in ARC/INFO Format: U.S. Geological Survey Open-File Report 92-0507, 9 p., scale 1:500,000.
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.