Eureka Mine (Azurite Mine; Tenorite Mine; Connelite Mine; Lotus Mine), Hartford District (Huachuca Mountains District), Huachuca Mts, Cochise Co., Arizona, USAi
|Regional Level Types|
|Eureka Mine (Azurite Mine; Tenorite Mine; Connelite Mine; Lotus Mine)||Mine|
|Hartford District (Huachuca Mountains District)||Mining District|
|Huachuca Mts||Mountain Range|
|Latitude & Longitude (WGS84):||31° 25' 44'' North , 110° 22' 46'' West|
|Latitude & Longitude (decimal):||31.42889,-110.37944|
|USGS MRDS Record:||10027032|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
‡Ref.: Alexis, C.O. (1949), The Geology of the Northern Part of the Huachuca Mountains, Arizona, University of Arizona, PhD. Thesis: 65-66.
Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158: 37.
Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 187, Index of Mining Properties in Cochise County, Arizona: 65 (Table 4).
Ludington, S. (1984) Preliminary mineral-resource assessment of the proposed Miller Peak Wilderness, Cochise County, Arizona: U.S. Geological Survey Open-File Report 84-0293, 10 p.
Tuftin, S.E. and Armstrong, R.C. (1994) U.S. Bureau of Mines Open File Report Mineral Land Assessment (MLA) 1-94.
Arizona Bureau of Mines Bull. 140: 91.
MRDS database Dep. ID fle #10027032, MRDS ID #M001757; and, Dep. ID #10112391, MAS ID #0040030135.
A former small Pb-Ag-Cu-Au mine located in the SE ¼ sec. 14, T.23S., R.19E. Locality unsurveyed. Located about 1 mile SW of the southern boundary of the Fort Huachuca military reservation. Closed 1951. First produced 1900. Operated by Mr. L. D. Carlisle (1951).
Mineralization is spotty sulfides, alrgely oxidized, in quartz veins in shale and sandstone of the steeply tilted Cretaceous Bisbee Group Morita Formation cut by Tertiary dikes or sills.
Workings include tunnels. A small production of ore was made in the early 1900's and in 1951.
Regions containing this locality
Desert - 1,138 mineral species & varietal names listed
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
66 - 145 Ma
|Mesozoic sedimentary rocks|
Age: Cretaceous (66 - 145 Ma)
Lithology: Sedimentary 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. 
|Campanian - Oxfordian|
72.1 - 163.5 Ma
|Cretaceous to Late Jurassic sedimentary rocks with minor volcanic rocks|
Age: Mesozoic (72.1 - 163.5 Ma)
Stratigraphic Name: Temporal Formation; Bathtub Formation; Sand Wells Formation; Fort Crittenden Formation; McCoy Mountains Formation
Description: Sandstone and conglomerate, rarely forms prominent outcrops; massive conglomerate is typical near base of unit and locally in upper part. These deposits are nonmarine except in southeastern Arizona, where prominent gray marine limestone (Mural Limestone) forms the middle of the Bisbee Group. Sandstones are typically medium-bedded, drab brown, lithic-feldspathic arenites. Includes Bisbee Group (largely Early Cretaceous) and related rocks, Temporal, Bathtub, and Sand Wells formations, rocks of Gu Achi, McCoy Mountains Formation, and Upper Cretaceous Fort Crittenden Formation and equivalent rocks. (80-160 Ma)
Comments: Original map source: Arizona Geological Survey, DI-8 Geologic Map of Arizona, Digital Spatial data for the Geologic Map of Arizona, v. 3.0, edited by S.M. Richard and S.M. Kneale, 2002, 10 p., 2 DOS HD disks. Arc/INFO export file (.e00) format, scale 1:1,000,000.
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.