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Stroud Brothers Mine, Dragoon, Gunnison Hills, Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA

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Latitude & Longitude (WGS84): 32° 3' 47'' North , 110° 0' 8'' West
Latitude & Longitude (decimal): 32.06333,-110.00250
GeoHash:G#: 9t9y2ufw7
Locality type:Mine
Köppen climate type:BSk : Cold semi-arid (steppe) climate

A former surface and underground Pb-Ag-Cu occurrence/mine located in North-central sec. 9, T16S, R23E, 4.5 miles SE of Johnson, on private land. Owned by the Stroud Brothers (Arizona Cleveland Mining Co.). Discovered and first produced in 1911.

Mineralization is hosted in Escabrosa Limestone and is comprised of oxidized lead and copper sulfides along shear zones in the Paleozoic limestone trending NE mineralized by replacement. The ore body is tabular. Cliff-forming limestone and dolomite. Metal ratios and grade same as those for the Texas-Arizona Mine.

Local structures include Tertiary block faulting trending NNW. Regionally, Late Cretaceous or Early Tertiary N- to NW-trending folds and thrust aults override to the NE.

Workings include surface and underground openings comprised of a pit and one short adit opening.

A few tons of picked, high-grade ore were produced in 1911.

Regions containing this locality

Sonoran Desert, North America

Desert - 1,138 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

6 valid minerals.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Group 5 - Nitrates and Carbonates
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Group 9 - Silicates
Unclassified Minerals, Rocks, etc.

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [4] coordination
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Unclassified Minerals, Rocks, etc.

List of minerals for each chemical element

H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H Limonite(Fe,O,OH,H2O)
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C CalciteCaCO3
O AnglesitePbSO4
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O CalciteCaCO3
O HematiteFe2O3
O Limonite(Fe,O,OH,H2O)
O QuartzSiO2
O WillemiteZn2SiO4
Si QuartzSiO2
Si WillemiteZn2SiO4
S AnglesitePbSO4
Ca CalciteCaCO3
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn WillemiteZn2SiO4
Pb AnglesitePbSO4

Regional Geology

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

Quaternary - Miocene
0 - 23.03 Ma

ID: 3185380
Cenozoic sedimentary rocks

Age: Cenozoic (0 - 23.03 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. [154]

Olenekian - Ediacaran
247.2 - 635 Ma

ID: 2751796
Paleozoic sedimentary rocks

Age: Neoproterozoic to Triassic (247.2 - 635 Ma)

Description: Undivided Paleozoic limestone, dolostone, quartzite, shale, and related sedimentary rocks. (248-544 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.

Lithology: Major:{limestone,dolostone,quartzite}, Minor:{shale}

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. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Cooper, J.R. & L.T. Silver (1964), Geology and Ore Deposits of the Dragoon Quadrangle, Cochise County, Arizona, USGS PP 416.
Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geol. Sur. Branch Bull. 187, Index of Mining Properties in Cochise County, Arizona: 59 (Table 4).
MRDS database Dep. ID file #10039516, MRDS ID #M050203; and, Dep. ID #10112492, MAS ID #0040030219.

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