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Copper Glance Mine (Thumb Butte Mine; Montezuma Mine), Red Bluff Mountain, Yuma County, Arizona, USAi
Regional Level Types
Copper Glance Mine (Thumb Butte Mine; Montezuma Mine)Mine
Red Bluff MountainMountain
Yuma CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
32° 58' 24'' North , 114° 9' 7'' West
Latitude & Longitude (decimal):
32.97333,-114.15194
GRN:
N22W69
Type:
Mine
Köppen climate type:
BWh : Hot deserts climate
Nearest Settlements:
PlacePopulationDistance
Wellton2,936 (2017)33.4km
Tacna602 (2011)35.8km
Buckshot153 (2017)40.3km
Fortuna Foothills26,265 (2011)42.7km
El Prado Estates504 (2017)45.5km
Mindat Locality ID:
33407
Long-form identifier:
mindat:1:2:33407:0
GUID (UUID V4):
0


A former surface and underground Cu-Ag-Au-Pb-Zn mine located in the SE¼ sec. 19, T5S, R18W (protracted), on federal land. Owned/operated at times, or in part, by Messrs. Miller & Minear; the Thumb Butte Copper Co., Crowder, Gifford & Ferguson, Sturgess, and the Castle Dome Exploration & Development Co.

Mineralization is spotty chalcocite, partly altered to copper carbonates, with minor lead and zinc ores, in irregular calcite-quartz veins cutting Mesozoic shale, limestone and arkose and some green chlorite schists, possibly from altered andesitic volcanics. North-South mineralized zone about 20 feet wide. The original outcrop was said to contain very high grade silver values.

Workings included shallow shafts and open cuts worked sporadically in the 1880's and from 1918 to 1930 and in 1956 and 1966. Some 135 tons of ore averaging about 7% Cu, 11 oz. Ag/T & 0.1 oz Au/T plus 0.2% Pb were produced.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
SSulfur
Sⓘ ChalcociteCu2S
CaCalcium
Caⓘ CalciteCaCO3
CuCopper
Cuⓘ ChalcociteCu2S

Other Databases

Link to USGS MRDS:10113575

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

The History of Arizona, 2nd. state legislature, Chap. X: 68.
MRDS database Dep. ID file #10113575, MAS ID #0040270166; and, Dep. ID #10259251, MAS ID #0040270880.
Wilson, Eldred D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. University of Arizona Bulletin 134. Arizona Bureau of Minespages 84, 89 & 90
Keith, Stanton B. (1978) Index of Mining Properties in Yuma County, Arizona. University of Arizona Bulletin 192. Bureau of Geology and Mineral Technology 189pp.
(n.d.) ADMMR Mines Database, Arizona Geological Survey.
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