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Childs-Adwinkle Mine (Childs and Altwilkle Mine; Childs-Aldwinkle Mine), Copper Creek, Copper Creek (Copper Creek Canyon), Bunker Hill District (Copper Creek District), Galiuro Mts, Pinal Co., Arizona, USA

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Latitude & Longitude (WGS84): 32° 45' 2'' North , 110° 28' 59'' West
Latitude & Longitude (decimal): 32.75056,-110.48306
Other regions containing this locality:Sonoran Desert, North America
Köppen climate type:BSk : Cold semi-arid (steppe) climate


A Mo-Cu-Ag-Au-Pb-Zn-As-Sb-Bi mine located in the W½ sec. 11, T8S, R18E (Oak Grove Canyon 7.5 minute topo map), 3½ miles N of Sombrero Butte, just N of Copper Creek in the Copper Creek Canyon, and 11 miles E of the town of Mammoth. Discovered in 1883 by Aldwinkle and grubstaked by Childs. Owned by the Arizona Molybdenum Corp. (1933-1938). Also known as / designated: The Calumet and Arizona Mining Co. property; Arizona Molybdenum Corp. property; Table Mountain Copper Co. property; Patented claims MS 3263; Minnesota-Arizona Copper Co. property; and the Copper Creek project (in part).

The orebodies are breccia pipes. There are two ore bodies. The south ore body is 220 X 100 feet, the Alamo ore body is 270 X 150 feet. The breccia pipes probably join at 700 feet and pinch out at 800 feet. The ore minerals are confined to the cementing material where they occur as disseminations and lining of fractures. The ore body is funnel-shaped and tapering downward. Ore control was a breccia pipe at fault and fracture intersections. Alteration was sericitic, chloritic, tourmaline, silicification and oxidation to iron oxides in the outcrop. Associated rock unit is the Copper Creek granodiorite, a porphyritic biotite granodiorite. Bornite, tennantite were important at depth. Molybdenite was confined to open spaces. The bulk of the chalcopyrite is interstitial to breccia fragments. Molybdenite, the latest sulfide, is later than many gangue minerals. The breccia pipe may have a zoned sulfide mineralogy. The Au, Ag, As, Sb, and Bi were derived from treatment of the copper concentrates.

Area structures include Tertiary block faulting trending NNW and the breccia pipe in strong E-W vertical faults and fractures with N60°E and N70°W strikes.

Two ore bodies were developed, the South and Alamo bodies. Workings included 2 adits, 5 levels below the haulage level, a 2-compartment winze, and 2 large glory holes on surface. Workings were to the 850 level (1938). Most workings are now inaccessible. Production was 6,454,321 pounds of MoS (1933-July, 1938), 5,519,140 pounds of Cu, 19,167 oz. Ag, and 4730 oz. Au.

Assay data: Mo grade 0.4-0.75%, Cu grade 3-4%. Molybdenite nearly constant at 1-2%. Cu content increased from 1% at surface to 6-8% at the 800 feet, then decreased to 2% at the bottom of the mine.

Mineral List

Mineral list contains entries from the region specified including sub-localities

40 valid minerals. 1 (TL) - type locality of valid minerals.

Geochronology

Mineralization age: Paleocene : 61 Ma to 60.4 Ma

Important note: This table is based only on rock and mineral ages recorded below and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Paleocene
ⓘ Molybdenite (youngest age)60.4 Ma
ⓘ Molybdenite (oldest age)61 Ma

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

Ypresian - Campanian
47.8 - 83.6 Ma



ID: 2772548
Early Tertiary to Late Cretaceous granitic rocks

Age: Phanerozoic (47.8 - 83.6 Ma)

Description: Porphyritic to equigranular granite to diorite emplaced during the Laramide orogeny. Larger plutons are characteristically medium-grained, biotite +/- hornblende granodiorite to granite. Smaller, shallow-level intrusions are typically porphyritic. Most of the large copper deposits in Arizona are associated with porphyritic granitic rocks of this unit, and are thus named 'porphyry copper deposits'. (50-82 Ma)

Comments: Laramide metaluminous; associated with porphyry Cu deposits

Lithology: Major:{granite,granodiorite,diorite}

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


Localities in this Region

USA
  • Arizona
    • Pinal Co.
      • Galiuro Mts
        • Bunker Hill District (Copper Creek District)
          • Copper Creek (Copper Creek Canyon)
            • Copper Creek
              • Childs-Adwinkle Mine (Childs and Altwilkle Mine; Childs-Aldwinkle Mine)

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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kuhn, T.H. (1938) Some Arizona Ore Deposits. Arizona Bureau of Mines Bull. 145: 127-130.
Kuhn, Truman H. (1941), Pipe deposits of the Copper Creek area, Arizona, Economic Geology: 36: 512-538.
Denton, T.C. (1947a), Old Reliable Copper Mine, Pinal County, Arizona, US Bureau of Mines Report of Investigation 4006.
Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 16, 17, 19, 23, 24, 27, 28.
Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158: 57.
Fleischer, M. (1959), The geochemistry of rhenium, with special reference to its occurrence in molybdenite, Economic Geology: 54: 1406-1413.
Galbraith, F.W. & Brennan (1959), Minerals of Arizona: 72, 82.
Mining World (1962) DMBD Makes Success of 60-ton a Day Copper-Moly Operation in Arizona.
Simons, F.S. (1964), Geology of the Klondyke quadrangle, Graham and Pinal Counties, Arizona, USGS PP 461: 155.
Anderson, C.A. (1969), Copper, in Mineral and water resources of Arizona, Arizona Bureau of Mines Bull. 180: 117-156.
Guthrie, J.O., and Moore, D.G. (1978) The geology of the Copper Creek area, Bunker Hill mining district, Galiuro Mountains, Arizona, in Jenney, J.P., and Hauck, H.R., eds., Proceedings of the Porphyry Copper Symposium, Tucson, Ariz., March 18-20, 1976: Arizona Geological Society Digest: 11: 25-31.
Hicks, Clifford J. (1979) Molybdenum Occurrences in Arizona, Arizona Department of Mineral Resources: 21.
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 14 (Table 1).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 117, 126, 142, 152, 164, 167, 196, 213, 221, 278, 302, 318, 341, 359, 390, 393, 401.
Shannon, David (1996) Orthoserpierite from the Copper Creek District, Pinal County, Arizona. Mineralogical Record: 27: 189-190.
Grant, Raymond W., Bideaux, R.A., and Williams, S.A. (2006) Minerals Added to the Arizona List 1995-2005: 7.
Arizona Bureau of Mines file data.
USGS Oak Grove Canyon Quadrangle map.
U.S. Bureau of Mines War Minerals Report #275: 3.
U.S. Bureau of Land Management Mining District Sheet 741.
Arizona Department of Mineral Resources Magma Chief Mine file.
Arizona Department of Mineral Resources Burney mill file.
MRDS database Dep. ID #10039463, MRDS ID #M050120; and Dep. ID #10113884, MAS ID #0040210232.

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