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United Verde Extension Mine (Little Daisy group of claims; Little Daisy shaft; The UVX; The U.V.X. property; Edith and Audrey shafts), Jerome, Verde District, Black Hills (Black Hill Range), Yavapai Co., Arizona, USA

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Latitude & Longitude (WGS84): 34° 45' 12'' North , 112° 6' 43'' West
Latitude & Longitude (decimal): 34.75333,-112.11195
Köppen climate type:BSk : Cold semi-arid (steppe) climate


A former underground Cu-Ag-Au-Zn mine located in the NW¼ sec. 23, T.16N., R.2E. (Clarkdale 7.5 minute topo map). Discovered by J.J. Fisher in 1900. This property consists of a group of 4 claims and lies to the east of the United Verde Mine. Owned by the United Verde Extension Mining Co., more commonly known simply as "U.V.X." Later owned by the Mingus Mountain Mining Corp. Produced 1900-1974.

Mineralization is a deposit with an elliptical ore body hosted in the Deception Rhyolite, Grapevine Gulch Formation. Partly leached ore occurs on the 800-foot level; a chalcocite body 5 feet wide on the 1,200 level, 500 feet South of the Edith shaft. A main orebody of chalcocite was found on the 1400 level, 900 feet South of the Edith shaft. This body was 269 feet wide and 440 feet long on this level. This orebody is almost entirely in a rock described as "quartz porphyry." Strong kaolinization was found at the edges of the orebody. Diorite is seen only in a small are on the 1200 level. The predominant rock is a greenstone schist, very similar to other parts of the district. The schistosity is well defined but the rock is not fissile. The "quartz porphyry" is undoubtedly intruded into the greenstone. Ore control was stratigraphy and igneous activity. Ore concentration was hydrothermal with oxidation at near surface. Alteration was chloritization, sericitization, kaolinization, and pyritization.

Area structures include foliation in metavolcanic rocks that trends N10W to N40W. Massive sulphide lenses elongated parallel to bedding occur in the metavolcanic rocks.

Workings include the Edith shaft, the Audrey shaft, and the Little Daisy shaft. The Edith and the Audrey collars are both at 4,908 feet of altitude. The Little Daisy shaft was sunk to 800 feet deep to reach the Precambrian rocks. A winze went below the 800-foot level, where partly leached ore was encountered. The Edith shaft was deepened to 1,400 feet. The principal levels of the Edith and Audrey shafts are at depths of 800, 1200, 1300, 1400, 1500, 1600, and 1700 feet below the collar of the Little Daisy shaft. A 12,000-foot long drainage tunnel was driven as well. It drains the mine at the 1300 level or 1100 feet below the collar. The total length of workings amounts to more than 10 miles. The square-set method of mining was employed in the heavy ground; the Mitchell method elsewhere.

Production included $600,000 of ore from the 1200 level orebody (period values). During 1917 the main orebody produced 6,991,480 pounds of copper, worth $2,167,358 (period values). During 1916 U.V.X. produced 36,402,972 pounds of copper from 77,461 tons of ore averaging 23.5% Cu, besides 2,570 oz. Au and 128,468 oz. Ag. Total tonnage was 3,878,825 dry tons of ore yielding 793,331,100 pounds of Cu, 6,449,156 oz. Ag, and 152,756 oz. Au. The total output being worth $9,949,918 (period values), of which $7,400,000 was profit!

Mineral List


19 valid minerals.

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

Miocene
5.333 - 23.03 Ma



ID: 2644140
Trachyandesite of Hickey Formation

Age: Miocene (5.333 - 23.03 Ma)

Description: Flows at base of Hickey Formation, west of Prescott at Thumb Butte; west and south of town of Chino Valley; along Verde fault in Jerome area; and south of Mayer. At Thumb Butte, trachyandesite is potassic to very potassic and average in Fe/Mg ratio. At Prescott, one flow is a latitic basalt that is very potassic and very Mg rich. Flows west and southeast of town of Chino Valley are trachybasalt that is average in its K/Na ratio and Mg rich. Along Verde fault, basal flows range in composition from trachybasalt and lati-basalt to basanite and alkali basalt. These rocks have K/Na and Fe/Mg ratios similar to those of basal alkali basalts on top of Black Hills. South of Mayer, an eroded cone is trachyandesite that is sodic and average in Fe/Mg ratio. A K-Ar date on hornblende of about 19 Ma has been cited as evidence that the cone may be related to the Sullivan Buttes volcanic field. Trachyandesite composition suggests that cone may be age of basalt of Hickey Forma­tion in area. Age at Thumb Butte about 15 Ma (Nichols Boyd, 2001)

Reference: DeWitt, E., V. Langenheim, E. Force, R.K. Vance, P.A. Lindberg, R.L. Driscoll. Geologic map of the Prescott National Forest and the headwaters of the Verde River, Yavapai and Coconino Counties, Arizona. Scientific Investigations Map SIM-2996. [99]

Tortonian - Burdigalian
7.246 - 20.44 Ma



ID: 2766699
Late to middle Miocene basaltic rocks

Age: Miocene (7.246 - 20.44 Ma)

Stratigraphic Name: Hickey Formation

Description: Mostly dark, mesa-forming basalt deposited as lava flows. Rocks of this unit are widely exposed south of Camp Verde (Hickey Formation basalts), in the Mohon Mountains north of Bagdad, "The Mesa" east of Parker, and at other scattered locations in western Arizona. Rocks of this unit were not tilted by middle-Tertiary normal faulting except in a narrow belt from north of Phoenix to the northwest corner of the state. (8-16 Ma)

Comments: Hickey Formation, Mohon volcanic field, others

Lithology: Major:{basalt}

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



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

Weed, W.H. (1918) The Mines Handbook, Vol. XIII: 415-417.

Yavapai Magazine (1918) February, 1918: 4-6.

Lindgren, W. (1926) Ore deposits of the Jerome and Bradshaw Mountains quadrangles, Arizona. USGS Bulletin 782: 27, 30, 79-88.

Butler, B.S. and Wilson, E.D. (1938) Some Arizona Ore Deposits, Clifton-Morenci District. Arizona Bureau of Mines Bulletin 145: 50.

Schwartz, G.M. (1938) Oxidized copper ores of the United Verde Extension Mine. Economic Geology: 33: 21-33.

Galbraith, F.W. (1947) Minerals of Arizona. Arizona Bureau of Mines Bulletin 153: 9, 16, 31.

Anderson, C.A. and Creasy, S.C. (1958) Geology and ore deposits of the Jerome area, Yavapai Co., AZ. USGS PP 308: 91, 94, 135-149.

Niemuth, N.J. (1987) Arizona Mineral Development 1984-1986. Arizona Department of Mines & Mineral Resources Directory 29, 46 pp.

Blair, Gerry (1992) The Rockhound's Guide to Arizona. Helena, MT, Falcon Press.

Niemuth, N.J. and Phillips, K.A. (1992) Copper Oxide Resources. Arizona Department of Mines & Mineral Resources Open File Report 92-10: 18 (Table 1).

Sawyer, M.B., Gurmendi, A.C., Daley, M.R., and Howell, S.B. (1992) Principal Deposits of Strategic and Critical Minerals in Arizona. U.S. Bureau of Mines Special Publication, 334 pp.

Anthony, J.W., et al (1995) Mineralogy of Arizona, 3rd.ed.: 118, 121, 126, 186, 191, 197.

USGS Clarkdale Quadrangle map.

MRDS database Dep. ID #10102464, MRDS ID #M002668; and, Dep. ID #10137527, MAS ID #0040250684; and, Dep. ID #10137564, MAS ID #0040250018; and, Dep. ID #10137720, MAS ID #0040251294.

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