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Metcalf Mines (Arizona Copper Co. group; Metcalf Open pit), Clifton, Copper Mountain District (Clifton-Morenci District), Shannon Mts, Greenlee Co., Arizona, USAi
Regional Level Types
Metcalf Mines (Arizona Copper Co. group; Metcalf Open pit)Group of Mines
Clifton- not defined -
Copper Mountain District (Clifton-Morenci District)Mining District
Shannon MtsMountain Range
Greenlee Co.County
ArizonaState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84): 33° 6' 48'' North , 109° 21' 38'' West
Latitude & Longitude (decimal): 33.11333,-109.36056
GeoHash:G#: 9tfhrkn54
USGS MRDS Record:10048292
Locality type:Group of Mines
Köppen climate type:Csb : Warm-summer Mediterranean climate
Nearest Settlements:
PlacePopulationDistance
Morenci1,489 (2011)3.9km
Clifton3,685 (2017)9.2km
York557 (2011)28.5km
San Jose506 (2011)39.1km
Solomon426 (2011)42.0km


A former surface and underground Cu-Ag-Au-Mo-Zn mine located in the center SE¼ sec. 4 and the SW¼ sec. 3, T4S, R29E (Clifton 15 minute topo map), located on the east side of the confluence of Chase Creek and King Gulch, at the old town site of Metcalf, about 6 miles from Clifton and 2.5 miles NW of Morenci, on private land. Discovered by Robert and James Metcalf in 1870. The principal claim is the Little Annie.
Produced 1882-1979. Past owners and operators included the Metcalf Brothers; Leszynsky Brothers; and the Arizona Copper Co. Ltd. (1882-1922). Owned and operated by the Phelps Dodge Corp., Morenci Branch, since 1922.

Mineralization is an irregular ore body. Associated rock units are the Morenci Granite Porphyry and the Precambrian granite-granodiorite complex. Ores occur as irregular bodies in porphyry, as replacement deposits of narrower porphyry dikes, as distinct NE-trending fisure veins, and as contact breccia between granite porphyry and quartz monzonite porphyry. Ore concentration involved extensive leaching (leached capping ranges in thickness from 200 to 1000 feet. Supergene enrichment of chalcocite; ores have generally been deposited by replacement in the porphyry mass. Alteration is surface oxidation to depths of 30 feet and sericitization of granite porphyry. Chalcotrichite occurs as a product of surface oxidation; chalcanthite occurs as efflorescences.

Metcalf Mines comprise 3 separate ore bodies: (ore body on Metcalf Ridge consists of supergene ore in granite porphyry; on King Ridge, porphyry and Precambrian granite are cut by NE-striking veins and breccias; underground mine on King Ridge opens a breccia pipe located along the contact of granite porphyry and quartz monzonite porphyry). Mining operations have caused blending of ores from these separate ore bodies. High grade ore zones are aligned along a N-S strike but most veins and dikes generally strike N40E.

The NW-striking Shannon Fault marks the NE edge of the ore body which was downthrown about 500 feet to the SW. Leached capping dips to the SW and vaguely parallels the topography. Native copper is found in open cuts as large irregular masses intergrown with cuprite. Cuprite also occurs as irregular veinlets in sericitized porphyry. The King breccia pipe has a N-S elliptical shape and is cut by steeply-dipping, N-S-trending fissure veins.

Area structures include irregular bodies of chalcocite ore contained in soft and sericitic granite porphyry near contact with sedimentary rocks. The porphyry contains inclusions of shale and metamorphosed limestone. General NW-striking step faults with normal displacements to the south.

Tectonic component is the Shannon Mountain Fault Block.

Workings included a small open pit on Metcalf Ridge; a large open pit on King Ridge; and an underground mine on the SE flank of King Ridge (referred to as the King breccia pipe). Surface workings and several shafts were developed on Metcalf Ridge and King Ridge, overlooking the confluence of King Gulch and Chase Creek. Primarily open cast mining and tunnelling on 4 levels; an incline connecting surface cuts with the Coronado Trail; the second level at about 70 feet below the surface opens the main body of porphyry. The Metcalf property was mined by underground and surface cut operations until 1920. The property remained idle until the Phelps Dodge Corporation developed the open pit and underground operations on the old workings in 1969.

The open pit mine has produced from 1975 to the present. Production data for the years 1975 through 1979 listed under the Metcalf open pit. Production data prior to 1921 is included in Longfellow Metcalf Mine data. Longfellow Metcalf also includes the other Arizona Copper Co. mines of Detroit, Longfellow, Humboldt, Coronado, Joy, Mammoth and Yavapai Mines.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


15 valid minerals.

Detailed Mineral List:

Azurite
Formula: Cu3(CO3)2(OH)2
Reference: FM-TGMS-MSA Symposium of Azurite and Other Copper Carbonates, Abstracts: Azurite and Malachite from the Morenci and Metcalf Mines, Greenlee County, Arizona. Mineralogical Record 22:66-67
Brochantite
Formula: Cu4(SO4)(OH)6
Reference: Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 25; Dana 7:II:578,1094.
Chalcanthite
Formula: CuSO4 · 5H2O
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Chalcocite
Formula: Cu2S
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Copper
Formula: Cu
Reference: MRDS database Dep. ID #10048292.
Covellite
Formula: CuS
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Cuprite
Formula: Cu2O
Reference: Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 33.
Cuprite var: Chalcotrichite
Formula: Cu2O
Reference: MRDS database Dep. ID #10048292.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Molybdenite
Formula: MoS2
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Pyrite
Formula: FeS2
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Quartz
Formula: SiO2
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Quartz var: Chalcedony
Formula: SiO2
Reference: MRDS database Dep. ID #10048292, MRDS D #M800422.
Spangolite
Formula: Cu6Al(SO4)(OH)12Cl · 3H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 376; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 65; Dana 7:II:578,1094.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Covellite2.CA.05aCuS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
var: Chalcotrichite4.AA.10Cu2O
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Brochantite7.BB.25Cu4(SO4)(OH)6
Chalcanthite7.CB.20CuSO4 · 5H2O
Spangolite7.DD.15Cu6Al(SO4)(OH)12Cl · 3H2O
Group 9 - Silicates
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Chalcanthite29.6.7.1CuSO4 · 5H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Brochantite30.1.3.1Cu4(SO4)(OH)6
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq·xH2O, where m:p > 6:1
Spangolite31.1.5.1Cu6Al(SO4)(OH)12Cl · 3H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Cuprite
var: Chalcotrichite
-Cu2O
'Garnet Group'-X3Z2(SiO4)3
Kaolinite-Al2(Si2O5)(OH)4
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Quartz
var: Chalcedony
-SiO2

List of minerals for each chemical element

HHydrogen
H BrochantiteCu4(SO4)(OH)6
H SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
H AzuriteCu3(CO3)2(OH)2
H ChalcanthiteCuSO4 · 5H2O
H MalachiteCu2(CO3)(OH)2
H KaoliniteAl2(Si2O5)(OH)4
H Limonite(Fe,O,OH,H2O)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C AzuriteCu3(CO3)2(OH)2
C MalachiteCu2(CO3)(OH)2
OOxygen
O BrochantiteCu4(SO4)(OH)6
O SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
O AzuriteCu3(CO3)2(OH)2
O CupriteCu2O
O ChalcanthiteCuSO4 · 5H2O
O MalachiteCu2(CO3)(OH)2
O Quartz (var: Chalcedony)SiO2
O Garnet GroupX3Z2(SiO4)3
O KaoliniteAl2(Si2O5)(OH)4
O Limonite(Fe,O,OH,H2O)
O MagnetiteFe2+Fe23+O4
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Cuprite (var: Chalcotrichite)Cu2O
O QuartzSiO2
O MuscoviteKAl2(AlSi3O10)(OH)2
AlAluminium
Al SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
Al KaoliniteAl2(Si2O5)(OH)4
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Quartz (var: Chalcedony)SiO2
Si Garnet GroupX3Z2(SiO4)3
Si KaoliniteAl2(Si2O5)(OH)4
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S BrochantiteCu4(SO4)(OH)6
S SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
S ChalcanthiteCuSO4 · 5H2O
S ChalcociteCu2S
S CovelliteCuS
S MolybdeniteMoS2
S PyriteFeS2
ClChlorine
Cl SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
FeIron
Fe PyriteFeS2
Fe Limonite(Fe,O,OH,H2O)
Fe MagnetiteFe2+Fe23+O4
CuCopper
Cu BrochantiteCu4(SO4)(OH)6
Cu SpangoliteCu6Al(SO4)(OH)12Cl · 3H2O
Cu AzuriteCu3(CO3)2(OH)2
Cu CupriteCu2O
Cu ChalcanthiteCuSO4 · 5H2O
Cu ChalcociteCu2S
Cu CovelliteCuS
Cu MalachiteCu2(CO3)(OH)2
Cu Cuprite (var: Chalcotrichite)Cu2O
Cu CopperCu
MoMolybdenum
Mo MolybdeniteMoS2

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

Pliocene
2.588 - 5.333 Ma



ID: 3192320
Cenozoic volcanic rocks

Age: Pliocene (2.588 - 5.333 Ma)

Lithology: Volcanic 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]

Serpukhovian - Early Cambrian
323.2 - 541 Ma



ID: 2847891
Mississippian, Devonian, and Cambrian sedimentary rocks

Age: Paleozoic (323.2 - 541 Ma)

Stratigraphic Name: Tapeats Sandstone; Bright Angel Shale; Muav Limestone; Temple Butte Formation; Redwall Limestone; Bolsa Quartzite; Abrigo Formation; Martin Formation; Escabrosa Limestone

Description: Brown to dark gray sandstone grades upward into green and gray shale, overlain by light to medium gray or tan limestone and dolostone. This unit includes the Tapeats Sandstone, Bright Angel Shale, Muav Limestone, Temple Butte Formation and Redwall Limestone in northern Arizona, and the Bolsa Quartzite, Abrigo Formation, Martin Formation, and Escabrosa Limestone in southern Arizona. These rocks record intermittent sea-level rise and inundation in early Paleozoic time. (330-540 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:{sandstone,shale,limestone}, Minor:{dolostone,quartzite}

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Stevens, J.H. (1904) The Copper Handbook, Vol. IV: 193-195.
Lindgren W. (1905) The Copper Deposits of the Clifton-Morenci District, Arizona. USGS Professional Paper 43: 320-323.
University of Arizona Bull. 41 (1916-17), Mineralogy of Useful Minerals in Arizona: 25, 33.
Weed, W.H. (1918) The Mines Handbook, Vol. XIII: 470-472, Arizona Copper Co. Ltd.
Tenny, J.B. (1927-1929) History of Mining in Arizona, Special Collection, University of Arizona Library & Arizona Bureau of Mines Library: Vol. 1: 97-98.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 578, 1094.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 65.
Langton, J.M. (1973), Ore Genesis in the Morenci-Metcalf District, A.I.M.E. Transactions: 254: 256.
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, AZ Dept. Mines & Min. Resources Open File Rept. 92-10: 8 (Table 1).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 376.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology file data.
U.S. Bureau of Land Management Mining District Sheet #840.
U.S. Bureau of Mines files, Metcalf Mines.
USGS Clifton Quadrangle map.
MRDS database Dep. ID #10048292, MRDS ID #M800422; and Dep. ID. #10186644, MAS ID #0040110136.


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