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Yavapai Mine (Arizona Copper Co. group [in part]), Clifton, Copper Mountain District (Clifton-Morenci District), Shannon Mts, Greenlee Co., Arizona, USA

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Latitude & Longitude (WGS84): 33° 5' 8'' North , 109° 21' 38'' West
Latitude & Longitude (decimal): 33.08556,-109.36056
GeoHash:G#: 9tfhprn16
Locality type:Mine
Köppen climate type:Csb : Warm-summer Mediterranean climate

A former surface and underground Cu-Zn mine located in the S½NE¼N½SE¼ sec. 16, T4S, R29E, W of the Longfellow Mine, just E of the West Yankie lode, 5½ miles from Clifton (direction ?), on private land. One patented claim overlapped in center by the Montezuma claim of the Detroit Copper Mining Co. This claim occupied a triangular area equal to half a claim. Closed 1932. Past owners included the Arizona Copper Co. Ltd. Owned and operated by the Phelps Dodge Corp., Morenci Branch (As Part Of Morenci Open Pit). Incorporated into the southern half of the Morenci open pit.

Mineralization is an irregular ore body hosted in the Longfellow Limestone. The ore zone is 30.48 meters wide. Disseminated pyrite in sericitized porphyry is either partly or wholly replaced by chalcocite. Limestones contain vertical seams of pyrite. Associated rock unit is the Morenci Granite Porphyry. Ore control is confinement to porphyry dikes that probably originate from the main maps of Copper Mountain Porphyry. Ore concentration is secondary enrichment of porphyry dikes and replacement of pyrite by chalcocite in descending sulfate solutions. Alteration is altered to intergrowths of epidote, garnet, pyroxene, magnetite, pyrite and chalcopyrite. Extensive surface oxidation to depths of 100 feet. The porphyry is greatly altered to sericite and quartz with disseminated pyrite. The rocks are extremely fresh and hard at depths of 100 feet or more. Dikes are probably a continuation of the north dike of the Longfellow Mine.

Area structures include dikes containing parallel seams of chalcocite and pyrite. The dikes outcrop to widths of 30 feet but are locally pinched below the 183 foot mine level. It is a complex system of branching porphyry dikes enclosing irregular masses of altered limestone. It is difficult to connect the bodies exposed on various levels of the mines in the area.

Tectonic component is dispersed fractured zones associated with the complex Copper Mountain Fault system.

Workings totalled 914.4 meters long and 86.26 meters deep. Developments included about 3000 feet of drifts and winzes; the 283 foot deep Yavapai shaft with levels at 118 feet and 183 feet below the collar, and extending in all principal directions; the Yavapai tunnel 18 feet above the shaft level; several stopes pn a line between the Yavapai and West Yankie Mines; Yavapai, Clay, and Petaluma Mines are conencted by tunnels.

Production data included in the Longfellow Metcalf Mine. The Longfellow Metcalf also includes the Mammoth, Longfellow, Metcalf, Detroit, Coronado, Joy and Humboldt Mines of the Arizona Copper Co. Ltd. By 1905 the Yavapai Mine had produced 40,000 tons of first class ore and 80,000 tons of concentrating grade.

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

10 valid minerals.

Detailed Mineral List:

Formula: Cu3(CO3)2(OH)2
Reference: Dana 6: 945, 1094.
Formula: Cu4(SO4)(OH)6
Reference: Dana 6: 945, 1094.
Formula: CuSO4 · 5H2O
Reference: Dana 6: 945, 1094.
Formula: Cu2S
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
Formula: CuFeS2
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
Formula: Fe2+Fe3+2O4
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
Formula: FeS2
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
'Pyroxene Group'
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.
Formula: ZnS
Reference: MRDS database Dep. ID #10048273, MRDS ID #M800396.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Group 4 - Oxides and Hydroxides
Group 5 - Nitrates and Carbonates
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Chalcanthite'7.CB.20CuSO4 · 5H2O
Group 9 - Silicates
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'Pyroxene Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
AmXp, with m:p = 1:1
AmBnXp, with (m+n):p = 1:1
AmBnXp, with (m+n):p = 1:2
Chalcanthite29.6.7.1CuSO4 · 5H2O
(AB)m(XO4)pZq, where m:p>2:1
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
var: Sericite
'Pyroxene Group'-

List of minerals for each chemical element

H AzuriteCu3(CO3)2(OH)2
H BrochantiteCu4(SO4)(OH)6
H ChalcanthiteCuSO4 · 5H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
C AzuriteCu3(CO3)2(OH)2
O AzuriteCu3(CO3)2(OH)2
O BrochantiteCu4(SO4)(OH)6
O ChalcanthiteCuSO4 · 5H2O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Garnet GroupX3Z2(SiO4)3
O MagnetiteFe2+Fe23+O4
O MuscoviteKAl2(AlSi3O10)(OH)2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Garnet GroupX3Z2(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
S BrochantiteCu4(SO4)(OH)6
S ChalcanthiteCuSO4 · 5H2O
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S PyriteFeS2
S SphaleriteZnS
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Cu AzuriteCu3(CO3)2(OH)2
Cu BrochantiteCu4(SO4)(OH)6
Cu ChalcanthiteCuSO4 · 5H2O
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Zn SphaleriteZnS

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

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: 2954925
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, used under Creative Commons Attribution 4.0 License


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 945, 1094.
Bennett (1975) Geology and Origin of the Breccias in the Morenci-Metcalf District, Greenlee County, Arizona, MS thesis, University of Arizona, 153 pp.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology file data.
U.S. Bureau of Land Management Mining District Sheet #840.
MRDS database Dep. ID #10048273, MRDS ID #M800396.

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