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Copper Hill Mine (Copper Hill group; Patented claims MS 4452), Copper Basin Mining District, Sierra Prieta Mountains, Yavapai County, Arizona, USAi
Regional Level Types
Copper Hill Mine (Copper Hill group; Patented claims MS 4452)Mine
Copper Basin Mining DistrictMining District
Sierra Prieta MountainsMountain Range
Yavapai CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
34° 29' 25'' North , 112° 35' 39'' West
Latitude & Longitude (decimal):
34.49055,-112.59417
GeoHash:
G#: 9qpujyg6j
GRN:
N23W67
Type:
Mine
KΓΆppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Wilhoit868 (2011)7.2km
Prescott41,899 (2017)12.8km
Williamson5,438 (2011)22.7km
Peeples Valley428 (2011)27.5km
Prescott Valley42,197 (2017)28.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Prescott Gem & Mineral ClubPrescott Valley, Arizona29km
Mindat Locality ID:
46803
Long-form identifier:
mindat:1:2:46803:0
GUID (UUID V4):
aa461746-067e-4327-887d-74541ee3e0eb


A former underground Cu-Au-Ag-Pb-Zn-Mo mine located on 8 claims, near the center of sec. 20, T.13N., R.3W. (Wilhoit 7.5 minute topo map). Owned by Schemmer and J.E. Erickson, and was under lease to the Copper Basin Molybdenum Co. Produced 1906-1968.

Mineralization is a 300 foot diameter breccia pipe with a pipe-like or vertical cylindrical ore body. It intrudes the prevailing rock, a deeply weathered, coarse-grained, Proterozoic hornblende-quartz diorite intruded by fine-grained biotite-quartz diorite. Aplite dikes are numerous near Quartz Hill and Cross Hill. Rhyolite dikes and plugs intrude the coarse-grained quartz diorite north of Copper Hill, and south of this hill a quartz diorite porphyry dike, 30 to 50 feet wide, intrudes both the coarse- and fine-grained quartz diorite.

Both facies of quartz diorite locally have been brecciated, sericitized, and silicified. The alteration process has produced distinct zones, circular to elliptical in outline, some of which are breccia pipes. These zones are more resistant to erosion, and they form the summit areas of small hills.

The breccia in the altered hornblende-quartz diorite area is cut by low-dipping quartz veins that contain small amounts of pyrite, chalcopyrite and molybdenite. Steeply dipping quartz seams cut the breccia and the low-dipping quartz veins, but the displacement is small. Chalcopyrite and molybdenite are more common in the steeply-dipping quartz seams and in vein quartz that cements breccia fragments. Molybdenite occurs in finely-divided veinlets cutting quartz or at the margin of the veins, whereas chalcopyrite is disseminated in the quartz. Seams of brilliant yellow ferrimolybdite occur in the upper workings.

Workings feature a main shaft 300 feet deep. Underground workings include drifts, crosscuts, an old shaft, an adit, and a winze. Much of the underground development was done in 1906. Additional development work was done in 1917-18. Production of Mo ore was some 1,800 tons (1916-1918)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Description: Alteration product, noted in drill cores.
β“˜ Bornite
Formula: Cu5FeS4
β“˜ Chalcocite
Formula: Cu2S
β“˜ Chalcopyrite
Formula: CuFeS2
Description: Occurs in steeply-dipping quartz veins.
β“˜ 'Chlorite Group'
Description: An alteration product noted in drill cores.
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Description: Noted in drill cores.
β“˜ Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Colour: Bright yellow
Description: In upper workings where molybdenite is more plentiful.
β“˜ Hematite
Formula: Fe2O3
β“˜ Jarosite
Formula: KFe3+3(SO4)2(OH)6
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
Description: Alteration product in drill cores.
β“˜ 'Limonite'
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Molybdenite
Formula: MoS2
Description: Occurs in low-dipping and steeply-dipping quartz veins in breccia of a breccia pipe.
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Pyrite
Formula: FeS2
Description: Occurs in low-dipping quartz veins.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Bornite2.BA.15Cu5FeS4
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Molybdenite2.EA.30MoS2
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Hematite4.CB.05Fe2O3
Group 5 - Nitrates and Carbonates
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Jarosite7.BC.10KFe3+3(SO4)2(OH)6
β“˜Ferrimolybdite7.GB.30Fe2(MoO4)3 Β· nH2O
Group 9 - Silicates
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Chlorite Group'-
β“˜'Limonite'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Hβ“˜ JarositeKFe33+(SO4)2(OH)6
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Oβ“˜ HematiteFe2O3
Oβ“˜ JarositeKFe33+(SO4)2(OH)6
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sβ“˜ BorniteCu5FeS4
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcociteCu2S
Sβ“˜ JarositeKFe33+(SO4)2(OH)6
Sβ“˜ MolybdeniteMoS2
Sβ“˜ PyriteFeS2
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ JarositeKFe33+(SO4)2(OH)6
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ BorniteCu5FeS4
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Feβ“˜ HematiteFe2O3
Feβ“˜ JarositeKFe33+(SO4)2(OH)6
Feβ“˜ PyriteFeS2
CuCopper
Cuβ“˜ BorniteCu5FeS4
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ MalachiteCu2(CO3)(OH)2
MoMolybdenum
Moβ“˜ FerrimolybditeFe2(MoO4)3 · nH2O
Moβ“˜ MolybdeniteMoS2

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate

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

U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.
USGS Wilhoit Quadrangle map.
Arizona Department of Mineral Resources Loma Linda Mine file.
U.S. Bureau of Land Management Mining District Sheet 268.
MRDS database Dep. ID #10109059, MRDS ID #M003750; and, Dep. ID #10283772, MAS ID #0040250563.
Galbraith, F. W. (1947) Minerals of Arizona (Second Edition, Revised) University of Arizona Bulletin 153. Arizona Bureau of Mines
Johnston, W.P. (1955) Copper Basin Deposits. Ph.D. thesis, University of Utah (unpublished).
Johnson, W.P. & J.D. Lowell (1961), Geology and origin of mineralized breccia pipes in Copper Basin, Arizona, Economic Geology: 56: 916-940.
Kirkemo, H., et al (1965), Investigations of Molybdenum Deposits in the Conterminous United States 1942-60, Contributions to Economic Geology, USGS Bull. 1182-E: E16-E18.
Christman, Jerry (1978) Copper Basin District, M.S. thesis, University of Arizona, 78pp. (unpublished).
Hicks, C.J. (1979), Molybdenum occurrences in Arizona, Arizona Department of Mineral Resources Min. Report #3: 25.
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, AZ Dept. Mines & Min. Resources Open File Rept. 92-10: 17 (Table 1).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 302.
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