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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):
Type:
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:

'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Description: Alteration product, noted in drill cores.
Bornite
Formula: Cu5FeS4
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
Description: Occurs in steeply-dipping quartz veins.
'Chlorite Group'
Description: An alteration product noted in drill cores.
Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Description: Noted in drill cores.
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Colour: Bright yellow
Description: In upper workings where molybdenite is more plentiful.
Hematite
Formula: Fe2O3
Jarosite
Formula: KFe3+3(SO4)2(OH)6
Kaolinite
Formula: Al2(Si2O5)(OH)4
Description: Alteration product in drill cores.
'Limonite'
Malachite
Formula: Cu2(CO3)(OH)2
Molybdenite
Formula: MoS2
Description: Occurs in low-dipping and steeply-dipping quartz veins in breccia of a breccia pipe.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
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
Chalcocite2.BA.05Cu2S
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Group 5 - Nitrates and Carbonates
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Ferrimolybdite7.GB.30Fe2(MoO4)3 · nH2O
Group 9 - Silicates
Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
'Chlorite Group'-
'Limonite'-

List of minerals for each chemical element

HHydrogen
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
H Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
H FerrimolybditeFe2(MoO4)3 · nH2O
H JarositeKFe33+(SO4)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H MalachiteCu2(CO3)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
C MalachiteCu2(CO3)(OH)2
OOxygen
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
O Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
O FerrimolybditeFe2(MoO4)3 · nH2O
O HematiteFe2O3
O JarositeKFe33+(SO4)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O MalachiteCu2(CO3)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Al Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Al KaoliniteAl2(Si2O5)(OH)4
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Si Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Si KaoliniteAl2(Si2O5)(OH)4
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S JarositeKFe33+(SO4)2(OH)6
S MolybdeniteMoS2
S PyriteFeS2
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
K JarositeKFe33+(SO4)2(OH)6
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
TiTitanium
Ti BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Fe FerrimolybditeFe2(MoO4)3 · nH2O
Fe HematiteFe2O3
Fe JarositeKFe33+(SO4)2(OH)6
Fe PyriteFeS2
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu MalachiteCu2(CO3)(OH)2
MoMolybdenum
Mo FerrimolybditeFe2(MoO4)3 · nH2O
Mo MolybdeniteMoS2

Other Regions, Features and Areas containing this locality


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References

 
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