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Middle Camp-Oro Fino Mining District, Dome Rock Mountains, La Paz County, Arizona, USAi
Regional Level Types
Middle Camp-Oro Fino Mining DistrictMining District
Dome Rock MountainsMountain Range
La Paz CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
33° North , 114° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~26km
GRN:
N23W68
Type:
Mining District
KΓΆppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
33564
Long-form identifier:
mindat:1:2:33564:4
GUID (UUID V4):
4e58acb1-b379-478d-bf29-f9eb3c7c307b


Ref.: Bancroft, H. (1911), Reconnaissance of the ore deposits in northern Yuma County, Arizona, USGS Bull. 451: 85-86.

Heikes, V.C. (1913) Arizona, in Precious and semiprecious metals in the western states in 1912 (mine production), in Mineral resources of the United States, calendar year 1912, Part I - Metals: U.S. Geological Survey (Washington, D.C., Government Printing Office), p. 536-568.

Jones, E.L., Jr. (1916b) Gold deposits near Quartzsite, Arizona, in Contributions to economic geology, 1915, Part I: Metals and nonmetals except fuels: U.S. Geological Survey Bulletin 62052-57.

Gardner, E.D., and Johnson, C.H. (1934) Placer mining in the western United States, pt. 1; general information, hand-shoveling, and ground-sluicing: U.S. Bureau of Mines Information Circular I.C. 6786, 75 p.

Wilson, E.D. (1961) Gold Placers and Placering in Arizona. Arizona Bureau of Mines Bull. 168 (revised 1978): 30-31.

Johnson, M.G. (1972), Placer gold deposits of Arizona, USGS Bull. 1355, 103p.: 78-80.

Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Bull. 192, Index of Mining Properties in Yuma County, Arizona: 161 (Table 4).

Arizona Bureau of Mines file data.

A Au-Ag-Pb-Cu-Zn-alunite (Bi-Sb) mining district located in T.3-4N., R.19-20W., in La Cholla Wash and its tributaries, Dome Rock Mountains. It is a notch in the West and South of the La Paz District, and is immediately North of the La Cholla District.

Mineralization is varied: (1) Gold placer deposits in seams of gravel close to bedrock in washes and benches on tilted, beveled Mesozoic shale, schist, and slate, and on Mesozoic granite along upper reaches of La Cholla Wash and its tributaries; (2) Spotty gold, silver, lead, copper, and zinc mineralization in quartz veins and stringers, or in bedded eposits along structural planes in Mesozoic metamorphics or granite; and, (3) Natroalunite in schistose and porphyritic dacite intruding Mesozoic schist in Sugar Loaf Peak.

Workings include numerous dry and wet placer operations, mostly from gravel in pits, shafts, and trenches, by small operators. Small mines and prospects. Total estimated and recorded placer gold recovered, from the 1860's through 1974, would be some 12,000 oz., with 1,500 oz. of silver. Mine production for the same period would be some 866 tons of ore containing about 320 oz. of gold, 250 oz. silver, 61 tons lead, 9 tons zinc, and a small amount of copper.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

19 valid minerals.

Detailed Mineral List:

β“˜ Alunite
Formula: KAl3(SO4)2(OH)6
β“˜ Anglesite
Formula: PbSO4
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Calcite
Formula: CaCO3
β“˜ Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
β“˜ 'Chlorite Group'
Description: Occurs in altered vein wall rocks.
β“˜ Cinnabar
Formula: HgS
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Description: Occurs in altered vein wall rocks.
β“˜ Galena
Formula: PbS
β“˜ Gold
Formula: Au
Description: Placer gold.
β“˜ Hematite
Formula: Fe2O3
Habit: High quality crystals to 6.5 cm diameter; some twinned
Description: Crystals with quartz crystals, mirror bright & some twinned.
β“˜ 'Limonite'
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Natroalunite
Formula: NaAl3(SO4)2(OH)6
Description: Occurs in schistose & porphyritic dacite intruding Mesozoic schist.
β“˜ Orthoclase
Formula: K(AlSi3O8)
β“˜ Pyrite
Formula: FeS2
β“˜ Pyrophyllite
Formula: Al2Si4O10(OH)2
Description: Deposit of pyrophyllite 200 to 250 feet thick encountered in a drill hole.
β“˜ Quartz
Formula: SiO2
Description: Crystals with hematite.
β“˜ Rutile
Formula: TiO2
Habit: euhedral, up to a few mm
Colour: deep red
Description: Small deep red crystals associated with hematite.
β“˜ Scheelite
Formula: Ca(WO4)
Description: As nuggets in placer deposits.
β“˜ Siderite
Formula: FeCO3
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
β“˜ Zunyite
Formula: Al13Si5O20(OH,F)18Cl
Habit: Crystals to 2 cm on an edge.
Colour: Buff-colored
Description: Transparent crystals.

Gallery:

Fe2O3β“˜ Hematite
Al2Si4O10(OH)2β“˜ Pyrophyllite
SiO2β“˜ Quartz
Al13Si5O20(OH,F)18Clβ“˜ Zunyite

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
β“˜Galena2.CD.10PbS
β“˜Cinnabar2.CD.15aHgS
β“˜Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
β“˜Rutile4.DB.05TiO2
β“˜Carnotite4.HB.05K2(UO2)2(VO4)2 Β· 3H2O
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Anglesite7.AD.35PbSO4
β“˜Natroalunite7.BC.10NaAl3(SO4)2(OH)6
β“˜Alunite7.BC.10KAl3(SO4)2(OH)6
β“˜Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Zunyite9.BJ.55Al13Si5O20(OH,F)18Cl
β“˜Pyrophyllite9.EC.10Al2Si4O10(OH)2
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Orthoclase9.FA.30K(AlSi3O8)
Unclassified
β“˜'Limonite'-
β“˜'Chlorite Group'-
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

List of minerals for each chemical element

HHydrogen
Hβ“˜ AluniteKAl3(SO4)2(OH)6
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ NatroaluniteNaAl3(SO4)2(OH)6
Hβ“˜ PyrophylliteAl2Si4O10(OH)2
Hβ“˜ ZunyiteAl13Si5O20(OH,F)18Cl
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
BBoron
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ SideriteFeCO3
OOxygen
Oβ“˜ AluniteKAl3(SO4)2(OH)6
Oβ“˜ AnglesitePbSO4
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ CalciteCaCO3
Oβ“˜ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ HematiteFe2O3
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ NatroaluniteNaAl3(SO4)2(OH)6
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ PyrophylliteAl2Si4O10(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ RutileTiO2
Oβ“˜ ScheeliteCa(WO4)
Oβ“˜ SideriteFeCO3
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ ZunyiteAl13Si5O20(OH,F)18Cl
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ ZunyiteAl13Si5O20(OH,F)18Cl
NaSodium
Naβ“˜ NatroaluniteNaAl3(SO4)2(OH)6
MgMagnesium
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alβ“˜ AluniteKAl3(SO4)2(OH)6
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“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ NatroaluniteNaAl3(SO4)2(OH)6
Alβ“˜ OrthoclaseK(AlSi3O8)
Alβ“˜ PyrophylliteAl2Si4O10(OH)2
Alβ“˜ ZunyiteAl13Si5O20(OH,F)18Cl
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“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ PyrophylliteAl2Si4O10(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ ZunyiteAl13Si5O20(OH,F)18Cl
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
Sβ“˜ AluniteKAl3(SO4)2(OH)6
Sβ“˜ AnglesitePbSO4
Sβ“˜ CinnabarHgS
Sβ“˜ GalenaPbS
Sβ“˜ NatroaluniteNaAl3(SO4)2(OH)6
Sβ“˜ PyriteFeS2
ClChlorine
Clβ“˜ ZunyiteAl13Si5O20(OH,F)18Cl
KPotassium
Kβ“˜ AluniteKAl3(SO4)2(OH)6
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ OrthoclaseK(AlSi3O8)
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ ScheeliteCa(WO4)
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ RutileTiO2
VVanadium
Vβ“˜ CarnotiteK2(UO2)2(VO4)2 · 3H2O
FeIron
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ PyriteFeS2
Feβ“˜ SideriteFeCO3
WTungsten
Wβ“˜ ScheeliteCa(WO4)
AuGold
Auβ“˜ GoldAu
HgMercury
Hgβ“˜ CinnabarHgS
PbLead
Pbβ“˜ AnglesitePbSO4
Pbβ“˜ GalenaPbS
UUranium
Uβ“˜ CarnotiteK2(UO2)2(VO4)2 · 3H2O

Localities in this Region

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Other Regions, Features and Areas containing this locality

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