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Middle Camp-Oro Fino District, Dome Rock Mts, La Paz Co., Arizona, USA

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 33° 38' 25'' North , 114° 19' 0'' West (est.)
Margin of Error:~0km
Locality type:Mining District
Köppen climate type:BWh : Hot deserts climate


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.

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

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

23 valid minerals.

Detailed Mineral List:

Alunite
Formula: KAl3(SO4)2(OH)6
Andalusite
Formula: Al2(SiO4)O
Anglesite
Formula: PbSO4
'Biotite'
Calcite
Formula: CaCO3
'Chlorite Group'
Cinnabar
Formula: HgS
'commodity:Copper'
Formula: Cu
Dumortierite
Formula: (Al,Fe3+)7(SiO4)3(BO3)O3
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Galena
Formula: PbS
Gold
Formula: Au
Hematite
Formula: Fe2O3
Kyanite
Formula: Al2(SiO4)O
'Limonite'
Formula: (Fe,O,OH,H2O)
Magnetite
Formula: Fe2+Fe3+2O4
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Natroalunite
Formula: NaAl3(SO4)2(OH)6
Orthoclase
Formula: K(AlSi3O8)
Pyrite
Formula: FeS2
Pyrophyllite
Formula: Al2Si4O10(OH)2
Quartz
Formula: SiO2
Rutile
Formula: TiO2
Scheelite
Formula: Ca(WO4)
Siderite
Formula: FeCO3
Sillimanite
Formula: Al2(SiO4)O
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Zunyite
Formula: Al13Si5O20(OH,F)18Cl

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Gold'1.AA.05Au
Group 2 - Sulphides and Sulfosalts
'Cinnabar'2.CD.15aHgS
'Galena'2.CD.10PbS
'Pyrite'2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
'Hematite'4.CB.05Fe2O3
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Quartz'4.DA.05SiO2
'Rutile'4.DB.05TiO2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Alunite'7.BC.10KAl3(SO4)2(OH)6
'Anglesite'7.AD.35PbSO4
'Natroalunite'7.BC.10NaAl3(SO4)2(OH)6
'Scheelite'7.GA.05Ca(WO4)
Group 9 - Silicates
'Andalusite'9.AF.10Al2(SiO4)O
'Dumortierite'9.AJ.10(Al,Fe3+)7(SiO4)3(BO3)O3
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Kyanite'9.AF.15Al2(SiO4)O
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
'Orthoclase'9.FA.30K(AlSi3O8)
'Pyrophyllite'9.EC.10Al2Si4O10(OH)2
Sillimanite9.AF.05Al2(SiO4)O
Zunyite9.BJ.55Al13Si5O20(OH,F)18Cl
Unclassified Minerals, Rocks, etc.
'Biotite'-
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Cinnabar2.8.14.1HgS
Galena2.8.1.1PbS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Alunite30.2.4.1KAl3(SO4)2(OH)6
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Andalusite52.2.2b.1Al2(SiO4)O
Kyanite52.2.2c.1Al2(SiO4)O
Sillimanite52.2.2a.1Al2(SiO4)O
Group 54 - NESOSILICATES Borosilicates and Some Beryllosilicates
Borosilicates and Some Beryllosilicates with (BO3)
Dumortierite54.1.2.1(Al,Fe3+)7(SiO4)3(BO3)O3
Group 57 - SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
Insular Si3O10 and Larger Noncyclic Groups with [Si5O16] groups
Zunyite57.3.1.1Al13Si5O20(OH,F)18Cl
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)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Pyrophyllite71.2.1.1Al2Si4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Biotite'-
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Natroalunite-NaAl3(SO4)2(OH)6
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H AluniteKAl3(SO4)2(OH)6
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Limonite(Fe,O,OH,H2O)
H MuscoviteKAl2(AlSi3O10)(OH)2
H NatroaluniteNaAl3(SO4)2(OH)6
H PyrophylliteAl2Si4O10(OH)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H ZunyiteAl13Si5O20(OH,F)18Cl
BBoron
B Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C CalciteCaCO3
C SideriteFeCO3
OOxygen
O AluniteKAl3(SO4)2(OH)6
O AndalusiteAl2(SiO4)O
O AnglesitePbSO4
O CalciteCaCO3
O Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O KyaniteAl2(SiO4)O
O Limonite(Fe,O,OH,H2O)
O MagnetiteFe2+Fe23+O4
O MuscoviteKAl2(AlSi3O10)(OH)2
O NatroaluniteNaAl3(SO4)2(OH)6
O OrthoclaseK(AlSi3O8)
O PyrophylliteAl2Si4O10(OH)2
O QuartzSiO2
O RutileTiO2
O ScheeliteCa(WO4)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O SideriteFeCO3
O SillimaniteAl2(SiO4)O
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O ZunyiteAl13Si5O20(OH,F)18Cl
FFluorine
F ZunyiteAl13Si5O20(OH,F)18Cl
NaSodium
Na NatroaluniteNaAl3(SO4)2(OH)6
AlAluminium
Al AluniteKAl3(SO4)2(OH)6
Al AndalusiteAl2(SiO4)O
Al Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al KyaniteAl2(SiO4)O
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al NatroaluniteNaAl3(SO4)2(OH)6
Al OrthoclaseK(AlSi3O8)
Al PyrophylliteAl2Si4O10(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al SillimaniteAl2(SiO4)O
Al ZunyiteAl13Si5O20(OH,F)18Cl
SiSilicon
Si AndalusiteAl2(SiO4)O
Si Dumortierite(Al,Fe3+)7(SiO4)3(BO3)O3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si KyaniteAl2(SiO4)O
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si OrthoclaseK(AlSi3O8)
Si PyrophylliteAl2Si4O10(OH)2
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si SillimaniteAl2(SiO4)O
Si ZunyiteAl13Si5O20(OH,F)18Cl
SSulfur
S AluniteKAl3(SO4)2(OH)6
S AnglesitePbSO4
S CinnabarHgS
S GalenaPbS
S NatroaluniteNaAl3(SO4)2(OH)6
S PyriteFeS2
ClChlorine
Cl ZunyiteAl13Si5O20(OH,F)18Cl
KPotassium
K AluniteKAl3(SO4)2(OH)6
K MuscoviteKAl2(AlSi3O10)(OH)2
K OrthoclaseK(AlSi3O8)
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca ScheeliteCa(WO4)
TiTitanium
Ti RutileTiO2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe SideriteFeCO3
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
HgMercury
Hg CinnabarHgS
PbLead
Pb AnglesitePbSO4
Pb GalenaPbS

Localities in this Region
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