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Ajax Mine (Copperopolis; Sioux Ajax), Mammoth, Tintic Mining District, Juab County, Utah, USAi
Regional Level Types
Ajax Mine (Copperopolis; Sioux Ajax)Mine
MammothTown (Historical)
Tintic Mining DistrictMining District
Juab CountyCounty
UtahState
USACountry

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Latitude & Longitude (WGS84):
39° 55' 39'' North , 112° 6' 44'' West
Latitude & Longitude (decimal):
39.92750,-112.11250
GeoHash:
G#: 9x070ud4t
GRN:
N27W62
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Eureka666 (2017)3.0km
Mount Nebo302 (2006)13.6km
Elberta256 (2011)14.3km
Goshen944 (2017)18.3km
Genola1,419 (2017)24.2km
Mindat Locality ID:
4157
Long-form identifier:
mindat:1:2:4157:0
GUID (UUID V4):
adbe6323-3569-4962-8016-ffa982d7031f
Other/historical names associated with this locality:
American Eagle; Am. Eagle


A former Ag-Au-Cu-Pb-Fe occurrence/mine located 1.2 km (0.7 mile) E of Mammoth (head of canyon, 3000 feet S 57 W of Mammoth Peak on lower W slope of the mountain), on private land. Owned by the Gold Chain Mining Co., C/O E.S. Mcintyre, Eureka, Utah. Operated by the Mammoth Mining Company (1930- ). MRDS database accuracy for this location is not stated. Consolidated in 1909 with the Cleveland, Pedro and Gold Chain group as the Gold Chain Mine. Explored in 1926 from the 1800 level of the Lower Mammoth Mine.

Mineralization is hosted in Late Cambrian dolomite (Ajax Dolomite; Opex Formation). The ore body is a chimney with a length of 609.6 meters, a depth-to-bottom of 304.8 meters. North-trending fissures with NE offshoots are present. Beds strike N55W and dip 20NE. Fractures trend N-S, N25E, N35E, N65E, N55W and dip 70-90W. Gossan deposit. Strikes N to W of the Mammoth pipe. Local geologic structures include horizontal ore shoots along beddings. Local alteration includes contact metamorphism. Associated rocks include Pliocene-Late Cambrian monzonite. Local rocks include Upper Cambrian carbonate rocks in central Utah.

Workings include underground openings with an overall depth of 335.28 meters and an overall length of 609.6 meters. The old shaft is caved into the stopes and is dangerous. There is a 400 foot adit (Ajax adit), an internal shaft (winze ?) and shallow surface workings. The Ajax shaft at 1,100 feet deep was used in 1917, and was sunk from the Ajax adit 400 feet from the portal. In all there are several shafts.

Production amounted to $3,000,000 (period values) of Cu, Ag & Au from the Ajax and Gold Chain mines during the period 1899 to 1917.

Analytical data results: 0.6 ounce Au; 2 to 14 ounces Ag; 2 to 8% Cu; 50 to 70% Si; 1% Zn.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


23 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Aragonite
Formula: CaCO3
ⓘ Arseniosiderite ?
Formula: Ca2Fe3+3(AsO4)3O2 · 3H2O
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
References:
R&M 66:1 p24-28
ⓘ Chalcophyllite
Formula: Cu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
ⓘ Chenevixite
Formula: Cu2Fe3+2(AsO4)2(OH)4
ⓘ Clinoclase
Formula: Cu3(AsO4)(OH)3
ⓘ Conichalcite
Formula: CaCu(AsO4)(OH)
ⓘ Copper
Formula: Cu
ⓘ Cornwallite
Formula: Cu5(AsO4)2(OH)4
ⓘ Cyanotrichite
Formula: Cu4Al2(SO4)(OH)12 · 2H2O
ⓘ Descloizite
Formula: PbZn(VO4)(OH)
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Enargite
Formula: Cu3AsS4
ⓘ Goethite
Formula: α-Fe3+O(OH)
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Gypsum var. Selenite
Formula: CaSO4 · 2H2O
ⓘ Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
ⓘ Kettnerite
Formula: CaBiCO3OF
ⓘ Mixite
Formula: BiCu6(AsO4)3(OH)6 · 3H2O
ⓘ Olivenite
Formula: Cu2(AsO4)(OH)
ⓘ Quartz
Formula: SiO2
ⓘ Scorodite
Formula: Fe3+AsO4 · 2H2O
ⓘ Tenorite
Formula: CuO
ⓘ Tyrolite
Formula: Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O

Gallery:

CaCO3ⓘ Aragonite
Cu3(AsO4)(OH)3ⓘ Clinoclase
CaCu(AsO4)(OH)ⓘ Conichalcite
PbZn(VO4)(OH)ⓘ Descloizite
Fe3+AsO4 · 2H2Oⓘ Scorodite

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘCopper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
ⓘEnargite2.KA.05Cu3AsS4
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.α-Fe3+O(OH)
ⓘTenorite4.AB.10CuO
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘAragonite5.AB.15CaCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘKettnerite5.BE.30CaBiCO3OF
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘGypsum
var. Selenite		7.CD.40CaSO4 · 2H2O
ⓘ7.CD.40CaSO4 · 2H2O
ⓘCyanotrichite7.DE.10Cu4Al2(SO4)(OH)12 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘOlivenite8.BB.30Cu2(AsO4)(OH)
ⓘCornwallite8.BD.05Cu5(AsO4)2(OH)4
ⓘClinoclase8.BE.20Cu3(AsO4)(OH)3
ⓘConichalcite8.BH.35CaCu(AsO4)(OH)
ⓘDescloizite8.BH.40PbZn(VO4)(OH)
ⓘScorodite8.CD.10Fe3+AsO4 · 2H2O
ⓘChenevixite8.DD.05Cu2Fe3+2(AsO4)2(OH)4
ⓘChalcophyllite8.DF.30Cu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
ⓘArseniosiderite ?8.DH.30Ca2Fe3+3(AsO4)3O2 · 3H2O
ⓘMixite8.DL.15BiCu6(AsO4)3(OH)6 · 3H2O
ⓘTyrolite8.DM.10Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Group 9 - Silicates
ⓘHemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O

List of minerals for each chemical element

HHydrogen
Hⓘ ArseniosideriteCa2Fe33+(AsO4)3O2 · 3H2O
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Hⓘ ChenevixiteCu2Fe23+(AsO4)2(OH)4
Hⓘ ClinoclaseCu3(AsO4)(OH)3
Hⓘ ConichalciteCaCu(AsO4)(OH)
Hⓘ CornwalliteCu5(AsO4)2(OH)4
Hⓘ CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2O
Hⓘ DescloizitePbZn(VO4)(OH)
Hⓘ Goethiteα-Fe3+O(OH)
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
Hⓘ MixiteBiCu6(AsO4)3(OH)6 · 3H2O
Hⓘ OliveniteCu2(AsO4)(OH)
Hⓘ ScoroditeFe3+AsO4 · 2H2O
Hⓘ TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Hⓘ Gypsum var. SeleniteCaSO4 · 2H2O
CCarbon
Cⓘ AragoniteCaCO3
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ DolomiteCaMg(CO3)2
Cⓘ KettneriteCaBiCO3OF
Cⓘ TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
OOxygen
Oⓘ AragoniteCaCO3
Oⓘ ArseniosideriteCa2Fe33+(AsO4)3O2 · 3H2O
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Oⓘ ChenevixiteCu2Fe23+(AsO4)2(OH)4
Oⓘ ClinoclaseCu3(AsO4)(OH)3
Oⓘ ConichalciteCaCu(AsO4)(OH)
Oⓘ CornwalliteCu5(AsO4)2(OH)4
Oⓘ CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2O
Oⓘ DescloizitePbZn(VO4)(OH)
Oⓘ DolomiteCaMg(CO3)2
Oⓘ Goethiteα-Fe3+O(OH)
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
Oⓘ KettneriteCaBiCO3OF
Oⓘ MixiteBiCu6(AsO4)3(OH)6 · 3H2O
Oⓘ OliveniteCu2(AsO4)(OH)
Oⓘ QuartzSiO2
Oⓘ ScoroditeFe3+AsO4 · 2H2O
Oⓘ TenoriteCuO
Oⓘ TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Oⓘ Gypsum var. SeleniteCaSO4 · 2H2O
FFluorine
Fⓘ KettneriteCaBiCO3OF
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
AlAluminium
Alⓘ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Alⓘ CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2O
SiSilicon
Siⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
Siⓘ QuartzSiO2
SSulfur
Sⓘ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Sⓘ CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2O
Sⓘ EnargiteCu3AsS4
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ Gypsum var. SeleniteCaSO4 · 2H2O
CaCalcium
Caⓘ AragoniteCaCO3
Caⓘ ArseniosideriteCa2Fe33+(AsO4)3O2 · 3H2O
Caⓘ ConichalciteCaCu(AsO4)(OH)
Caⓘ DolomiteCaMg(CO3)2
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ KettneriteCaBiCO3OF
Caⓘ TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
Caⓘ Gypsum var. SeleniteCaSO4 · 2H2O
VVanadium
Vⓘ DescloizitePbZn(VO4)(OH)
FeIron
Feⓘ ArseniosideriteCa2Fe33+(AsO4)3O2 · 3H2O
Feⓘ ChenevixiteCu2Fe23+(AsO4)2(OH)4
Feⓘ Goethiteα-Fe3+O(OH)
Feⓘ ScoroditeFe3+AsO4 · 2H2O
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Cuⓘ ChenevixiteCu2Fe23+(AsO4)2(OH)4
Cuⓘ ClinoclaseCu3(AsO4)(OH)3
Cuⓘ ConichalciteCaCu(AsO4)(OH)
Cuⓘ CornwalliteCu5(AsO4)2(OH)4
Cuⓘ CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2O
Cuⓘ CopperCu
Cuⓘ EnargiteCu3AsS4
Cuⓘ MixiteBiCu6(AsO4)3(OH)6 · 3H2O
Cuⓘ OliveniteCu2(AsO4)(OH)
Cuⓘ TenoriteCuO
Cuⓘ TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
ZnZinc
Znⓘ DescloizitePbZn(VO4)(OH)
Znⓘ HemimorphiteZn4Si2O7(OH)2 · H2O
AsArsenic
Asⓘ ArseniosideriteCa2Fe33+(AsO4)3O2 · 3H2O
Asⓘ ChalcophylliteCu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Asⓘ ChenevixiteCu2Fe23+(AsO4)2(OH)4
Asⓘ ClinoclaseCu3(AsO4)(OH)3
Asⓘ ConichalciteCaCu(AsO4)(OH)
Asⓘ CornwalliteCu5(AsO4)2(OH)4
Asⓘ EnargiteCu3AsS4
Asⓘ MixiteBiCu6(AsO4)3(OH)6 · 3H2O
Asⓘ OliveniteCu2(AsO4)(OH)
Asⓘ ScoroditeFe3+AsO4 · 2H2O
Asⓘ TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2O
PbLead
Pbⓘ DescloizitePbZn(VO4)(OH)
BiBismuth
Biⓘ KettneriteCaBiCO3OF
Biⓘ MixiteBiCu6(AsO4)3(OH)6 · 3H2O

Other Databases

Link to USGS MRDS:10020098
Link to USGS MRDS:10042164

Other Regions, Features and Areas containing this locality

North America PlateTectonic Plate
USA

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

Tower, Jr., G.W., and Smith, G.O. (1898), USGS 19th. Annual Report, volume III: 744.
Lindgren, Waldemar, and Loughlin, G.F. (1919), Geology and Ore Deposits of the Tintic Mining District, USGS Professional Paper 107, 276 pp.: 134.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II- 841, 861.
Cook, D.R. (1957), Geology of the East Tintic Mountains and Ore Deposits of the Tintic Mining District: Utah Geological Society Guidebook 12: 9, Pl. 3.
Morris, H.T. (1964), Geology of the Eureka Quadrangle, Utah and Juab Counties, Utah,USGS Bulletin 1142-K: K1-K29.
Morris, H.T. (1968), The Main Tintic Mining District, in: Ridge, J.D., editor, Graton Sales Volume, A.I.M.E.
Conservation Division Comp. date (1970), (08-07-1970).
Morris, H.T., and Lovering, T.S. (1979), General Geology and Mines of the East Tintic Mining District, Utah and Juab Counties, Utah, USGS Professional Paper 1024, 194 pages.
Bullock, Kenneth C. (1981) Minerals and mineral localities of Utah. Bulletin 117. Utah Geological and Mineral Survey
McIntyre, E. Steele (1983), personal interview (October, 1983) (Mammoth Mine; Gold Chain Mine).
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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