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Mohawk Mine (Mohawk-New Year Mine; Magma Copper Co. property; Mohawk Gold Mining Co. property), Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal Co., Arizona, USAi
Regional Level Types
Mohawk Mine (Mohawk-New Year Mine; Magma Copper Co. property; Mohawk Gold Mining Co. property)Mine
Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine)Mine
St. Anthony depositDeposit
Tiger- not defined -
Mammoth DistrictMining District
Pinal Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
32° 42' 14'' North , 110° 40' 53'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Mammoth1,487 (2017)4.3km
San Manuel3,551 (2011)12.5km
Oracle3,686 (2011)13.3km
Saddle Brooke9,614 (2017)26.0km
Dudleyville959 (2011)31.1km


A former underground Pb-Cu-Ag-Au-Zn-Mo-V mine located in sec.26, T8S, R16E, on private land. Discovered 1881 by Mr. Frank Schultz and closed 1912. Later produced until 1934. Owned by Mohawk Gold Mining Co. The Mohawk Gold Mining Co. owned just the Mohawk and the Mohawk Wedge patented claims in 1917. Development work was done on the New Year claim, which adjoins the Mohawk claim, in 1926. The Molybdenum Corp. of America obtained control of the New Year and Mohawk properties and carried on underground development of both mines in 1933. Later incorporated into the Mammoth-St Anthony Mine nearby. The headframe of this mine stood until 2003 when it was to be demolished as part of the reclamation of the overall San Manuel Mine property, upon the latter mine's closure.

Mineralization is a vein oxidized to the deepest level. The orebody is tabular. Ore control was veins within shear zones and NW-striking rhyolite intrusions. Alteration was oxidation to a depth of 500 feet with silicification from slight to complete replacement is common but most intense in the veins. Breccia fragments are altered to sericite and clay. Some chloritization. Local structures include Quaternary Gila Conglomerate overlying the ore zone. The Mammoth Fault, striking N22°W and dipping 56° to 70° NE, cuts the veins.

Workings went to about the 500 foot level with the 500 foot deep vertical Mohawk shaft (1906-07). The vertical New Year shaft is 140 feet away. There are 5 levels (all in ore) in the Mohawk, with many cross-cuts, drifts, winzes, and stopes. The New Year shaft workings have crosscut a wide, low grade vein on the 425-foot level. A 30-ton capacity mill was erected.

Regions containing this locality

North America PlateTectonic Plate
Sonoran Desert, North AmericaDesert
San Pedro river valley, Arizona/Sonora, USA/MexicoValley

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


20 valid minerals.

Detailed Mineral List:

Anglesite
Formula: PbSO4
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Brochantite
Formula: Cu4(SO4)(OH)6
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Calcite
Formula: CaCO3
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Chalcocite
Formula: Cu2S
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Chalcopyrite
Formula: CuFeS2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
'Chlorite Group'
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Descloizite
Formula: PbZn(VO4)(OH)
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Descloizite var: Cuprian Descloizite
Formula: Pb(Zn,Cu)VO4OH
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Fluorite
Formula: CaF2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Galena
Formula: PbS
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Gold
Formula: Au
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Hematite
Formula: Fe2O3
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Pyrite
Formula: FeS2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Pyrolusite
Formula: Mn4+O2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Quartz
Formula: SiO2
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Silver
Formula: Ag
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Sphalerite
Formula: ZnS
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Vanadinite
Formula: Pb5(VO4)3Cl
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.
Wulfenite
Formula: Pb(MoO4)
Reference: MRDS database Dep. ID #10048300, MRDS ID #M899857.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Pyrolusite4.DB.05Mn4+O2
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Descloizite8.BH.40PbZn(VO4)(OH)
var: Cuprian Descloizite8.BH.40Pb(Zn,Cu)VO4OH
Vanadinite8.BN.05Pb5(VO4)3Cl
Group 9 - Silicates
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)
'Tourmaline'-A(D3)G6(Si6O18)(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
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Pyrolusite4.4.1.4Mn4+O2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Brochantite30.1.3.1Cu4(SO4)(OH)6
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Descloizite41.5.2.1PbZn(VO4)(OH)
A5(XO4)3Zq
Vanadinite41.8.4.3Pb5(VO4)3Cl
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Descloizite
var: Cuprian Descloizite
-Pb(Zn,Cu)VO4OH
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H BrochantiteCu4(SO4)(OH)6
H HemimorphiteZn4Si2O7(OH)2 · H2O
H MalachiteCu2(CO3)(OH)2
H Limonite(Fe,O,OH,H2O)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H Descloizite (var: Cuprian Descloizite)Pb(Zn,Cu)VO4OH
H MuscoviteKAl2(AlSi3O10)(OH)2
H DescloizitePbZn(VO4)(OH)
BBoron
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O AnglesitePbSO4
O BrochantiteCu4(SO4)(OH)6
O HemimorphiteZn4Si2O7(OH)2 · H2O
O MalachiteCu2(CO3)(OH)2
O PyrolusiteMn4+O2
O VanadinitePb5(VO4)3Cl
O WulfenitePb(MoO4)
O CalciteCaCO3
O HematiteFe2O3
O Limonite(Fe,O,OH,H2O)
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O QuartzSiO2
O Descloizite (var: Cuprian Descloizite)Pb(Zn,Cu)VO4OH
O MuscoviteKAl2(AlSi3O10)(OH)2
O DescloizitePbZn(VO4)(OH)
FFluorine
F FluoriteCaF2
AlAluminium
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S AnglesitePbSO4
S BrochantiteCu4(SO4)(OH)6
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S GalenaPbS
S PyriteFeS2
S SphaleriteZnS
ClChlorine
Cl VanadinitePb5(VO4)3Cl
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca FluoriteCaF2
VVanadium
V VanadinitePb5(VO4)3Cl
V Descloizite (var: Cuprian Descloizite)Pb(Zn,Cu)VO4OH
V DescloizitePbZn(VO4)(OH)
MnManganese
Mn PyrolusiteMn4+O2
FeIron
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
CuCopper
Cu BrochantiteCu4(SO4)(OH)6
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
Cu Descloizite (var: Cuprian Descloizite)Pb(Zn,Cu)VO4OH
ZnZinc
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn SphaleriteZnS
Zn Descloizite (var: Cuprian Descloizite)Pb(Zn,Cu)VO4OH
Zn DescloizitePbZn(VO4)(OH)
MoMolybdenum
Mo WulfenitePb(MoO4)
AgSilver
Ag SilverAg
AuGold
Au GoldAu
PbLead
Pb AnglesitePbSO4
Pb GalenaPbS
Pb VanadinitePb5(VO4)3Cl
Pb WulfenitePb(MoO4)
Pb Descloizite (var: Cuprian Descloizite)Pb(Zn,Cu)VO4OH
Pb DescloizitePbZn(VO4)(OH)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Tenny, J.B. (1927-1929) History of Mining in Arizona, Special Collection, University of Arizona Library & Arizona Bureau of Mines Library: 325-329.
Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining. Arizona Bureau of Mines Bull. 137 (revised 1967): 170-174.
Peterson, Nels P. (1938) Geology and Ore Deposits of the Mammoth Mining Camp area, Pinal County, Arizona. Arizona Bureau of Mines Bull. 144: 60-62.
Creasey, S.C. (1965) Geology of the San Manuel area, Pinal County, Arizona, USGS Professional Paper 471: 31.
Rocks & Minerals (1982): 57: 5-10.
U.S. Bureau of Land Management District Sheet #706.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology production file data.
Arizona Department of Mineral Resources Magma Copper Co. Active file.
Arizona Department of Mineral Resources St. Anthony Mining and Development Co. file.
Arizona Department of Mineral Resources U file.
USGS Mammoth Quadrangle map.
MRDS database Dep. ID #10048300, MRDS ID #M899857; and Dep. ID #10259460, MAS ID #0040210714.

USGS MRDS Record:10048300
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