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Steppe Mine (Steppe claim; Little Mary Mine), Mildren Mine group, Ko Vaya, Cababi Mining District (Comobabi Mining District), Comobabi Mountains, Pima County, Arizona, USAi
Regional Level Types
Steppe Mine (Steppe claim; Little Mary Mine)Mine
Mildren Mine group- not defined -
Ko Vaya- not defined -
Cababi Mining District (Comobabi Mining District)Mining District
Comobabi MountainsMountain Range
Pima CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
32° 1' 0'' North , 111° 54' 45'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Sells2,495 (2011)12.0km
Ali Chukson132 (2011)15.7km
Gu Oidak188 (2011)16.2km
Topawa299 (2011)24.0km
Cowlic135 (2011)24.2km
Mindat Locality ID:
35526
Long-form identifier:
mindat:1:2:35526:8
GUID (UUID V4):
0


‡Ref.: Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining. Arizona Bureau of Mines Bull. 137.

Williams, S.A. (1962) The mineralogy of the Mildren and Steppe mining districts, Pima County, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 145 p.

Williams, S.A. (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima County, Arizona, Economic Geology: 58: 1119-1125.

Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 111 (Table 4).

Elevatorski, E.A. (1978), Arizona Industrial Minerals, Arizona Department of Mineral Resources, Minerals Report No. 2: 49.

Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 112, 121, 126, 128, 146, 149, 163, 166, 169, 174, 186, 188, 194, 196, 202, 207, 220, 229, 233, 235, 238, 242, 251, 259, 262, 274, 275, 279, 291, 298, 302, 307, 344, 357, 370, 374, 385, 387, 411, 420, 426.

MRDS database Dep. ID file #10039670, MRDS ID #M050622; and, Dep. ID #10113599, MAS ID #0040190295.

A former small underground Cu-Au-Ag-Pb-Zn-Mo-Rh-Baryte mine located in the SW ¼ sec. 23 & the NW ¼ sec. 26, T.16S., R.4E. (protracted), 8 miles WSW of Comobabi and 1 mile NE of Wickchoupai village. Produced 1917-1970. Owned/operated by the Stepp Brothers; Como-Pima Mining Corp.; G.A. Withers; Beids Mining Co.; Hardy; Rogers; and, Medd.

Mineralization is lensing, quartz-fissure veins, partly brecciated, containing shoots of barite and stringers of dolomite. 2 veins about 500 feet apart. Iron and copper oxides occur in the upper part and change to sulfides, including ruby silver, with depth. Minor tetrahedrite and molybdenite are also found. The wall rock is Cretaceous (?) amygdaloidal andesite flows. Ore control was the altered andesite, and brecciated fissure veins in gently dipping andesites. Alteration was oxidation and leaching of wall rock. Rhenium found spectrographically in bornite. Ore width is 3.05 meters with a NW strike and dip of 70NE.

Local structures include a NE vertical fault displacing the Little Mary and Chicago veins; A NW fault, with a dip of 40NE, displacing the Little Mary vain. Flows are intruded by dikes, Picacho Andesite, and Coon Canyon Volcanics.

Workings include shaft and tunnel operations to a depth of 76.2 meters, and, as of 1925, a 50 ton flotation mill. Worked from 1917 to 1970 and produced some 800 tons of picked ore averaging about 0.2 oz. Au/T, 15 oz. Ag/T, 54% Pb, 4% Cu, and a little zinc.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


43 valid minerals.

Detailed Mineral List:

ⓘ Anglesite
Formula: PbSO4
ⓘ Atacamite
Formula: Cu2(OH)3Cl
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Baryte
Formula: BaSO4
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Brochantite
Formula: Cu4(SO4)(OH)6
ⓘ Buttgenbachite
Formula: Cu19(NO3)2(OH)32Cl4 · 2H2O
Description: Product of the oxidation of sulfide ores; in quartz veins cutting andesite.
ⓘ Chalcocite
Formula: Cu2S
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Chlorargyrite
Formula: AgCl
ⓘ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
ⓘ Crocoite
Formula: PbCr6+O4
ⓘ Cuprite
Formula: Cu2O
ⓘ Devilline
Formula: CaCu4(SO4)2(OH)6 · 3H2O
Description: Occurs in quartz veins cutting andesite.
ⓘ Devilline var. Zinc-bearing Devilline
Formula: Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Description: Occurs in quartz veins cutting andesite.
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Dolomite var. Zinc-bearing Dolomite
Formula: Ca(Mg,Zn)(CO3)2
ⓘ Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
ⓘ Galena
Formula: PbS
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Goslarite
Formula: ZnSO4 · 7H2O
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Hisingerite
Formula: Fe3+2(Si2O5)(OH)4 · 2H2O
ⓘ Iodargyrite
Formula: AgI
ⓘ Jarosite
Formula: KFe3+3(SO4)2(OH)6
Habit: Tablets to 5 mm diameter
Colour: Zone-colored
Description: Lovely zone-colored crystals in vugs in milky quartz.
ⓘ Leadhillite
Formula: Pb4(CO3)2(SO4)(OH)2
ⓘ Lepidocrocite
Formula: Fe3+O(OH)
ⓘ Litharge
Formula: PbO
Description: Occurs as an alteration product of wulfenite.
ⓘ Massicot
Formula: PbO
Colour: Yellow
Description: Earthy alteration product of galena.
ⓘ Miersite
Formula: (Ag,Cu)I
Description: As overgrowths on iodargyrite.
ⓘ Molybdenite
Formula: MoS2
ⓘ Mottramite
Formula: PbCu(VO4)(OH)
ⓘ Native Copper
Formula: Cu
ⓘ Native Gold
Formula: Au
ⓘ Pyrite
Formula: FeS2
ⓘ Pyromorphite
Formula: Pb5(PO4)3Cl
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Milky Quartz
Formula: SiO2
ⓘ Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
ⓘ Siderite
Formula: FeCO3
ⓘ Smithsonite
Formula: ZnCO3
ⓘ Stromeyerite
Formula: AgCuS
ⓘ Svanbergite
Formula: SrAl3(PO4)(SO4)(OH)6
ⓘ 'Tetrahedrite Subgroup'
Formula: Cu6(Cu4C2+2)Sb4S12S
ⓘ Vanadinite
Formula: Pb5(VO4)3Cl
ⓘ Willemite
Formula: Zn2SiO4
ⓘ Wulfenite
Formula: Pb(MoO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘBornite2.BA.15Cu5FeS4
ⓘStromeyerite2.BA.40AgCuS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘ'Tetrahedrite Subgroup'2.GB.05Cu6(Cu4C2+2)Sb4S12S
Group 3 - Halides
ⓘMiersite3.AA.05(Ag,Cu)I
ⓘIodargyrite3.AA.10AgI
ⓘChlorargyrite3.AA.15AgCl
ⓘAtacamite3.DA.10aCu2(OH)3Cl
ⓘButtgenbachite3.DA.25Cu19(NO3)2(OH)32Cl4 · 2H2O
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘCuprite4.AA.10Cu2O
ⓘLitharge4.AC.20PbO
ⓘMassicot4.AC.25PbO
ⓘQuartz4.DA.05SiO2
ⓘvar. Milky Quartz4.DA.05SiO2
ⓘLepidocrocite4.FE.15Fe3+O(OH)
Group 5 - Nitrates and Carbonates
ⓘSiderite5.AB.05FeCO3
ⓘSmithsonite5.AB.05ZnCO3
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘvar. Zinc-bearing Dolomite5.AB.10Ca(Mg,Zn)(CO3)2
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘRosasite5.BA.10(Cu,Zn)2(CO3)(OH)2
ⓘLeadhillite5.BF.40Pb4(CO3)2(SO4)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAnglesite7.AD.35PbSO4
ⓘBaryte7.AD.35BaSO4
ⓘBrochantite7.BB.25Cu4(SO4)(OH)6
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
ⓘGoslarite7.CB.40ZnSO4 · 7H2O
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘDevilline7.DD.30CaCu4(SO4)2(OH)6 · 3H2O
ⓘvar. Zinc-bearing Devilline7.DD.30Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
ⓘCrocoite7.FA.20PbCr6+O4
ⓘWulfenite7.GA.05Pb(MoO4)
ⓘFerrimolybdite7.GB.30Fe2(MoO4)3 · nH2O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘMottramite8.BH.40PbCu(VO4)(OH)
ⓘSvanbergite8.BL.05SrAl3(PO4)(SO4)(OH)6
ⓘPyromorphite8.BN.05Pb5(PO4)3Cl
ⓘVanadinite8.BN.05Pb5(VO4)3Cl
Group 9 - Silicates
ⓘWillemite9.AA.05Zn2SiO4
ⓘHisingerite9.ED.10Fe3+2(Si2O5)(OH)4 · 2H2O
ⓘChrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1

List of minerals for each chemical element

HHydrogen
Hⓘ AtacamiteCu2(OH)3Cl
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ BrochantiteCu4(SO4)(OH)6
Hⓘ ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2O
Hⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hⓘ DevillineCaCu4(SO4)2(OH)6 · 3H2O
Hⓘ FerrimolybditeFe2(MoO4)3 · nH2O
Hⓘ GoethiteFe3+O(OH)
Hⓘ GoslariteZnSO4 · 7H2O
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Hⓘ JarositeKFe33+(SO4)2(OH)6
Hⓘ LeadhillitePb4(CO3)2(SO4)(OH)2
Hⓘ LepidocrociteFe3+O(OH)
Hⓘ MottramitePbCu(VO4)(OH)
Hⓘ Rosasite(Cu,Zn)2(CO3)(OH)2
Hⓘ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Hⓘ Devilline var. Zinc-bearing DevillineCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ DolomiteCaMg(CO3)2
Cⓘ LeadhillitePb4(CO3)2(SO4)(OH)2
Cⓘ Rosasite(Cu,Zn)2(CO3)(OH)2
Cⓘ SideriteFeCO3
Cⓘ SmithsoniteZnCO3
Cⓘ Dolomite var. Zinc-bearing DolomiteCa(Mg,Zn)(CO3)2
NNitrogen
Nⓘ ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2O
OOxygen
Oⓘ AnglesitePbSO4
Oⓘ AtacamiteCu2(OH)3Cl
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ BaryteBaSO4
Oⓘ BrochantiteCu4(SO4)(OH)6
Oⓘ ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2O
Oⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oⓘ CrocoitePbCr6+O4
Oⓘ CupriteCu2O
Oⓘ DevillineCaCu4(SO4)2(OH)6 · 3H2O
Oⓘ DolomiteCaMg(CO3)2
Oⓘ FerrimolybditeFe2(MoO4)3 · nH2O
Oⓘ GoethiteFe3+O(OH)
Oⓘ GoslariteZnSO4 · 7H2O
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Oⓘ JarositeKFe33+(SO4)2(OH)6
Oⓘ LeadhillitePb4(CO3)2(SO4)(OH)2
Oⓘ LepidocrociteFe3+O(OH)
Oⓘ LithargePbO
Oⓘ MassicotPbO
Oⓘ MottramitePbCu(VO4)(OH)
Oⓘ PyromorphitePb5(PO4)3Cl
Oⓘ QuartzSiO2
Oⓘ Rosasite(Cu,Zn)2(CO3)(OH)2
Oⓘ SideriteFeCO3
Oⓘ SmithsoniteZnCO3
Oⓘ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Oⓘ VanadinitePb5(VO4)3Cl
Oⓘ WillemiteZn2SiO4
Oⓘ WulfenitePb(MoO4)
Oⓘ Quartz var. Milky QuartzSiO2
Oⓘ Dolomite var. Zinc-bearing DolomiteCa(Mg,Zn)(CO3)2
Oⓘ Devilline var. Zinc-bearing DevillineCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ Dolomite var. Zinc-bearing DolomiteCa(Mg,Zn)(CO3)2
AlAluminium
Alⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alⓘ SvanbergiteSrAl3(PO4)(SO4)(OH)6
SiSilicon
Siⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Siⓘ QuartzSiO2
Siⓘ WillemiteZn2SiO4
Siⓘ Quartz var. Milky QuartzSiO2
PPhosphorus
Pⓘ PyromorphitePb5(PO4)3Cl
Pⓘ SvanbergiteSrAl3(PO4)(SO4)(OH)6
SSulfur
Sⓘ AnglesitePbSO4
Sⓘ BaryteBaSO4
Sⓘ BorniteCu5FeS4
Sⓘ BrochantiteCu4(SO4)(OH)6
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
Sⓘ DevillineCaCu4(SO4)2(OH)6 · 3H2O
Sⓘ GalenaPbS
Sⓘ GoslariteZnSO4 · 7H2O
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ JarositeKFe33+(SO4)2(OH)6
Sⓘ LeadhillitePb4(CO3)2(SO4)(OH)2
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ StromeyeriteAgCuS
Sⓘ SvanbergiteSrAl3(PO4)(SO4)(OH)6
Sⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Sⓘ Devilline var. Zinc-bearing DevillineCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
ClChlorine
Clⓘ AtacamiteCu2(OH)3Cl
Clⓘ ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2O
Clⓘ ChlorargyriteAgCl
Clⓘ PyromorphitePb5(PO4)3Cl
Clⓘ VanadinitePb5(VO4)3Cl
KPotassium
Kⓘ JarositeKFe33+(SO4)2(OH)6
CaCalcium
Caⓘ DevillineCaCu4(SO4)2(OH)6 · 3H2O
Caⓘ DolomiteCaMg(CO3)2
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ Dolomite var. Zinc-bearing DolomiteCa(Mg,Zn)(CO3)2
Caⓘ Devilline var. Zinc-bearing DevillineCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
VVanadium
Vⓘ MottramitePbCu(VO4)(OH)
Vⓘ VanadinitePb5(VO4)3Cl
CrChromium
Crⓘ CrocoitePbCr6+O4
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ FerrimolybditeFe2(MoO4)3 · nH2O
Feⓘ GoethiteFe3+O(OH)
Feⓘ HisingeriteFe23+(Si2O5)(OH)4 · 2H2O
Feⓘ JarositeKFe33+(SO4)2(OH)6
Feⓘ LepidocrociteFe3+O(OH)
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
CuCopper
Cuⓘ AtacamiteCu2(OH)3Cl
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ BorniteCu5FeS4
Cuⓘ BrochantiteCu4(SO4)(OH)6
Cuⓘ ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2O
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuⓘ CupriteCu2O
Cuⓘ Native CopperCu
Cuⓘ DevillineCaCu4(SO4)2(OH)6 · 3H2O
Cuⓘ Miersite(Ag,Cu)I
Cuⓘ MottramitePbCu(VO4)(OH)
Cuⓘ Rosasite(Cu,Zn)2(CO3)(OH)2
Cuⓘ StromeyeriteAgCuS
Cuⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
Cuⓘ Devilline var. Zinc-bearing DevillineCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
ZnZinc
Znⓘ GoslariteZnSO4 · 7H2O
Znⓘ Rosasite(Cu,Zn)2(CO3)(OH)2
Znⓘ SmithsoniteZnCO3
Znⓘ WillemiteZn2SiO4
Znⓘ Dolomite var. Zinc-bearing DolomiteCa(Mg,Zn)(CO3)2
Znⓘ Devilline var. Zinc-bearing DevillineCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
SrStrontium
Srⓘ SvanbergiteSrAl3(PO4)(SO4)(OH)6
MoMolybdenum
Moⓘ FerrimolybditeFe2(MoO4)3 · nH2O
Moⓘ MolybdeniteMoS2
Moⓘ WulfenitePb(MoO4)
AgSilver
Agⓘ ChlorargyriteAgCl
Agⓘ IodargyriteAgI
Agⓘ Miersite(Ag,Cu)I
Agⓘ StromeyeriteAgCuS
SbAntimony
Sbⓘ Tetrahedrite SubgroupCu6(Cu4C22+)Sb4S12S
IIodine
Iⓘ IodargyriteAgI
Iⓘ Miersite(Ag,Cu)I
BaBarium
Baⓘ BaryteBaSO4
AuGold
Auⓘ Native GoldAu
PbLead
Pbⓘ AnglesitePbSO4
Pbⓘ CrocoitePbCr6+O4
Pbⓘ GalenaPbS
Pbⓘ LeadhillitePb4(CO3)2(SO4)(OH)2
Pbⓘ LithargePbO
Pbⓘ MassicotPbO
Pbⓘ MottramitePbCu(VO4)(OH)
Pbⓘ PyromorphitePb5(PO4)3Cl
Pbⓘ VanadinitePb5(VO4)3Cl
Pbⓘ WulfenitePb(MoO4)

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Link to USGS MRDS:10039670

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