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Ajax Mine, Bell Butte area, Mineral Mountain Mining District, Pinal Co., Arizona, USAi
Regional Level Types
Ajax MineMine
Bell Butte areaArea
Mineral Mountain Mining DistrictMining District
Pinal Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
33° 12' 27'' North , 111° 11' 1'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Superior2,943 (2017)12.6km
Queen Valley788 (2011)14.1km
Gold Camp10,159 (2011)14.7km
Top-of-the-World231 (2011)23.7km
Florence31,110 (2017)27.2km


A former underground Pb-Cu-Ag-Au mine located in the SE¼ sec. 35, T2S R11E.(Mineral Mountain 7.5 minute topo map), about 2 miles NW of Bell Butte and about 3¼ miles NE of Mineral Mountain, on private land. Produced 1915-1916. Operator B.D. Johnson, Fallen (1918)(up to Ralph Pomeroy (1953)). Owner Mineral Mountain Mining and Milling Co.; Hurley New Mexico Copper Co (1925); W.C. Smith (1948).

Mineralization is a vein deposit with a tabular ore body striking N40W and dipping 60W, at 54.25 meters thick, 4.57 meters wide, and 944.88 meters long, hosted in Pinal Schist. Ore control was a N40° W-trending fissure vein. Area structures include a NNW-striking vein and fault system. The vein was mapped as a fault south of the mine. Mineralization includes secondary copper minerals. The vein reportedly contained a 2 foot wide zone of solid Galena.

Regional structures include 15.8-17.4 M.Y. Quartz latite dikes 1½ miles W of the mine.

A site visit during February, 2007, revealed a small open shaft with a vertical component approximately 30 feet (10 meters) deep, that then deviates to one side along the vein and seemingly continues downward vertically to an unknown depth. This opening is seemingly not suited to hoisting commercial quantities of ore and appears to be an exploratory shaft. The mine dump is small. A very large concrete multi-story mill foundation structure is built into the hillside on the opposite side of the wash. There are no mill tailings piles. The conditions observed support the stated short production period, or no production, reflected in the literature. NOTE: Coordinates confirmed (shaft collar) January, 2007.

Workings include many drifts and crosscuts.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


21 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: MRDS database Dep. ID #10088905, MRDS ID #M899862.
Anglesite
Formula: PbSO4
Reference: MRDS database Dep. ID #10088905, MRDS ID #M899862.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 117.
Bornite
Formula: Cu5FeS4
Reference: MRDS database Dep. ID #10088905, MRDS ID #M899862; Collected & identified by Eckhard Stuart, 2007.
Calcite
Formula: CaCO3
Reference: Mr. Eckhard Stuart.
Caledonite
Formula: Pb5Cu2(SO4)3(CO3)(OH)6
Reference: Collected by, and analyzed through, Mr. Eckhard Stuart, 2007.
Chalcopyrite
Formula: CuFeS2
Reference: Collected by Mr. Eckhard Stuart, 2007.
Chamosite
Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Reference: Collected by Mr. Eckhard Stuart, 2007.
Chlorargyrite
Formula: AgCl
Reference: MRDS database Dep. ID #10088905, MRDS ID #M899862.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Collected by Mr. Eckhard Stuart, 2007.
Covellite
Formula: CuS
Reference: Mr. Eckhard Stuart.
Cuprite
Formula: Cu2O
Description: As tiny crystals and red massive material in vein matter.
Reference: C. Lemanski, Jr. & Eckhard Stuart.
Fluorite
Formula: CaF2
Reference: Collected by Mr. Eckhard Stuart, 2007.
Galena
Formula: PbS
Reference: MRDS database Dep. ID #10088905, MRDS ID #M899862.
Goethite
Formula: α-Fe3+O(OH)
Reference: Mr. Eckhard Stuart.
Hematite
Formula: Fe2O3
Habit: Tiny, tabular
Colour: Black
Fluorescence: None.
Description: Occurs as massive silvery-black material and druses of tiny tabular crystals lining cavities in vein material. Associated with amethystine quartz.
Reference: C. Lemanski, Jr.
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: Mr. Eckhard Stuart.
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Fluorescence: Light blue (SW UV)
Description: Occurs as coatings in vein material containing sphalerite.
Reference: C. Lemanski, Jr.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Mr. Eckhard Stuart.
Quartz
Formula: SiO2
Habit: Prismatic, reverse scepters
Colour: Very pale amethystine
Fluorescence: None
Description: Occurs as crystals in cavities and as layered vein fillings.
Reference: C. Lemanski, Jr.
Quartz var: Amethyst
Formula: SiO2
Habit: Prismatic, reverse scepters
Colour: Very pale amethystine
Fluorescence: None
Description: Occurs as crystals in cavities and as layered vein fillings.
Reference: C. Lemanski, Jr.
Quartz var: Rock Crystal
Formula: SiO2
Reference: Mr. Eckhard Stuart.
Sphalerite
Formula: ZnS
Reference: MRDS database Dep. ID #10088905, MRDS ID #M899862.
Willemite
Formula: Zn2SiO4
Habit: simple prismatic hexagonal barrel-shaped crystals with {0001} terminations.
Colour: Colourless (water clear)
Fluorescence: Green (SW UV)
Description: Single crystals and groups grown in cavities in ore vein matrix.
Reference: Collected and identified by John Ebner (2007), visual ID confirmed by C. Lemanski, Jr.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Bornite2.BA.15Cu5FeS4
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Galena2.CD.10PbS
Sphalerite2.CB.05aZnS
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Rock Crystal4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Hydrozincite5.BA.15Zn5(CO3)2(OH)6
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Caledonite7.BC.50Pb5Cu2(SO4)3(CO3)(OH)6
Group 9 - Silicates
Chamosite9.EC.55(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Willemite9.AA.05Zn2SiO4
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
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
Hydrozincite16a.4.1.1Zn5(CO3)2(OH)6
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anglesite28.3.1.3PbSO4
Group 32 - COMPOUND SULFATES
Anhydrous Compound Sulfates containing Hydroxyl or Halogen
Caledonite32.3.2.1Pb5Cu2(SO4)3(CO3)(OH)6
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [4] coordination
Willemite51.1.1.2Zn2SiO4
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 interlayered 1:1, 2:1, and octahedra
Chamosite71.4.1.7(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
Quartz
var: Amethyst
-SiO2
var: Rock Crystal-SiO2

List of minerals for each chemical element

HHydrogen
H ApatiteCa5(PO4)3(Cl/F/OH)
H HydrozinciteZn5(CO3)2(OH)6
H Goethiteα-Fe3+O(OH)
H HemimorphiteZn4Si2O7(OH)2 · H2O
H MalachiteCu2(CO3)(OH)2
H CaledonitePb5Cu2(SO4)3(CO3)(OH)6
H Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
CCarbon
C CalciteCaCO3
C HydrozinciteZn5(CO3)2(OH)6
C MalachiteCu2(CO3)(OH)2
C CaledonitePb5Cu2(SO4)3(CO3)(OH)6
OOxygen
O ApatiteCa5(PO4)3(Cl/F/OH)
O Quartz (var: Amethyst)SiO2
O CupriteCu2O
O CalciteCaCO3
O AnglesitePbSO4
O HydrozinciteZn5(CO3)2(OH)6
O HematiteFe2O3
O Goethiteα-Fe3+O(OH)
O HemimorphiteZn4Si2O7(OH)2 · H2O
O MalachiteCu2(CO3)(OH)2
O Quartz (var: Rock Crystal)SiO2
O CaledonitePb5Cu2(SO4)3(CO3)(OH)6
O Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O WillemiteZn2SiO4
O QuartzSiO2
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
F FluoriteCaF2
MgMagnesium
Mg Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
AlAluminium
Al Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si Quartz (var: Rock Crystal)SiO2
Si Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si WillemiteZn2SiO4
Si QuartzSiO2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
S AnglesitePbSO4
S AcanthiteAg2S
S BorniteCu5FeS4
S GalenaPbS
S SphaleriteZnS
S CovelliteCuS
S CaledonitePb5Cu2(SO4)3(CO3)(OH)6
S ChalcopyriteCuFeS2
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
Cl ChlorargyriteAgCl
CaCalcium
Ca ApatiteCa5(PO4)3(Cl/F/OH)
Ca CalciteCaCO3
Ca FluoriteCaF2
FeIron
Fe BorniteCu5FeS4
Fe HematiteFe2O3
Fe Goethiteα-Fe3+O(OH)
Fe ChalcopyriteCuFeS2
Fe Chamosite(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
CuCopper
Cu CupriteCu2O
Cu BorniteCu5FeS4
Cu CovelliteCuS
Cu MalachiteCu2(CO3)(OH)2
Cu CaledonitePb5Cu2(SO4)3(CO3)(OH)6
Cu ChalcopyriteCuFeS2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
ZnZinc
Zn SphaleriteZnS
Zn HydrozinciteZn5(CO3)2(OH)6
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn WillemiteZn2SiO4
AgSilver
Ag AcanthiteAg2S
Ag ChlorargyriteAgCl
PbLead
Pb AnglesitePbSO4
Pb GalenaPbS
Pb CaledonitePb5Cu2(SO4)3(CO3)(OH)6

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
USGS Open File Report 78-468 (1978).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 13 (Table 1).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 117.
U.S. Bureau of Land Management District Sheet #597, SE ½ T2S, R11E.
U.S. Bureau of Mines - Arizona Bureau of Geology and Mining Technology production file data.
Arizona Department of Mineral Resources file data.
MRDS database Dep. ID #10088905, MRDS ID #M899862.

USGS MRDS Record:10088905

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