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Silver Bell Mine, Mineral Mountain, Silver Bell Mining District, Silver Bell Mts, Pima Co., Arizona, USAi
Regional Level Types
Silver Bell MineMine
Mineral MountainMountain
Silver Bell Mining DistrictMining District
Silver Bell MtsMountain Range
Pima Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
32° 24' North , 111° 30' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Avra Valley6,050 (2011)17.8km
Nelson259 (2011)21.9km
Picture Rocks9,563 (2011)24.6km
Red Rock169 (2011)25.5km
Marana41,315 (2017)26.1km


A Cu-Ag-Mo-Au mine located in the NW ¼ sec. 4 & the center of sec. 11, T.12S., R.8E. (Vaca Hills 15 minute topo map). Discovered 1909. First produced 1954. Owned by the American Smelting & Refining Co. (ASARCO). This mine is the open pit continuance of the former El Tiro and Oxide underground mines.

Mineralization is supergene enriched deposits of chalcocite with minor copper carbonates and silicates derived from sheeted, closely spaced, veinlets and seams of quartz, pyrite, chalcopyrite, and minor molybdenite in hydrothermally altered Laramide dacite porphyry and monzonite.

Workings include two open pit operations since 1954. Up through 1972, production has been some 59,800,000 million tons of ore averaging about 0.8% Cu, 0.06 oz. Ag/T, 0.004% Mo, and minor Au & Pb.

Regions containing this locality

North America PlateTectonic Plate
Sonoran Desert, North AmericaDesert

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

49 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Allophane
Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Reference: Rolf Luetcke
Alunite
Formula: KAl3(SO4)2(OH)6
Aragonite
Formula: CaCO3
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 118.
Azurite
Formula: Cu3(CO3)2(OH)2
Description: In orebodies in limestone.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 126, 286; Engineering Mining Jour. (1904), The3 Silverbell Camp, AZ: 77: 639.
Baryte
Formula: BaSO4
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 128.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Brochantite
Formula: Cu4(SO4)(OH)6
Habit: Micro crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 147.
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Calcite
Formula: CaCO3
Reference: Rolf Luetcke
Caledonite
Formula: Pb5Cu2(SO4)3(CO3)(OH)6
Reference: Rolf Luetcke
Cerussite
Formula: PbCO3
Description: As silky crystals & as earthy mixtures with smithsonite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 158; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 50.
Chalcanthite
Formula: CuSO4 · 5H2O
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Chalcocite
Formula: Cu2S
Chalcopyrite
Formula: CuFeS2
Reference: No reference listed
Chlorargyrite
Formula: AgCl
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 158.
'Chlorite Group'
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Colour: Emerald-green
Description: Clear, emerald-green material.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 174; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 110.
Copper
Formula: Cu
Cuprite
Formula: Cu2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 126, 286; Engineering Mining Jour. (1904), The3 Silverbell Camp, AZ: 77: 639.
Diopside
Formula: CaMgSi2O6
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Epsomite
Formula: MgSO4 · 7H2O
Habit: Capillary, acicualr
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 216; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 61.
'Feldspar Group'
Reference: Rolf Luetcke
Fluorite
Formula: CaF2
Reference: Rolf Luetcke
Galena
Formula: PbS
Reference: Rolf Luetcke
'Garnet Group'
Formula: X3Z2(SiO4)3
Goethite
Formula: α-Fe3+O(OH)
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Gypsum
Formula: CaSO4 · 2H2O
Reference: Rolf Luetcke
Halloysite-10Å
Formula: Al2Si2O5(OH)4 · 2H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 213.
Hematite
Formula: Fe2O3
Reference: Rolf Luetcke
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Kaolinite
Formula: Al2(Si2O5)(OH)4
Description: Occurs as large masses in wall rocks in upper levels.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 266; Kerr, P.F. (1951), Alteration features at Silverbell, AZ, Geol. Soc. Amer. Bull.: 62: 451-480; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 108.
Leucosphenite
Formula: BaNa4Ti2B2Si10O30
Habit: Micro-crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 276; Roe, A. (1980), Micromounting in AZ, Min.Rec.: 11: 261-265.
Libethenite
Formula: Cu2(PO4)(OH)
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 277.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: MRDS database Dep. ID file #10039684, MRDS ID #M050650.
Lizardite
Formula: Mg3(Si2O5)(OH)4
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 280.
Malachite
Formula: Cu2(CO3)(OH)2
Description: In limestone replacements.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 126, 286; Stewart, C.A. (1912)The geology and ore deposits of the Silverbell mining district, AZ, AIME Bull. 65: 455-505 (AIME Transactions, Vol. 43: 240-290; Engineering Mining Jour. (1904), The3 Silverbell Camp, AZ: 77: 639.
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Description: Occurs in small amounts.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 61; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 292.
Melanterite var: Cuprian Melanterite
Formula: (Fe,Cu)SO4 · 7H2O
Description: Occurs in small amounts.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 61; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 292.
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Habit: Micro-crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 296.
Molybdenite
Formula: MoS2
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Opal
Formula: SiO2 · nH2O
Description: Veinlets in the oxidized zone with jarosite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 193; Kerr, P.F. (1951), Alteration features at Silverbell, AZ, Geol. Soc. Amer. Bull.: 62: 451-480; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 87.
Pseudomalachite
Formula: Cu5(PO4)2(OH)4
Habit: Micro-crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 337.
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Colour: Emerald-green
Description: Occurs as clear, nearly transparent material of beautiful color.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 85.
Quartz var: Chalcedony
Formula: SiO2
Colour: Emerald-green
Description: Occurs as clear, nearly transparent material of beautiful color.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 85.
Smithsonite
Formula: ZnCO3
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 50.
Sphalerite
Formula: ZnS
Reference: Rolf Luetcke
Tenorite
Formula: CuO
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Rolf Luetcke
Turquoise
Formula: Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Wollastonite
Formula: CaSiO3
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Wulfenite
Formula: Pb(MoO4)
Reference: Rolf Luetcke

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
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
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Tenorite4.AB.10CuO
Group 5 - Nitrates and Carbonates
Aragonite5.AB.15CaCO3
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Cerussite5.AB.15PbCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Smithsonite5.AB.05ZnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Alunite7.BC.10KAl3(SO4)2(OH)6
Baryte7.AD.35BaSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Caledonite7.BC.50Pb5Cu2(SO4)3(CO3)(OH)6
Chalcanthite7.CB.20CuSO4 · 5H2O
Epsomite7.CB.40MgSO4 · 7H2O
Gypsum7.CD.40CaSO4 · 2H2O
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Melanterite7.CB.35Fe2+(H2O)6SO4 · H2O
var: Cuprian Melanterite7.CB.35(Fe,Cu)SO4 · 7H2O
Wulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
Cacoxenite8.DC.40Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Libethenite8.BB.30Cu2(PO4)(OH)
Metatorbernite8.EB.10Cu(UO2)2(PO4)2 · 8H2O
Pseudomalachite8.BD.05Cu5(PO4)2(OH)4
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Turquoise8.DD.15Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Allophane9.ED.20(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Diopside9.DA.15CaMgSi2O6
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Leucosphenite9.DP.15BaNa4Ti2B2Si10O30
Lizardite9.ED.15Mg3(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Wollastonite9.DG.05CaSiO3
Unclassified Minerals, Rocks, etc.
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
Halloysite-10Å-Al2Si2O5(OH)4 · 2H2O
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
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
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX
Tenorite4.2.3.1CuO
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
Cerussite14.1.3.4PbCO3
Smithsonite14.1.1.6ZnCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Chalcanthite29.6.7.1CuSO4 · 5H2O
Epsomite29.6.11.1MgSO4 · 7H2O
Gypsum29.6.3.1CaSO4 · 2H2O
Melanterite29.6.10.1Fe2+(H2O)6SO4 · H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Brochantite30.1.3.1Cu4(SO4)(OH)6
(AB)2(XO4)Zq
Alunite30.2.4.1KAl3(SO4)2(OH)6
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 32 - COMPOUND SULFATES
Anhydrous Compound Sulfates containing Hydroxyl or Halogen
Caledonite32.3.2.1Pb5Cu2(SO4)3(CO3)(OH)6
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Metatorbernite40.2a.13.2Cu(UO2)2(PO4)2 · 8H2O
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)2Zq
Pseudomalachite41.4.3.1Cu5(PO4)2(OH)4
A2(XO4)Zq
Libethenite41.6.6.2Cu2(PO4)(OH)
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)7(XO4)4Zq·xH2O
Turquoise42.9.3.1Cu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Miscellaneous
Cacoxenite42.13.5.1Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Wulfenite48.1.3.1Pb(MoO4)
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 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Diopside65.1.3a.1CaMgSi2O6
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 1:1 layers
Allophane71.1.5.1(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Lizardite71.1.2b.2Mg3(Si2O5)(OH)4
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with corrugated and complex layers
Leucosphenite72.5.2.1BaNa4Ti2B2Si10O30
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
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Aragonite-CaCO3
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Feldspar Group'-
'Garnet Group'-X3Z2(SiO4)3
Halloysite-10Å-Al2Si2O5(OH)4 · 2H2O
Kaolinite-Al2(Si2O5)(OH)4
'Limonite'-(Fe,O,OH,H2O)
Melanterite
var: Cuprian Melanterite
-(Fe,Cu)SO4 · 7H2O
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
Quartz
var: Chalcedony
-SiO2

List of minerals for each chemical element

HHydrogen
H Halloysite-10ÅAl2Si2O5(OH)4 · 2H2O
H BrochantiteCu4(SO4)(OH)6
H LizarditeMg3(Si2O5)(OH)4
H TorberniteCu(UO2)2(PO4)2 · 12H2O
H CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
H TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
H Melanterite (var: Cuprian Melanterite)(Fe,Cu)SO4 · 7H2O
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H EpsomiteMgSO4 · 7H2O
H KaoliniteAl2(Si2O5)(OH)4
H AluniteKAl3(SO4)2(OH)6
H JarositeKFe3+ 3(SO4)2(OH)6
H PseudomalachiteCu5(PO4)2(OH)4
H AzuriteCu3(CO3)2(OH)2
H MalachiteCu2(CO3)(OH)2
H OpalSiO2 · nH2O
H LibetheniteCu2(PO4)(OH)
H MetatorberniteCu(UO2)2(PO4)2 · 8H2O
H Limonite(Fe,O,OH,H2O)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H ChalcanthiteCuSO4 · 5H2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Goethiteα-Fe3+O(OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MelanteriteFe2+(H2O)6SO4 · H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H GypsumCaSO4 · 2H2O
H CaledonitePb5Cu2(SO4)3(CO3)(OH)6
BBoron
B LeucospheniteBaNa4Ti2B2Si10O30
CCarbon
C CerussitePbCO3
C SmithsoniteZnCO3
C AragoniteCaCO3
C AzuriteCu3(CO3)2(OH)2
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
C CaledonitePb5Cu2(SO4)3(CO3)(OH)6
OOxygen
O Halloysite-10ÅAl2Si2O5(OH)4 · 2H2O
O Garnet GroupX3Z2(SiO4)3
O BrochantiteCu4(SO4)(OH)6
O CerussitePbCO3
O LizarditeMg3(Si2O5)(OH)4
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
O TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
O SmithsoniteZnCO3
O Melanterite (var: Cuprian Melanterite)(Fe,Cu)SO4 · 7H2O
O Quartz (var: Chalcedony)SiO2
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O EpsomiteMgSO4 · 7H2O
O KaoliniteAl2(Si2O5)(OH)4
O AluniteKAl3(SO4)2(OH)6
O JarositeKFe3+ 3(SO4)2(OH)6
O PseudomalachiteCu5(PO4)2(OH)4
O AragoniteCaCO3
O AzuriteCu3(CO3)2(OH)2
O CupriteCu2O
O MalachiteCu2(CO3)(OH)2
O BaryteBaSO4
O OpalSiO2 · nH2O
O LeucospheniteBaNa4Ti2B2Si10O30
O LibetheniteCu2(PO4)(OH)
O MetatorberniteCu(UO2)2(PO4)2 · 8H2O
O Limonite(Fe,O,OH,H2O)
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O ChalcanthiteCuSO4 · 5H2O
O DiopsideCaMgSi2O6
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Goethiteα-Fe3+O(OH)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O TenoriteCuO
O WollastoniteCaSiO3
O MelanteriteFe2+(H2O)6SO4 · H2O
O QuartzSiO2
O MuscoviteKAl2(AlSi3O10)(OH)2
O Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
O CalciteCaCO3
O HematiteFe2O3
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O WulfenitePb(MoO4)
O GypsumCaSO4 · 2H2O
O CaledonitePb5Cu2(SO4)3(CO3)(OH)6
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F FluoriteCaF2
NaSodium
Na LeucospheniteBaNa4Ti2B2Si10O30
MgMagnesium
Mg LizarditeMg3(Si2O5)(OH)4
Mg EpsomiteMgSO4 · 7H2O
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Mg DiopsideCaMgSi2O6
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al Halloysite-10ÅAl2Si2O5(OH)4 · 2H2O
Al CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Al TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al KaoliniteAl2(Si2O5)(OH)4
Al AluniteKAl3(SO4)2(OH)6
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
SiSilicon
Si Halloysite-10ÅAl2Si2O5(OH)4 · 2H2O
Si Garnet GroupX3Z2(SiO4)3
Si LizarditeMg3(Si2O5)(OH)4
Si Quartz (var: Chalcedony)SiO2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si KaoliniteAl2(Si2O5)(OH)4
Si OpalSiO2 · nH2O
Si LeucospheniteBaNa4Ti2B2Si10O30
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si DiopsideCaMgSi2O6
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si WollastoniteCaSiO3
Si QuartzSiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
PPhosphorus
P TorberniteCu(UO2)2(PO4)2 · 12H2O
P CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
P TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
P PseudomalachiteCu5(PO4)2(OH)4
P LibetheniteCu2(PO4)(OH)
P MetatorberniteCu(UO2)2(PO4)2 · 8H2O
SSulfur
S ChalcopyriteCuFeS2
S BrochantiteCu4(SO4)(OH)6
S ChalcociteCu2S
S Melanterite (var: Cuprian Melanterite)(Fe,Cu)SO4 · 7H2O
S EpsomiteMgSO4 · 7H2O
S AluniteKAl3(SO4)2(OH)6
S JarositeKFe3+ 3(SO4)2(OH)6
S BaryteBaSO4
S MolybdeniteMoS2
S PyriteFeS2
S ChalcanthiteCuSO4 · 5H2O
S MelanteriteFe2+(H2O)6SO4 · H2O
S GalenaPbS
S SphaleriteZnS
S GypsumCaSO4 · 2H2O
S CaledonitePb5Cu2(SO4)3(CO3)(OH)6
ClChlorine
Cl ChlorargyriteAgCl
KPotassium
K AluniteKAl3(SO4)2(OH)6
K JarositeKFe3+ 3(SO4)2(OH)6
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca AragoniteCaCO3
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca DiopsideCaMgSi2O6
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca WollastoniteCaSiO3
Ca CalciteCaCO3
Ca FluoriteCaF2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca GypsumCaSO4 · 2H2O
TiTitanium
Ti LeucospheniteBaNa4Ti2B2Si10O30
FeIron
Fe ChalcopyriteCuFeS2
Fe CacoxeniteFe243+AlO6(PO4)17(OH)12 · 75H2O
Fe TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Fe Melanterite (var: Cuprian Melanterite)(Fe,Cu)SO4 · 7H2O
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Goethiteα-Fe3+O(OH)
Fe MelanteriteFe2+(H2O)6SO4 · H2O
Fe HematiteFe2O3
CuCopper
Cu ChalcopyriteCuFeS2
Cu BrochantiteCu4(SO4)(OH)6
Cu ChalcociteCu2S
Cu CopperCu
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
Cu TurquoiseCu(Al,Fe3+)6(PO4)4(OH)8 · 4H2O
Cu Melanterite (var: Cuprian Melanterite)(Fe,Cu)SO4 · 7H2O
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu PseudomalachiteCu5(PO4)2(OH)4
Cu AzuriteCu3(CO3)2(OH)2
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
Cu LibetheniteCu2(PO4)(OH)
Cu MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Cu ChalcanthiteCuSO4 · 5H2O
Cu TenoriteCuO
Cu CaledonitePb5Cu2(SO4)3(CO3)(OH)6
ZnZinc
Zn SmithsoniteZnCO3
Zn SphaleriteZnS
MoMolybdenum
Mo MolybdeniteMoS2
Mo WulfenitePb(MoO4)
AgSilver
Ag ChlorargyriteAgCl
BaBarium
Ba BaryteBaSO4
Ba LeucospheniteBaNa4Ti2B2Si10O30
PbLead
Pb CerussitePbCO3
Pb GalenaPbS
Pb WulfenitePb(MoO4)
Pb CaledonitePb5Cu2(SO4)3(CO3)(OH)6
UUranium
U TorberniteCu(UO2)2(PO4)2 · 12H2O
U MetatorberniteCu(UO2)2(PO4)2 · 8H2O

Geochronology

Mineralization age: Paleocene : 63.5 Ma to 62.9 Ma

Important note: This table is based only on rock and mineral ages recorded below and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Paleocene
ⓘ Molybdenite (youngest age)62.9 Ma
ⓘ Molybdenite (oldest age)63.5 Ma

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Engineering Mining Journal (1904), The Silverbell Camp, Arizona: 77: 639.
Stewart, C.A. (1912) The geology and ore deposits of the Silverbell mining district, Arizona, A.I.M.E. Bull. 65: 455-505 (A.I.M.E. Transactions, Vol. 43: 240-290.
Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 9.
Kerr, P.F. (1951), Alteration features at Silverbell, Arizona, Geological Society of America Bull.: 62: 451-480.
Huttl, John B. (1954) Silver Bell ASARCO’s New Arizona Copper project starts production, Engineering & Mining Journal: 155(7): 72-79.
Richard, K.E. & J.H. Courtright (1954), Structure & Mineralization at Silver Bell, Arizona, Mining Engineering, Vol. 6(11): 1095-1099 (A.I.M.E. Transactions, 1954 - Vol. 199 (1955).
Mining World (1958) Silver Bell - ASARCO Makes a Mine at a Known Deposit: April, 1958: 40-45.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 87.
Hardwick, W.R. (1963) Open-pit copper mining and concentrating methods and costs, Silver Bell unit, American Smelting and Refining Co., Pima County, Arizona: U.S. Bureau of Mines Information Circular I.C. 8153, 72 p.
Richard, K.E. & J.H. Courtright (1966), Structure & Mineralization at Silver Bell, Arizona, in Titley, S.R. and Hicks, C.L., eds., Geology of the porphyry copper deposits, southwestern North America: 157-163 (University of Arizona Press).
Watson, Barry N. (1968) Updating the Geology and Structural Ore Controls at Silver Bell, Arizona, presented at the Arizona A.I.M.E. Spring Meeting, Mining Geology Division, May 20, 1968, 11 pp.
Skillings, David N., Jr. (1970) ASARCO’s Silver Bell Unit, Skillings Mining Review, July 25, 1970: 3-5.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 143 (Table 4).
Roe, A. (1980), Micromounting in Arizona, Mineralogical Record: 11: 261-265.
Graybeal, F.T. (1982) Geology of the El Tiro area, Silver Bell mining district, Pima County, Arizona, in Titley, S.R., ed., Advances in geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 487-505.
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.: 107, 118, 126, 128, 193, 213, 262, 276, 277, 286, 296.
Singer, D.A., Berger, V.I., and Moring, B.C. (2005): Porphyry Copper Deposits of the World: Database, Map, and Grade and Tonnage Models. USGS Open-File Report 05-1060.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10161929, MRDS ID #D000333, MAS ID #0040190009.

USGS MRDS Record:10161929

Localities in this Region


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