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Omega Mine (Omega tunnel; Omega Extension Mine), Monument Mountain, Helvetia, Helvetia-Rosemont Mining District, Pima Co., Arizona, USAi
Regional Level Types
Omega Mine (Omega tunnel; Omega Extension Mine)Mine
Monument MountainMountain
Helvetia- not defined -
Helvetia-Rosemont Mining DistrictMining District
Pima Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
31° 51' 22'' North , 110° 46' 9'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Corona de Tucson5,675 (2011)12.2km
East Sahuarita1,622 (2006)17.9km
Sahuarita25,707 (2017)20.9km
Green Valley21,391 (2011)21.2km
Vail10,208 (2011)22.0km


A former small surface and underground Cu-Ag-Pb-Zn-Au-Mn-W-Mo mine located in West-central sec. 24, T18S, R15E, on the steep southwest slope of Monument Mountain, nearly 1½ miles east of Helvetia and a ¼ mile south of the Isle Royal Mine, and a few miles south of the present-day town of Sahuarita, at about 5,100 feet of altitude. It adjoins the Isle Royal property on the SW and is comprised of the Omega and Omega Extension claims. Produced 1877-1920. Owned at times, or in part, by the Zeckendorfs (since the early 1880's); the Omega Copper Co.; and, McKay. The first Cu produced in any considerable quantity in Pima County came from this mine.

Mineralization is partly oxidized copper and minor lead-zinc minerals, largely soft and earthy, with manganese and iron oxides, and local massive chalcopyrite and pyrite, in replacement bodies with garnet-magnetite gangue along a fault zone between Paleozoic limestone and Precambrian granodiorite. Host rock units include the Martin Formation, Escabrosa Limestone, and the Horquilla Limestone. Ore control is the thrust fault zone. Alteration includes epidotization and altered limestone.

The limestone is partly mineralized, much epidotized, and otherwise altered. It is usually crystalline and near the contact diops 30ºNE. The granite for a distance of nearly 100 feet from the contact is sheared and altered and contains subordinate faults, dipping in all directions, especially to the north and to the south. At the joints occur much limonite, manganese oxide, and mica. Aplite dikes are also intruded along the contact between the granite and the limestone in places.

The ore is mostly a soft earthy mixture of copper and iron sulfides, with the manganese, copper, and iron-ore minerals of the oxidized zone. In the upper tunnel, a lens of almost pure massive pyrite and chalcopyrite, in places coated with limonite, occured. Additionally, a 2 foot wide vein of chalcopyrite and pyrite occurs in one tunnel with gouge on either wall. At the end of a drift, next to a very siliceous dike, probably an aplitic rock, a band of epidotized granite 10 feet wide occurs containing considerable pyrite and chalcopyrite.

Local structures include homoclinal, tilting and broad open folds in the south and extensive faulting in the north. WNW-striking thrust fault zone, permeable fracture zones.

Workings include 4 tunnels, a shaft, a winze, an open cut and minor openings, aggregating some 2,000 feet of workings distributed over a vertical distance of 300 feet (91.44 meters). One of the earliest mines, producing sporadically some 7,000 tons of ore averaging about 6% Cu, 1 oz. Ag/T and minor Pb from the 1880's to 1920. Produced 500,000 pounds Cu valued at $95,000 (period values)(1883).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


35 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Rolf Luetcke
Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 123.
Azurite
Formula: Cu3(CO3)2(OH)2
Habit: Blocky, tabular, terminated
Colour: Azure-blue
Fluorescence: None
Description: Exceptionally sharp crystals common in gossan cavities and fissures.
Reference: [www.johnbetts-fineminerals.com]
Brochantite
Formula: Cu4(SO4)(OH)6
Reference: Rolf Luetcke
Calcite
Formula: CaCO3
Colour: White, limonite stained.
Fluorescence: Red (SW UV)
Description: Occurs as coarsely crystalline masses with curved cleavages.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 123.
Chalcanthite
Formula: CuSO4 · 5H2O
Reference: Collected by and in the collection of Eckhard D. Stuart
Chalcopyrite
Formula: CuFeS2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 127 (Table 4); Schrader (1915): 115-117; Arizona Bureau of Mines file data.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Rolf Luetcke
Copper
Formula: Cu
Reference: Collected by and in the collection of Eckhard D. Stuart
Cuprite
Formula: Cu2O
Reference: Rolf Luetcke
Cuprotungstite
Formula: Cu2(WO4)(OH)2
Reference: Collected personally; Cuprotungstite - knowledge among local collectors
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: MRDS database Dep. ID file #10103745, MRDS ID #M050179.
Fluorite
Formula: CaF2
Reference: Rolf Luetcke
Galena
Formula: PbS
Reference: Collected by and in the collection of Eckhard D. Stuart
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: C. Lemanski, Jr. - self collected.
Goethite
Formula: α-Fe3+O(OH)
Reference: Collected personally; Cuprotungstite - knowledge among local collectors
Gypsum
Formula: CaSO4 · 2H2O
Reference: Rolf Luetcke
Hematite
Formula: Fe2O3
Reference: Rolf Luetcke
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: Rolf Luetcke
Lepidocrocite
Formula: γ-Fe3+O(OH)
Reference: Rolf Luetcke
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Rolf Luetcke
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Rolf Luetcke
Malachite
Formula: Cu2(CO3)(OH)2
Reference: [www.johnbetts-fineminerals.com]
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10103745, MRDS ID #M050179.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10103745, MRDS ID #M050179.
Opal
Formula: SiO2 · nH2O
Reference: Rolf Luetcke
Osarizawaite
Formula: Pb(Al2Cu2+)(SO4)2(OH)6
Colour: Yellow-green
Description: Microcrystalline crusts.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 319.
Plancheite
Formula: Cu8(Si8O22)(OH)4 · H2O
Reference: Rolf Luetcke
Powellite
Formula: Ca(MoO4)
Reference: MRDS database Dep. ID file #10103745, MRDS ID #M050179.
Pyrite
Formula: FeS2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 127 (Table 4); Schrader (1915): 115-117; Arizona Bureau of Mines file data.
Quartz
Formula: SiO2
Reference: Rob Lavinsky photo
Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 123, 384.
Scheelite
Formula: Ca(WO4)
Habit: Di-pyramidal
Colour: Honey-yellow, tan
Fluorescence: Blue-white (SW UV)
Description: Occurs as crystals in cavities and as specks, blebs and masses in matrix.
Reference: C. Lemanski, Jr. - self collected
Smithsonite
Formula: ZnCO3
Habit: Micro-crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 374.
Sphalerite
Formula: ZnS
Reference: MRDS database Dep. ID file #10103745, MRDS ID #M050179.
Stolzite ?
Formula: Pb(WO4)
Habit: Small (less than 1 mm)
Description: Occurs on rosasite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 384.
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Reference: Rolf Luetcke
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
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
Lepidocrocite4.FE.15γ-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aurichalcite5.BA.15(Zn,Cu)5(CO3)2(OH)6
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Rosasite5.BA.10(Cu,Zn)2(CO3)(OH)2
Smithsonite5.AB.05ZnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Brochantite7.BB.25Cu4(SO4)(OH)6
Chalcanthite7.CB.20CuSO4 · 5H2O
Cuprotungstite7.GB.15Cu2(WO4)(OH)2
Gypsum7.CD.40CaSO4 · 2H2O
Osarizawaite7.BC.10Pb(Al2Cu2+)(SO4)2(OH)6
Powellite7.GA.05Ca(MoO4)
Scheelite7.GA.05Ca(WO4)
Stolzite ?7.GA.05Pb(WO4)
Wulfenite7.GA.05Pb(MoO4)
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Plancheite9.DB.35Cu8(Si8O22)(OH)4 · H2O
Tremolite9.DE.10☐{Ca2}{Mg5}(Si8O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Garnet Group'-X3Z2(SiO4)3
'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
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
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)
Lepidocrocite6.1.2.2γ-Fe3+O(OH)
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
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
Rosasite16a.3.1.2(Cu,Zn)2(CO3)(OH)2
Aurichalcite16a.4.2.1(Zn,Cu)5(CO3)2(OH)6
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Chalcanthite29.6.7.1CuSO4 · 5H2O
Gypsum29.6.3.1CaSO4 · 2H2O
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
Osarizawaite30.2.4.4Pb(Al2Cu2+)(SO4)2(OH)6
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Powellite48.1.2.2Ca(MoO4)
Scheelite48.1.2.1Ca(WO4)
Stolzite ?48.1.3.2Pb(WO4)
Wulfenite48.1.3.1Pb(MoO4)
Basic Anhydrous Molybdates and Tungstates
Cuprotungstite48.3.2.1Cu2(WO4)(OH)2
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 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 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Tremolite66.1.3a.1☐{Ca2}{Mg5}(Si8O22)(OH)2
Amphiboles - Ca subgroup
Plancheite66.2.1.1Cu8(Si8O22)(OH)4 · 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 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
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H AzuriteCu3(CO3)2(OH)2
H MalachiteCu2(CO3)(OH)2
H Rosasite(Cu,Zn)2(CO3)(OH)2
H CuprotungstiteCu2(WO4)(OH)2
H Goethiteα-Fe3+O(OH)
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H OpalSiO2 · nH2O
H GypsumCaSO4 · 2H2O
H Limonite(Fe,O,OH,H2O)
H MuscoviteKAl2(AlSi3O10)(OH)2
H HemimorphiteZn4Si2O7(OH)2 · H2O
H Lepidocrociteγ-Fe3+O(OH)
H PlancheiteCu8(Si8O22)(OH)4 · H2O
H ChalcanthiteCuSO4 · 5H2O
H BrochantiteCu4(SO4)(OH)6
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
CCarbon
C AzuriteCu3(CO3)2(OH)2
C MalachiteCu2(CO3)(OH)2
C Rosasite(Cu,Zn)2(CO3)(OH)2
C CalciteCaCO3
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C SmithsoniteZnCO3
OOxygen
O AzuriteCu3(CO3)2(OH)2
O MalachiteCu2(CO3)(OH)2
O Rosasite(Cu,Zn)2(CO3)(OH)2
O CalciteCaCO3
O CuprotungstiteCu2(WO4)(OH)2
O ScheeliteCa(WO4)
O Goethiteα-Fe3+O(OH)
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O Garnet GroupX3Z2(SiO4)3
O SmithsoniteZnCO3
O OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O PowelliteCa(MoO4)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O QuartzSiO2
O MagnetiteFe2+Fe23+O4
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O CupriteCu2O
O OpalSiO2 · nH2O
O GypsumCaSO4 · 2H2O
O HematiteFe2O3
O Limonite(Fe,O,OH,H2O)
O WulfenitePb(MoO4)
O MuscoviteKAl2(AlSi3O10)(OH)2
O HemimorphiteZn4Si2O7(OH)2 · H2O
O Lepidocrociteγ-Fe3+O(OH)
O PlancheiteCu8(Si8O22)(OH)4 · H2O
O ChalcanthiteCuSO4 · 5H2O
O BrochantiteCu4(SO4)(OH)6
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O StolzitePb(WO4)
FFluorine
F FluoriteCaF2
MgMagnesium
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
AlAluminium
Al OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si OpalSiO2 · nH2O
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si PlancheiteCu8(Si8O22)(OH)4 · H2O
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
SSulfur
S ChalcopyriteCuFeS2
S PyriteFeS2
S OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6
S SphaleriteZnS
S GypsumCaSO4 · 2H2O
S ChalcanthiteCuSO4 · 5H2O
S GalenaPbS
S BrochantiteCu4(SO4)(OH)6
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca ScheeliteCa(WO4)
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca PowelliteCa(MoO4)
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca GypsumCaSO4 · 2H2O
Ca FluoriteCaF2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
FeIron
Fe Goethiteα-Fe3+O(OH)
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe HematiteFe2O3
Fe Limonite(Fe,O,OH,H2O)
Fe Lepidocrociteγ-Fe3+O(OH)
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu MalachiteCu2(CO3)(OH)2
Cu Rosasite(Cu,Zn)2(CO3)(OH)2
Cu CuprotungstiteCu2(WO4)(OH)2
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu ChalcopyriteCuFeS2
Cu OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6
Cu CupriteCu2O
Cu PlancheiteCu8(Si8O22)(OH)4 · H2O
Cu ChalcanthiteCuSO4 · 5H2O
Cu CopperCu
Cu BrochantiteCu4(SO4)(OH)6
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
ZnZinc
Zn Rosasite(Cu,Zn)2(CO3)(OH)2
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn SmithsoniteZnCO3
Zn SphaleriteZnS
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
MoMolybdenum
Mo PowelliteCa(MoO4)
Mo WulfenitePb(MoO4)
WTungsten
W CuprotungstiteCu2(WO4)(OH)2
W ScheeliteCa(WO4)
W StolzitePb(WO4)
PbLead
Pb OsarizawaitePb(Al2Cu2+)(SO4)2(OH)6
Pb WulfenitePb(MoO4)
Pb GalenaPbS
Pb StolzitePb(WO4)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Schrader, F. C. & J. M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 92, 115-117.
Johnson, V. H. (1941), Geology of the Helvetia mining district, Pima County, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 111 p.
Creasey, S. C. & G. L. Quick (1955), Copper deposits of part of Helvetia Mining district, Pima County, Arizona, USGS Bull. 1027-F: 315.
Arizona Bureau of Mines Field Notes (1971): 1(2).
Drewes, H. D. (1971) Geologic map of the Sahuarita quadrangle, southeast of Tucson, Pima County, Arizona: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-613, 1 sheet, scale 1:48,000.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 127 (Table 4).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 123, 319, 374, 384.
USGS Sahuarita Quadrangle topo map.
Arizona Bureau of Mines file data.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10103745, MRDS ID #M050179; and, Dep. ID #10283863
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0040190339.

USGS MRDS Record:10103745

Other Regions, Features and Areas containg this locality

North America
North America PlateTectonic Plate
USA

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