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Mission pit (Mission Mine [old]; East Pima Mine; Mission Porphyry Copper deposit), Mission complex, San Xavier, Pima District (Olive District; Mineral Hill District; Twin Buttes District), Sierrita Mts, Pima Co., Arizona, USAi
Regional Level Types
Mission pit (Mission Mine [old]; East Pima Mine; Mission Porphyry Copper deposit)Pit
Mission complexComplex
San Xavier- not defined -
Pima District (Olive District; Mineral Hill District; Twin Buttes District)Mining District
Sierrita MtsMountain Range
Pima Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
31° 59' 31'' North , 111° 3' 48'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Sahuarita25,707 (2017)10.8km
Summit5,372 (2011)13.4km
East Sahuarita1,622 (2006)13.8km
Valencia West9,355 (2011)16.3km
Green Valley21,391 (2011)16.7km


A large surface producer Cu-Ag-Zn-Mo-Pb-Au-Sn-W-Fluorspar-Cd-Sn-W-PGE mine located in East-central sec. 36, T.16S., R.12E. & West-central sec. 31, T.16S., R.13E., 17 miles S of Tucson, on private land. Discovered by geologists of ASARCO in 1953. Owned and operated by the American Smelting & Refining Corp. (ASARCO).

ASARCO geologists discovered this deposit by drilling through about 200 feet of valley gravels in 1953. By 1961, a major new open-pit mine was opened, and a mill was constructed.

Mineralization is a skarn-related copper porphyry deposit with seams and disseminations of copper carbonates and sulfides with minor zinc, lead and molybdenum minerals in a pyrometasomatic deposit in altered, complexly folded, and faulted Paleozoic limestone and Triassic sedimentary and volcanic formations intruded by Laramide and Tertiary intrusives. There is a thin secondary enrichment zone. The host rock unit is the Scherrer Formation. The ore zone is 1,609.3 meters long, 804.65 meters wide, depth to top of 60.96 meters, depth to bottom of 213.36 meters, at 152.4 meters thick, and is flat-lying. Ore control was tactite and hornfels sedimentary units, particularly limy units, less in argillite; contact of the Papago Formation with underlying Paleozoic sedimentary rocks; low-angle thrust faults. Ore concentration was hydrothermal-metasomatic fluids migrating through altered porphyry, tactite, and hornfels. Alteration includes tactite, hornfels, leaching and enrichment confined to a thin layer.

There was a 40 foot thick zone of supergene enrichment clays, malachite, native copper; oxidation occurred to about 200 feet along some faults; there was also a calcite zone 20 feet thick. Late fluorite in calcite-scheelite-galena-pyrite. PGM recovered as a by-product at the smelter. The bulk of the replacement ore occurred in garnet and pyrozene tactites. There was a 2 mile wide alteration halo.

Local structures include thrust and normal faults; an NW-trending anticline.

Discovery of this deposit was by scout drilling. Initial production rate was 15,000-20,000 tons Cu ore/day after investment of $34 million; expansion: $13.1 million. ASARCO approved spending of $94 million in February of 1989 to increase capacity at Mission and to refurbish the adjacent Pima mill and concentrator that it bought for approximately $6 million. Mill capacity: 41,000 short tons/day.

Workings are a large open pit operation overall 2,225.04 meters long, 2,194.56 meetrs wide and 301.75 meters deep. The above figures represent the merged product of the Mission, Pima, and Eisenhower Mines into a single, large open pit. Produced over 77,600,000 tons of ore from 1961 through 1972. This ore averages about 0.7% Cu, 0.13 oz. Ag/T and considerable by-product zinc, molybdenum and lead. Very little gold.

Reserve-Resource 1978 estimate excludes contribution of 31.5 million tons to the Eisenhower Mining Co. in September, 1985. ASARCO acquired the adjacent Pima property with 39 million tons of ore. It obtained another 14 million tons of reserves in April, 1987, when it bought the Eisenhower operation. In late 1987 it acquired an additional 14 million tons of reserves with the undeveloped Mineral Hill property. These purchases boosted Mission's reserves by 56%. Purchase of the Helvetica property, 15 miles east of the Mission complex, added 280 million tons of sulfide ore grading 0.6% Cu and 23 million tons at 0.8%.

Regions containing this locality

North America PlateTectonic Plate
Sonoran Desert, North AmericaDesert

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


31 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Colour: Blue-green
Description: Small veinlets, commonly 1/16 to 1 inch wide, not everywhere having a medially disposed stringer of pyrite and chalcopyrite, in hornfels, western part of the Mission orebody.
Reference: Kinnison, J.E. (1966), The Mission copper deposit, AZ, in S.R. Titley and C.L. Hicks (editors), Geology of the porphyry copper deposits, southwestern North America, Univ. AZ Press, Tucson: 285.
Andradite
Formula: Ca3Fe3+2(SiO4)3
Colour: Pale olive-green
Description: Primary constituent of tactite formed in Paleozoic limestones.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 111; Kinnison, J.E. (1966), The Mission copper deposit, AZ, in S.R. Titley and C.L. Hicks (editors), Geology of the porphyry copper deposits, southwestern North America, Univ. AZ Press, Tucson: 281-287; Richard, K. & J.H. Courtwright (1959), Some geologic features of the Mission copper deposit, in Southern Arizona Guidebook II, AZ Geol. Soc. Digest: 2: 201-204.
Anhydrite
Formula: CaSO4
Reference: ASARCO site geologist.
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
'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
Bornite
Formula: Cu5FeS4
Reference: ASARCO site geologist.
Brochantite
Formula: Cu4(SO4)(OH)6
Habit: Well-formed crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 146.
Calcite
Formula: CaCO3
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Chalcocite
Formula: Cu2S
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Chalcopyrite
Formula: CuFeS2
Description: Principal ore mineral.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 166; Richard, K. & J.H. Courtwright (1959), Some geologic features of the Mission copper deposit, in Southern Arizona Guidebook II, AZ Geol. Soc. Digest: 2: 201-204.
'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
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
'Clays'
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Copper
Formula: Cu
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185, 242.
Cubanite
Formula: CuFe2S3
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Cuprite
Formula: Cu2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185.
Cuprite var: Chalcotrichite
Formula: Cu2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 242.
Diopside
Formula: CaMgSi2O6
Description: Most abundant mineral in the hornfels host rock.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 205; Kinnison, J.E. (1966), The Mission copper deposit, AZ, in S.R. Titley and C.L. Hicks (editors), Geology of the porphyry copper deposits, southwestern North America, Univ. AZ Press, Tucson: 281-287; Richard, K. & J.H. Courtwright (1959), Some geologic features of the Mission copper deposit, in Southern Arizona Guidebook II, AZ Geol. Soc. Digest: 2: 201-204.
Dolomite
Formula: CaMg(CO3)2
Description: Occurs as micro-crystals with fluorite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 207, 224.
Fluorite
Formula: CaF2
Description: Occurs as micro-crystals with dolomite and tetrahedrite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 207, 224.
Galena
Formula: PbS
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Gypsum
Formula: CaSO4 · 2H2O
Description: Occurs as massive gypsum.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185, 242.
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Description: Occurs as colorless crystallized material enclosing copper and rarely chalcotrichite; occurs as tiny crystals lining fractures in massive anhydrite and as free-growing crystals in cavities in the marble.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185, 242.
Hematite
Formula: Fe2O3
Description: Large areas of dark-colored hematite films and stains in white marble.
Reference: ASARCO site geologist.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Magnetite
Formula: Fe2+Fe3+2O4
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Molybdenite
Formula: MoS2
Description: Large masses (to 3 feet [1 meter] diameter observed) of molybdenite in marble.
Reference: ASARCO site geologist.
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
Pyrite
Formula: FeS2
Reference: Kinnison, J.E. (1966), The Mission copper deposit, AZ, in S.R. Titley and C.L. Hicks (editors), Geology of the porphyry copper deposits, southwestern North America, Univ. AZ Press, Tucson: 285.
'Pyroxene Group'
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Scheelite
Formula: Ca(WO4)
Fluorescence: Bright light blue (SW UV).
Description: Occurs disseminated in massive anhydrite and marble.
Reference: ASARCO site geologist.
Sphalerite
Formula: ZnS
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Sphalerite var: Marmatite
Formula: (Zn,Fe)S
Colour: Black
Description: Masses of crystalline material in a matrix of snow-white wollastonite and marble.
Reference: ASARCO site geologist.
Tetrahedrite
Formula: Cu6Cu4(Fe2+,Zn)2Sb4S12S
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 224.
Tremolite
Formula: ☐{Ca2}{Mg5}(Si8O22)(OH)2
Description: Occurs in the hornfels host rock.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 402; Richard, K. & J.H. Courtwright (1959), Some geologic features of the Mission copper deposit, in Southern Arizona Guidebook II, AZ Geol. Soc. Digest: 2: 201-204.
Witherite
Formula: BaCO3
Description: Occurs as micro-crystals.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 421.
Wollastonite
Formula: CaSiO3
Colour: Snow-white
Fluorescence: Dim to medium-bright golden-yellow to orange-yellow (SW UV).
Description: Occurs as large masses hosting the ore sulfide minerals (skarn). Radial-fibrous cross-sections with sulfides in the interstitial spaces of the fibers. Also as clean, snow-white masses with associated black marmatite (most fluorescent material).
Reference: ASARCO site geologist.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Cubanite2.CB.55aCuFe2S3
Galena2.CD.10PbS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
var: Marmatite2.CB.05a(Zn,Fe)S
Tetrahedrite2.GB.05Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
var: Chalcotrichite4.AA.10Cu2O
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
Malachite5.BA.10Cu2(CO3)(OH)2
Witherite5.AB.15BaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anhydrite7.AD.30CaSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Gypsum7.CD.40CaSO4 · 2H2O
var: Selenite7.CD.40CaSO4 · 2H2O
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Andradite9.AD.25Ca3Fe3+2(SiO4)3
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Diopside9.DA.15CaMgSi2O6
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'-
'Clays'-
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-(Fe,O,OH,H2O)
'Pyroxene Group'-

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
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
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
Cubanite2.9.13.1CuFe2S3
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Tetrahedrite3.3.6.1Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
A2X3
Hematite4.3.1.2Fe2O3
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
Witherite14.1.3.2BaCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
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
Anhydrite28.3.2.1CaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
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
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Andradite51.4.3b.1Ca3Fe3+2(SiO4)3
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 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
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Clays'-
Cuprite
var: Chalcotrichite
-Cu2O
'Garnet Group'-X3Z2(SiO4)3
Gypsum
var: Selenite
-CaSO4 · 2H2O
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Pyroxene Group'-
Sphalerite
var: Marmatite
-(Zn,Fe)S

List of minerals for each chemical element

HHydrogen
H BrochantiteCu4(SO4)(OH)6
H GypsumCaSO4 · 2H2O
H Gypsum (var: Selenite)CaSO4 · 2H2O
H Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H MalachiteCu2(CO3)(OH)2
H AzuriteCu3(CO3)2(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H JarositeKFe3+ 3(SO4)2(OH)6
H Limonite(Fe,O,OH,H2O)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C DolomiteCaMg(CO3)2
C WitheriteBaCO3
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
C AzuriteCu3(CO3)2(OH)2
OOxygen
O AndraditeCa3Fe23+(SiO4)3
O BrochantiteCu4(SO4)(OH)6
O WollastoniteCaSiO3
O GypsumCaSO4 · 2H2O
O Gypsum (var: Selenite)CaSO4 · 2H2O
O CupriteCu2O
O DiopsideCaMgSi2O6
O DolomiteCaMg(CO3)2
O Cuprite (var: Chalcotrichite)Cu2O
O Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
O WitheriteBaCO3
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O AnhydriteCaSO4
O ScheeliteCa(WO4)
O HematiteFe2O3
O MagnetiteFe2+Fe23+O4
O CalciteCaCO3
O Garnet GroupX3Z2(SiO4)3
O MalachiteCu2(CO3)(OH)2
O AzuriteCu3(CO3)2(OH)2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O JarositeKFe3+ 3(SO4)2(OH)6
O Limonite(Fe,O,OH,H2O)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F FluoriteCaF2
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg DolomiteCaMg(CO3)2
Mg Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
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
AlAluminium
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si AndraditeCa3Fe23+(SiO4)3
Si WollastoniteCaSiO3
Si DiopsideCaMgSi2O6
Si Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si Garnet GroupX3Z2(SiO4)3
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S BrochantiteCu4(SO4)(OH)6
S ChalcopyriteCuFeS2
S GypsumCaSO4 · 2H2O
S Gypsum (var: Selenite)CaSO4 · 2H2O
S TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
S PyriteFeS2
S AnhydriteCaSO4
S BorniteCu5FeS4
S Sphalerite (var: Marmatite)(Zn,Fe)S
S MolybdeniteMoS2
S ChalcociteCu2S
S CubaniteCuFe2S3
S GalenaPbS
S SphaleriteZnS
S JarositeKFe3+ 3(SO4)2(OH)6
KPotassium
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K JarositeKFe3+ 3(SO4)2(OH)6
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca AndraditeCa3Fe23+(SiO4)3
Ca WollastoniteCaSiO3
Ca GypsumCaSO4 · 2H2O
Ca Gypsum (var: Selenite)CaSO4 · 2H2O
Ca DiopsideCaMgSi2O6
Ca DolomiteCaMg(CO3)2
Ca FluoriteCaF2
Ca Tremolite☐{Ca2}{Mg5}(Si8O22)(OH)2
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca AnhydriteCaSO4
Ca ScheeliteCa(WO4)
Ca CalciteCaCO3
FeIron
Fe AndraditeCa3Fe23+(SiO4)3
Fe ChalcopyriteCuFeS2
Fe TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe PyriteFeS2
Fe BorniteCu5FeS4
Fe HematiteFe2O3
Fe Sphalerite (var: Marmatite)(Zn,Fe)S
Fe CubaniteCuFe2S3
Fe MagnetiteFe2+Fe23+O4
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe JarositeKFe3+ 3(SO4)2(OH)6
Fe Limonite(Fe,O,OH,H2O)
CuCopper
Cu BrochantiteCu4(SO4)(OH)6
Cu ChalcopyriteCuFeS2
Cu CopperCu
Cu CupriteCu2O
Cu TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Cu Cuprite (var: Chalcotrichite)Cu2O
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu CubaniteCuFe2S3
Cu MalachiteCu2(CO3)(OH)2
Cu AzuriteCu3(CO3)2(OH)2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
ZnZinc
Zn TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Zn Sphalerite (var: Marmatite)(Zn,Fe)S
Zn SphaleriteZnS
MoMolybdenum
Mo MolybdeniteMoS2
SbAntimony
Sb TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
BaBarium
Ba WitheriteBaCO3
WTungsten
W ScheeliteCa(WO4)
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Richard, K.E. & Courtright, J.H. (1959), Some geologic features of the Mission copper deposit, in Southern Arizona Guidebook II, Arizona Geological Society Digest: 2: 201-204.
Cooper, J.R. (1960) Some geologic features of the Pima mining district, Pima County, Arizona: U.S. Geological Survey Bulletin 1112-C, p. 63-103, 1 sheet, scale 1:31,680.
Skillings Mine Review (1961, 1962).
Argall, George D., Jr. (1962) ASARCO’s Mission Copper. Mining World: 24(1): 19-42.
Engineering & Mining Journal (1962).
Gale, R.E. (1965) Geology of the Mission copper mine, Pima mining district, Arizona: Stanford, Stanford University, Ph.D. dissertation, 176 p.
Kinnison, J.E. (1966), The Mission copper deposit, Arizona, in S.R. Titley and C.L. Hicks (editors), Geology of the porphyry copper deposits, southwestern North America, University of Arizona Press, Tucson: 281-287.
World Mining (1972) Pima Mining Five Year Ore production and Copper Sales, Mining World: January 1972: 57.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mining Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 136 (Table 4).
Niemuth, N.J. (1987), Arizona Mineral Development 1984-1986, Arizona Department of Mines & Mineral Resources Directory 29, 46 pp.
Dayton, S.H. (1988) Mission Today, Trim, Efficient, and in Third-Stage Growth. Engineering and Mining Journal: 189(9): 35-41.
Walenga, Karen (1989) Mission, Ray Expansion to Assure Copper Feed: Overall project will reduce need for outside sources, cut costs. Southwestern Paydirt, March, 1989: 4A-8A.
Carter, Russell A. (1992) Expansion Almost Complete at Arizona’s Mission and Morenci Mines. Engineering and Mining Journal, 2/92: C14-C16.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 111, 146, 166, 185, 205, 207, 224, 242, 402, 421.
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.
USGS Twin Buttes Quadrangle topo map.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10111429, MRDS ID #M050387; and, Dep. ID #10234710, MAS ID #0040190317.

USGS MRDS Record:10111429

External Links



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