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Zortman-Landusky Mine (Zortman Mine), Little Rockies Mining District, Phillips County, Montana, USAi
| Regional Level Types | |
|---|---|
| Zortman-Landusky Mine (Zortman Mine) | Mine |
| Little Rockies Mining District | Mining District |
| Phillips County | County |
| Montana | State |
| USA | Country |
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Latitude & Longitude (WGS84):
47° North , 108° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~6km
Type:
Kรถppen climate type:
An open pit gold mine owned by Pegasus Gold, Inc.
Gold was extracted by cyanide heap-leaching.
In the Zortman deposit, mineralisation occurs predominantly at the intersection of north- and northwesttrending fractures, although there is a preferential alignment of orebodies with north-trending faults. Minor mineralisation is aligned in an ENE direction, which parallels the orientation of the Montana lineament. Hydromagmatic breccias associated with mineralisation vary from being clast dominant to matrix dominant.
Gold was extracted by cyanide heap-leaching.
In the Zortman deposit, mineralisation occurs predominantly at the intersection of north- and northwesttrending fractures, although there is a preferential alignment of orebodies with north-trending faults. Minor mineralisation is aligned in an ENE direction, which parallels the orientation of the Montana lineament. Hydromagmatic breccias associated with mineralisation vary from being clast dominant to matrix dominant.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
Mineral list contains entries from the region specified including sub-localities37 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| โ Acanthite Formula: Ag2S |
| โ Arsenopyrite Formula: FeAsS |
| โ Calaverite Formula: AuTe2 |
| โ 'Calcium Amphibole Subgroup' Formula: AnCa2(C2+5-mC3+m)(Si8-(n+m)Al(n+m))W2 |
| โ 'Calcium Amphibole Subgroup var. Hornblende' Formula: AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| โ Cervelleite Formula: Ag4TeS |
| โ Chalcopyrite Formula: CuFeS2 |
| โ 'Chlorite Group' |
| โ Corundum Formula: Al2O3 |
| โ Corundum var. Ruby Formula: Al2O3 |
| โ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| โ 'Feldspar Group' |
| โ Fluorite Formula: CaF2 |
| โ 'Freibergite Subgroup' Formula: (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1 |
| โ Galena Formula: PbS |
| โ Goethite Formula: Fe3+O(OH) |
| โ Greigite Formula: Fe2+Fe3+2S4 |
| โ Hematite Formula: Fe2O3 |
| โ Hessite Formula: Ag2Te |
| โ Jalpaite Formula: Ag3CuS2 |
| โ Jarosite Formula: KFe3+3(SO4)2(OH)6 |
| โ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| โ 'K Feldspar' |
| โ 'K Feldspar var. Adularia' Formula: KAlSi3O8 |
| โ Krennerite Formula: Au3AgTe8 |
| โ 'Leucoxene' |
| โ Marcasite Formula: FeS2 |
| โ 'Melnikovite' |
| โ Melonite Formula: NiTe2 |
| โ 'Mica Group' |
| โ Microcline Formula: K(AlSi3O8) |
| โ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| โ Muscovite var. Illite Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| โ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
| โ Native Gold Formula: Au References: |
| โ Native Silver Formula: Ag |
| โ Native Tellurium Formula: Te |
| โ Opal Formula: SiO2 · nH2O |
| โ Opal var. Opaline Formula: SiO2 · nH2O |
| โ Orthoclase Formula: K(AlSi3O8) |
| โ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 |
| โ Polybasite Formula: [Ag6Sb2S7][Ag9CuS4] |
| โ Pyrite Formula: FeS2 |
| โ Quartz Formula: SiO2 |
| โ Rickardite Formula: Cu7Te5 |
| โ Rutile Formula: TiO2 |
| โ 'Smectite Group' Formula: A0.3D2-3[T4O10]Z2 · nH2O |
| โ Sphalerite Formula: ZnS |
| โ Stromeyerite Formula: AgCuS |
| โ Stรผtzite Formula: Ag5-xTe3, x = 0.24-0.36 |
| โ Sylvanite Formula: AgAuTe4 |
| โ Tellurobismuthite Formula: Bi2Te3 |
| โ 'UM2009-//-CN:FeHKZn' Formula: (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| โ Weissite Formula: Cu2-xTe |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| โ | Native Gold | 1.AA.05 | Au |
| โ | Native Silver | 1.AA.05 | Ag |
| โ | Native Tellurium | 1.CC.10 | Te |
| Group 2 - Sulphides and Sulfosalts | |||
| โ | Rickardite | 2.BA.30 | Cu7Te5 |
| โ | Weissite | 2.BA.30 | Cu2-xTe |
| โ | Acanthite | 2.BA.35 | Ag2S |
| โ | Stromeyerite | 2.BA.40 | AgCuS |
| โ | Jalpaite | 2.BA.45 | Ag3CuS2 |
| โ | Cervelleite | 2.BA.60 | Ag4TeS |
| โ | Hessite | 2.BA.60 | Ag2Te |
| โ | Stรผtzite | 2.BA.65 | Ag5-xTe3, x = 0.24-0.36 |
| โ | Sphalerite | 2.CB.05a | ZnS |
| โ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| โ | Galena | 2.CD.10 | PbS |
| โ | Greigite | 2.DA.05 | Fe2+Fe3+2S4 |
| โ | Tellurobismuthite | 2.DC.05 | Bi2Te3 |
| โ | Sylvanite | 2.EA.05 | AgAuTe4 |
| โ | Calaverite | 2.EA.10 | AuTe2 |
| โ | Krennerite | 2.EA.15 | Au3AgTe8 |
| โ | Melonite | 2.EA.20 | NiTe2 |
| โ | Pyrite | 2.EB.05a | FeS2 |
| โ | Marcasite | 2.EB.10a | FeS2 |
| โ | Arsenopyrite | 2.EB.20 | FeAsS |
| โ | 'Freibergite Subgroup' | 2.GB.05 | (Ag6,[Ag6]4+)(Cu4 C2+2)Sb4S12S0-1 |
| โ | Polybasite | 2.GB.15 | [Ag6Sb2S7][Ag9CuS4] |
| Group 3 - Halides | |||
| โ | Fluorite | 3.AB.25 | CaF2 |
| Group 4 - Oxides and Hydroxides | |||
| โ | Corundum | 4.CB.05 | Al2O3 |
| โ | Hematite | 4.CB.05 | Fe2O3 |
| โ | Corundum var. Ruby | 4.CB.05 | Al2O3 |
| โ | Quartz | 4.DA.05 | SiO2 |
| โ | Opal | 4.DA.10 | SiO2 ยท nH2O |
| โ | var. Opaline | 4.DA.10 | SiO2 ยท nH2O |
| โ | Rutile | 4.DB.05 | TiO2 |
| โ | Goethite | 4.FD.10 | Fe3+O(OH) |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| โ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| Group 9 - Silicates | |||
| โ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| โ | Muscovite var. Illite | 9.EC.15 | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| โ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
| โ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| โ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| โ | Microcline | 9.FA.30 | K(AlSi3O8) |
| โ | Orthoclase | 9.FA.30 | K(AlSi3O8) |
| Unclassified | |||
| โ | 'K Feldspar var. Adularia' | - | KAlSi3O8 |
| โ | 'Chlorite Group' | - | |
| โ | 'Feldspar Group' | - | |
| โ | 'Calcium Amphibole Subgroup var. Hornblende' | - | AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| โ | 'Melnikovite' | - | |
| โ | 'Leucoxene' | - | |
| โ | 'Mica Group' | - | |
| โ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| โ | 'K Feldspar' | - | |
| โ | 'Smectite Group' | - | A0.3D2-3[T4O10]Z2 ยท nH2O |
| โ | 'Calcium Amphibole Subgroup' | - | AnCa2(C2+5-mC3+m)(Si8-(n+m)Al(n+m))W2 |
| โ | 'UM2009-//-CN:FeHKZn' | - | (Na,K)2Zn3[Fe(CN)6]2 ยท nH2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | โ Goethite | Fe3+O(OH) |
| H | โ Calcium Amphibole Subgroup var. Hornblende | AnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| H | โ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| H | โ Jarosite | KFe33+(SO4)2(OH)6 |
| H | โ Kaolinite | Al2(Si2O5)(OH)4 |
| H | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | โ Opal | SiO2 · nH2O |
| H | โ Opal var. Opaline | SiO2 · nH2O |
| H | โ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| H | โ Smectite Group | A0.3D2-3[T4O10]Z2 · nH2O |
| H | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| C | Carbon | |
| C | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| N | Nitrogen | |
| N | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| O | Oxygen | |
| O | โ K Feldspar var. Adularia | KAlSi3O8 |
| O | โ Corundum | Al2O3 |
| O | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | โ Goethite | Fe3+O(OH) |
| O | โ Hematite | Fe2O3 |
| O | โ Calcium Amphibole Subgroup var. Hornblende | AnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| O | โ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| O | โ Jarosite | KFe33+(SO4)2(OH)6 |
| O | โ Kaolinite | Al2(Si2O5)(OH)4 |
| O | โ Microcline | K(AlSi3O8) |
| O | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | โ Opal | SiO2 · nH2O |
| O | โ Opal var. Opaline | SiO2 · nH2O |
| O | โ Orthoclase | K(AlSi3O8) |
| O | โ Quartz | SiO2 |
| O | โ Corundum var. Ruby | Al2O3 |
| O | โ Rutile | TiO2 |
| O | โ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | โ Smectite Group | A0.3D2-3[T4O10]Z2 · nH2O |
| O | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| F | Fluorine | |
| F | โ Fluorite | CaF2 |
| F | โ Calcium Amphibole Subgroup var. Hornblende | AnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| Na | Sodium | |
| Na | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| Al | Aluminium | |
| Al | โ K Feldspar var. Adularia | KAlSi3O8 |
| Al | โ Corundum | Al2O3 |
| Al | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | โ Calcium Amphibole Subgroup var. Hornblende | AnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| Al | โ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Al | โ Kaolinite | Al2(Si2O5)(OH)4 |
| Al | โ Microcline | K(AlSi3O8) |
| Al | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | โ Orthoclase | K(AlSi3O8) |
| Al | โ Corundum var. Ruby | Al2O3 |
| Al | โ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Al | โ Calcium Amphibole Subgroup | AnCa2(C2+5-mCm3+)(Si8-(n+m)Al(n+m))W2 |
| Si | Silicon | |
| Si | โ K Feldspar var. Adularia | KAlSi3O8 |
| Si | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | โ Calcium Amphibole Subgroup var. Hornblende | AnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| Si | โ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Si | โ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | โ Microcline | K(AlSi3O8) |
| Si | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | โ Opal | SiO2 · nH2O |
| Si | โ Opal var. Opaline | SiO2 · nH2O |
| Si | โ Orthoclase | K(AlSi3O8) |
| Si | โ Quartz | SiO2 |
| Si | โ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | โ Calcium Amphibole Subgroup | AnCa2(C2+5-mCm3+)(Si8-(n+m)Al(n+m))W2 |
| S | Sulfur | |
| S | โ Acanthite | Ag2S |
| S | โ Arsenopyrite | FeAsS |
| S | โ Cervelleite | Ag4TeS |
| S | โ Chalcopyrite | CuFeS2 |
| S | โ Freibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1 |
| S | โ Galena | PbS |
| S | โ Greigite | Fe2+Fe23+S4 |
| S | โ Jalpaite | Ag3CuS2 |
| S | โ Jarosite | KFe33+(SO4)2(OH)6 |
| S | โ Marcasite | FeS2 |
| S | โ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| S | โ Pyrite | FeS2 |
| S | โ Sphalerite | ZnS |
| S | โ Stromeyerite | AgCuS |
| Cl | Chlorine | |
| Cl | โ Calcium Amphibole Subgroup var. Hornblende | AnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| K | Potassium | |
| K | โ K Feldspar var. Adularia | KAlSi3O8 |
| K | โ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| K | โ Jarosite | KFe33+(SO4)2(OH)6 |
| K | โ Microcline | K(AlSi3O8) |
| K | โ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | โ Orthoclase | K(AlSi3O8) |
| K | โ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| K | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| Ca | Calcium | |
| Ca | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | โ Fluorite | CaF2 |
| Ca | โ Calcium Amphibole Subgroup var. Hornblende | AnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2 |
| Ca | โ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ca | โ Calcium Amphibole Subgroup | AnCa2(C2+5-mCm3+)(Si8-(n+m)Al(n+m))W2 |
| Ti | Titanium | |
| Ti | โ Rutile | TiO2 |
| Fe | Iron | |
| Fe | โ Arsenopyrite | FeAsS |
| Fe | โ Chalcopyrite | CuFeS2 |
| Fe | โ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | โ Goethite | Fe3+O(OH) |
| Fe | โ Greigite | Fe2+Fe23+S4 |
| Fe | โ Hematite | Fe2O3 |
| Fe | โ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | โ Marcasite | FeS2 |
| Fe | โ Pyrite | FeS2 |
| Fe | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| Ni | Nickel | |
| Ni | โ Melonite | NiTe2 |
| Cu | Copper | |
| Cu | โ Chalcopyrite | CuFeS2 |
| Cu | โ Freibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1 |
| Cu | โ Jalpaite | Ag3CuS2 |
| Cu | โ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Cu | โ Rickardite | Cu7Te5 |
| Cu | โ Stromeyerite | AgCuS |
| Cu | โ Weissite | Cu2-xTe |
| Zn | Zinc | |
| Zn | โ Sphalerite | ZnS |
| Zn | โ UM2009-//-CN:FeHKZn | (Na,K)2Zn3[Fe(CN)6]2 · nH2O |
| As | Arsenic | |
| As | โ Arsenopyrite | FeAsS |
| Ag | Silver | |
| Ag | โ Acanthite | Ag2S |
| Ag | โ Cervelleite | Ag4TeS |
| Ag | โ Freibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1 |
| Ag | โ Hessite | Ag2Te |
| Ag | โ Jalpaite | Ag3CuS2 |
| Ag | โ Krennerite | Au3AgTe8 |
| Ag | โ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Ag | โ Native Silver | Ag |
| Ag | โ Stromeyerite | AgCuS |
| Ag | โ Stรผtzite | Ag5-xTe3, x = 0.24-0.36 |
| Ag | โ Sylvanite | AgAuTe4 |
| Sb | Antimony | |
| Sb | โ Freibergite Subgroup | (Ag6,[Ag6]4+)(Cu4 C22+)Sb4S12S0-1 |
| Sb | โ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Te | Tellurium | |
| Te | โ Calaverite | AuTe2 |
| Te | โ Cervelleite | Ag4TeS |
| Te | โ Hessite | Ag2Te |
| Te | โ Krennerite | Au3AgTe8 |
| Te | โ Melonite | NiTe2 |
| Te | โ Rickardite | Cu7Te5 |
| Te | โ Stรผtzite | Ag5-xTe3, x = 0.24-0.36 |
| Te | โ Sylvanite | AgAuTe4 |
| Te | โ Native Tellurium | Te |
| Te | โ Tellurobismuthite | Bi2Te3 |
| Te | โ Weissite | Cu2-xTe |
| Au | Gold | |
| Au | โ Calaverite | AuTe2 |
| Au | โ Native Gold | Au |
| Au | โ Krennerite | Au3AgTe8 |
| Au | โ Sylvanite | AgAuTe4 |
| Pb | Lead | |
| Pb | โ Galena | PbS |
| Bi | Bismuth | |
| Bi | โ Tellurobismuthite | Bi2Te3 |
Localities in this Region
- Montana
- Phillips County
- Little Rockies Mining District
- Zortman-Landusky Mine (Zortman Mine)
- Little Rockies Mining District
- Phillips County
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Great Falls DomainDomain
- Little Belt ArcVolcanic Arc
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