Summitville Mining District (Summit Mining District), Colorado, USAi
| Regional Level Types | |
|---|---|
| Summitville Mining District (Summit Mining District) | Mining District |
| Colorado | State |
| USA | Country |
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Latitude & Longitude (WGS84):
37° North , 106° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~16km
Type:
Köppen climate type:
The Summitville District is localized in a volcanic dome at the margin of the nested Summitville and Platoro calderas. The country rock is largely quartz latite. Mineral deposition occurred largely in fissure veins and acid-sulphate leached breccias. The geology and ore deposits are discussed in detail by Bethke, et al (2005). On a district wide basis multiple episodes of mining, exploration and mapping have provided a picture of most of the vertical extent of the hydrothermal plumbing system from porphyry stockwork mineralization at depth through shallow base metal-gold deposits to surficial siliceous sinter.
The initial mining in the district focused on base metal sulphide-barite veins that contained significant gold values. In the mid 1970's ASARCO did exploration in the district. Two deep drill holes intersected a quartz monzonite porphyry with very low grade stockwork copper-molybdenum mineralization. It also outlined the low grade gold orebody that was later mined by open pit.
During this phase of work in the district an equipment operator saw a yellow glint coming from a rock just off the side of the road. That rock weighed about 141 pounds, contains an estimated 350 ounces of gold and became known as "the gold boulder of Summitville". It is now in the Denver Museum of Natural History. The rock was a float boulder from one of the sulphide-barite veins and seems to have been hidden in plain sight for decades.
The low-grade gold ore body was mined from 1986 to 1991.
The initial mining in the district focused on base metal sulphide-barite veins that contained significant gold values. In the mid 1970's ASARCO did exploration in the district. Two deep drill holes intersected a quartz monzonite porphyry with very low grade stockwork copper-molybdenum mineralization. It also outlined the low grade gold orebody that was later mined by open pit.
During this phase of work in the district an equipment operator saw a yellow glint coming from a rock just off the side of the road. That rock weighed about 141 pounds, contains an estimated 350 ounces of gold and became known as "the gold boulder of Summitville". It is now in the Denver Museum of Natural History. The rock was a float boulder from one of the sulphide-barite veins and seems to have been hidden in plain sight for decades.
The low-grade gold ore body was mined from 1986 to 1991.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities51 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:
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Alunite Formula: KAl3(SO4)2(OH)6 |
| ⓘ Anorthite Formula: Ca(Al2Si2O8) |
| ⓘ 'Apatite' Formula: Ca5(PO4)3A |
| ⓘ Baryte Formula: BaSO4 |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ Brochantite Formula: Cu4(SO4)(OH)6 |
| ⓘ Brookite Formula: TiO2 |
| ⓘ Calcite Formula: CaCO3 |
| ⓘ Chalcanthite Formula: CuSO4 · 5H2O |
| ⓘ Chalcocite Formula: Cu2S |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ 'Chlorite Group' |
| ⓘ Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 |
| ⓘ Clinochlore var. Pennine Formula: Mg5Al(AlSi3O10)(OH)8 |
| ⓘ Copiapite Formula: Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
| ⓘ Covellite Formula: CuS Localities: Reported from at least 7 localities in this region. |
| ⓘ Cristobalite Formula: SiO2 |
| ⓘ Dickite Formula: Al2(Si2O5)(OH)4 |
| ⓘ Digenite Formula: Cu9S5 |
| ⓘ Diopside Formula: CaMgSi2O6 |
| ⓘ Enargite Formula: Cu3AsS4 Localities: Reported from at least 6 localities in this region. |
| ⓘ Epidote Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ Epsomite Formula: MgSO4 · 7H2O |
| ⓘ Famatinite Formula: Cu3SbS4 |
| ⓘ Galena Formula: PbS Localities: Summitville Mine, Summitville, Rio Grande County, Colorado, USA Aztec Mine, Summitville Mine, Summitville, Rio Grande County, Colorado, USA Golconda Mine, South Mountain, Rio Grande County, Colorado, USA Alum Creek Property, Rio Grande County, Colorado, USA Tunnel No. 2 claim, Rio Grande County, Colorado, USA |
| ⓘ Goethite Formula: Fe3+O(OH) |
| ⓘ Hematite Formula: Fe2O3 |
| ⓘ Hinsdalite Formula: PbAl3(PO4)(SO4)(OH)6 |
| ⓘ 'Hypersthene' Formula: (Mg,Fe)SiO3 |
| ⓘ Ilmenite Formula: Fe2+TiO3 |
| ⓘ Jarosite Formula: KFe3+3(SO4)2(OH)6 |
| ⓘ Kaolinite Formula: Al2(Si2O5)(OH)4 |
| ⓘ 'Limonite' |
| ⓘ Luzonite Formula: Cu3AsS4 Localities: |
| ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
| ⓘ Marcasite Formula: FeS2 |
| ⓘ Molybdenite Formula: MoS2 |
| ⓘ Montmorillonite Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Illite Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Native Gold Formula: Au Localities: Reported from at least 8 localities in this region. |
| ⓘ Native Gold var. Electrum Formula: (Au,Ag) |
| ⓘ Native Sulphur Formula: S8 |
| ⓘ Natroalunite Formula: NaAl3(SO4)2(OH)6 |
| ⓘ Orthoclase Formula: K(AlSi3O8) |
| ⓘ Polybasite Formula: [Ag6Sb2S7][Ag9CuS4] |
| ⓘ Posnjakite Formula: Cu4(SO4)(OH)6 · H2O |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrophyllite Formula: Al2Si4O10(OH)2 |
| ⓘ Quartz Formula: SiO2 Localities: Reported from at least 6 localities in this region. |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
| ⓘ Rutile Formula: TiO2 |
| ⓘ Sanidine Formula: K(AlSi3O8) |
| ⓘ Sphalerite Formula: ZnS Localities: Summitville Mine, Summitville, Rio Grande County, Colorado, USA Aztec Mine, Summitville Mine, Summitville, Rio Grande County, Colorado, USA Golconda Mine, South Mountain, Rio Grande County, Colorado, USA Alum Creek Property, Rio Grande County, Colorado, USA Tunnel No. 2 claim, Rio Grande County, Colorado, USA |
| ⓘ Svanbergite Formula: SrAl3(PO4)(SO4)(OH)6 References: |
| ⓘ 'Tennantite Subgroup' Formula: Cu6(Cu4C2+2)As4S12S |
| ⓘ Turquoise Formula: CuAl6(PO4)4(OH)8 · 4H2O |
| ⓘ Woodhouseite Formula: CaAl3(PO4)(SO4)(OH)6 |
| ⓘ Zincobotryogen Formula: (Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O |
| ⓘ Zircon Formula: Zr(SiO4) |
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold var. Electrum | 1.AA.05 | (Au,Ag) |
| ⓘ | 1.AA.05 | Au | |
| ⓘ | Native Sulphur | 1.CC.05 | S8 |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Chalcocite | 2.BA.05 | Cu2S |
| ⓘ | Digenite | 2.BA.10 | Cu9S5 |
| ⓘ | Covellite | 2.CA.05a | CuS |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| ⓘ | 'Tennantite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)As4S12S |
| ⓘ | Polybasite | 2.GB.15 | [Ag6Sb2S7][Ag9CuS4] |
| ⓘ | Enargite | 2.KA.05 | Cu3AsS4 |
| ⓘ | Famatinite | 2.KA.10 | Cu3SbS4 |
| ⓘ | Luzonite | 2.KA.10 | Cu3AsS4 |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Goethite | 4.00. | Fe3+O(OH) |
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Hematite | 4.CB.05 | Fe2O3 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| ⓘ | Cristobalite | 4.DA.15 | SiO2 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| ⓘ | Brookite | 4.DD.10 | TiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Baryte | 7.AD.35 | BaSO4 |
| ⓘ | Brochantite | 7.BB.25 | Cu4(SO4)(OH)6 |
| ⓘ | Alunite | 7.BC.10 | KAl3(SO4)2(OH)6 |
| ⓘ | Jarosite | 7.BC.10 | KFe3+3(SO4)2(OH)6 |
| ⓘ | Natroalunite | 7.BC.10 | NaAl3(SO4)2(OH)6 |
| ⓘ | Chalcanthite | 7.CB.20 | CuSO4 · 5H2O |
| ⓘ | Epsomite | 7.CB.40 | MgSO4 · 7H2O |
| ⓘ | Copiapite | 7.DB.35 | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O |
| ⓘ | Zincobotryogen | 7.DC.25 | (Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O |
| ⓘ | Posnjakite | 7.DD.10 | Cu4(SO4)(OH)6 · H2O |
| Group 8 - Phosphates, Arsenates and Vanadates | |||
| ⓘ | Hinsdalite | 8.BL.05 | PbAl3(PO4)(SO4)(OH)6 |
| ⓘ | Svanbergite | 8.BL.05 | SrAl3(PO4)(SO4)(OH)6 |
| ⓘ | Woodhouseite | 8.BL.05 | CaAl3(PO4)(SO4)(OH)6 |
| ⓘ | Turquoise | 8.DD.15 | CuAl6(PO4)4(OH)8 · 4H2O |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Pyrophyllite | 9.EC.10 | Al2Si4O10(OH)2 |
| ⓘ | Muscovite var. Illite | 9.EC.15 | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| ⓘ | 9.EC.15 | KAl2(AlSi3O10)(OH)2 | |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Montmorillonite | 9.EC.40 | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| ⓘ | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | var. Pennine | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
| ⓘ | Dickite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| ⓘ | Kaolinite | 9.ED.05 | Al2(Si2O5)(OH)4 |
| ⓘ | Orthoclase | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Sanidine | 9.FA.30 | K(AlSi3O8) |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| ⓘ | Anorthite | 9.FA.35 | Ca(Al2Si2O8) |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Hypersthene' | - | (Mg,Fe)SiO3 |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Apatite' | - | Ca5(PO4)3A |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| H | ⓘ Chalcanthite | CuSO4 · 5H2O |
| H | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| H | ⓘ Copiapite | Fe2+Fe43+(SO4)6(OH)2 · 20H2O |
| H | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Epsomite | MgSO4 · 7H2O |
| H | ⓘ Goethite | Fe3+O(OH) |
| H | ⓘ Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
| H | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| H | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| H | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| H | ⓘ Natroalunite | NaAl3(SO4)2(OH)6 |
| H | ⓘ Posnjakite | Cu4(SO4)(OH)6 · H2O |
| H | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| H | ⓘ Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| H | ⓘ Turquoise | CuAl6(PO4)4(OH)8 · 4H2O |
| H | ⓘ Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| H | ⓘ Zincobotryogen | (Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Clinochlore var. Pennine | Mg5Al(AlSi3O10)(OH)8 |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| O | ⓘ Anorthite | Ca(Al2Si2O8) |
| O | ⓘ Baryte | BaSO4 |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| O | ⓘ Brookite | TiO2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Chalcanthite | CuSO4 · 5H2O |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| O | ⓘ Copiapite | Fe2+Fe43+(SO4)6(OH)2 · 20H2O |
| O | ⓘ Cristobalite | SiO2 |
| O | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Epsomite | MgSO4 · 7H2O |
| O | ⓘ Goethite | Fe3+O(OH) |
| O | ⓘ Hematite | Fe2O3 |
| O | ⓘ Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
| O | ⓘ Hypersthene | (Mg,Fe)SiO3 |
| O | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| O | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| O | ⓘ Natroalunite | NaAl3(SO4)2(OH)6 |
| O | ⓘ Orthoclase | K(AlSi3O8) |
| O | ⓘ Posnjakite | Cu4(SO4)(OH)6 · H2O |
| O | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Sanidine | K(AlSi3O8) |
| O | ⓘ Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| O | ⓘ Turquoise | CuAl6(PO4)4(OH)8 · 4H2O |
| O | ⓘ Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| O | ⓘ Zincobotryogen | (Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Clinochlore var. Pennine | Mg5Al(AlSi3O10)(OH)8 |
| O | ⓘ Apatite | Ca5(PO4)3A |
| F | Fluorine | |
| F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Na | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Na | ⓘ Natroalunite | NaAl3(SO4)2(OH)6 |
| Mg | Magnesium | |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Epsomite | MgSO4 · 7H2O |
| Mg | ⓘ Hypersthene | (Mg,Fe)SiO3 |
| Mg | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Mg | ⓘ Clinochlore var. Pennine | Mg5Al(AlSi3O10)(OH)8 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| Al | ⓘ Anorthite | Ca(Al2Si2O8) |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Al | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
| Al | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Al | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Al | ⓘ Natroalunite | NaAl3(SO4)2(OH)6 |
| Al | ⓘ Orthoclase | K(AlSi3O8) |
| Al | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| Al | ⓘ Sanidine | K(AlSi3O8) |
| Al | ⓘ Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| Al | ⓘ Turquoise | CuAl6(PO4)4(OH)8 · 4H2O |
| Al | ⓘ Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Clinochlore var. Pennine | Mg5Al(AlSi3O10)(OH)8 |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Anorthite | Ca(Al2Si2O8) |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
| Si | ⓘ Cristobalite | SiO2 |
| Si | ⓘ Dickite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Hypersthene | (Mg,Fe)SiO3 |
| Si | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| Si | ⓘ Kaolinite | Al2(Si2O5)(OH)4 |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Si | ⓘ Orthoclase | K(AlSi3O8) |
| Si | ⓘ Pyrophyllite | Al2Si4O10(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Sanidine | K(AlSi3O8) |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Clinochlore var. Pennine | Mg5Al(AlSi3O10)(OH)8 |
| P | Phosphorus | |
| P | ⓘ Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
| P | ⓘ Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| P | ⓘ Turquoise | CuAl6(PO4)4(OH)8 · 4H2O |
| P | ⓘ Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| P | ⓘ Apatite | Ca5(PO4)3A |
| S | Sulfur | |
| S | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| S | ⓘ Baryte | BaSO4 |
| S | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Chalcanthite | CuSO4 · 5H2O |
| S | ⓘ Chalcocite | Cu2S |
| S | ⓘ Copiapite | Fe2+Fe43+(SO4)6(OH)2 · 20H2O |
| S | ⓘ Covellite | CuS |
| S | ⓘ Digenite | Cu9S5 |
| S | ⓘ Enargite | Cu3AsS4 |
| S | ⓘ Epsomite | MgSO4 · 7H2O |
| S | ⓘ Famatinite | Cu3SbS4 |
| S | ⓘ Galena | PbS |
| S | ⓘ Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
| S | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| S | ⓘ Luzonite | Cu3AsS4 |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Molybdenite | MoS2 |
| S | ⓘ Natroalunite | NaAl3(SO4)2(OH)6 |
| S | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| S | ⓘ Posnjakite | Cu4(SO4)(OH)6 · H2O |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Native Sulphur | S8 |
| S | ⓘ Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| S | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| S | ⓘ Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| S | ⓘ Zincobotryogen | (Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O |
| K | Potassium | |
| K | ⓘ Alunite | KAl3(SO4)2(OH)6 |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Muscovite var. Illite | K0.65Al2.0[Al0.65Si3.35O10](OH)2 |
| K | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Orthoclase | K(AlSi3O8) |
| K | ⓘ Sanidine | K(AlSi3O8) |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Anorthite | Ca(Al2Si2O8) |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Montmorillonite | (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O |
| Ca | ⓘ Woodhouseite | CaAl3(PO4)(SO4)(OH)6 |
| Ca | ⓘ Apatite | Ca5(PO4)3A |
| Ti | Titanium | |
| Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Ti | ⓘ Brookite | TiO2 |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Ti | ⓘ Rutile | TiO2 |
| Fe | Iron | |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Copiapite | Fe2+Fe43+(SO4)6(OH)2 · 20H2O |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Goethite | Fe3+O(OH) |
| Fe | ⓘ Hematite | Fe2O3 |
| Fe | ⓘ Hypersthene | (Mg,Fe)SiO3 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Jarosite | KFe33+(SO4)2(OH)6 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Zincobotryogen | (Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O |
| Cu | Copper | |
| Cu | ⓘ Brochantite | Cu4(SO4)(OH)6 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Chalcanthite | CuSO4 · 5H2O |
| Cu | ⓘ Chalcocite | Cu2S |
| Cu | ⓘ Covellite | CuS |
| Cu | ⓘ Digenite | Cu9S5 |
| Cu | ⓘ Enargite | Cu3AsS4 |
| Cu | ⓘ Famatinite | Cu3SbS4 |
| Cu | ⓘ Luzonite | Cu3AsS4 |
| Cu | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Cu | ⓘ Posnjakite | Cu4(SO4)(OH)6 · H2O |
| Cu | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| Cu | ⓘ Turquoise | CuAl6(PO4)4(OH)8 · 4H2O |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| Zn | ⓘ Zincobotryogen | (Zn,Mg,Mn2+)Fe3+(SO4)2(OH) · 7H2O |
| As | Arsenic | |
| As | ⓘ Enargite | Cu3AsS4 |
| As | ⓘ Luzonite | Cu3AsS4 |
| As | ⓘ Tennantite Subgroup | Cu6(Cu4C22+)As4S12S |
| Sr | Strontium | |
| Sr | ⓘ Svanbergite | SrAl3(PO4)(SO4)(OH)6 |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
| Ag | Silver | |
| Ag | ⓘ Native Gold var. Electrum | (Au,Ag) |
| Ag | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Sb | Antimony | |
| Sb | ⓘ Famatinite | Cu3SbS4 |
| Sb | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Ba | Barium | |
| Ba | ⓘ Baryte | BaSO4 |
| Au | Gold | |
| Au | ⓘ Native Gold var. Electrum | (Au,Ag) |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
| Pb | ⓘ Hinsdalite | PbAl3(PO4)(SO4)(OH)6 |
Localities in this Region
- Colorado
- Conejos County
- Rio Grande County
- Alum Creek Property
- Bob Tail Mine (MS 325; Claim: Bob Tail)
- Copper Hill Mine
- Del Norte Mine
- Dexter Tunnel (MS 77; Claim: Dexter)
- Esmond Mine (Claim: Esmond)
- Gold occurrence (MRDS - 10215812)
- Highland Mary Mine (Highland Mary No. 2. MS 16314; All Lower Highland Mary; Upper Highland Mary; Claims: Highland Mary; MS 606)
- Hugh Bly Mine
- Lookout Mountain
- Missionary Tunnel (Claim: Missionary; MS 124?)
- Montroy Tunnel
- Odin Mine
- Pickens Cut (Claim: Little Annie; MS 63)
- San Juan Mine
- Science Tunnel Occurrence
- South Mountain
- Colorado
- Rio Grande County
- South Mountain
- South Mountain Occurrence
- Summitville
- Tunnel No. 2 claim
- Winchester Tunnel
- Rio Grande County
Other Regions, Features and Areas that Intersect
North AmericaContinent
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
- Southern Rocky MountainsOrogenic Belt
USA
- San Juan MountainsMountain Range
This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
Sillitoe, Richard H. (1985) Ore-related breccias in volcanoplutonic arcs. Economic Geology, 80 (6). 1467-1514 doi:10.2113/gsecongeo.80.6.1467
Stoffregen, Roger (1986) Observations on the behavior of gold during supergene oxidation at Summitville, Colorado, U.S.A., and implications for electrum stability in the weathering environment. Applied Geochemistry, 1 (5) 549-558 doi:10.1016/0883-2927(86)90062-4
Stoffregen, Roger E. (1987) Genesis of acid-sulfate alteration and Au-Cu-Ag mineralization at Summitville, Colorado. Economic Geology, 82 (6) 1575-1591 doi:10.2113/gsecongeo.82.6.1575
Gray, John E., Coolbaugh, Mark F. (1994) Geology and geochemistry of Summitville, Colorado; an epithermal acid sulfate deposit in a volcanic dome. Economic Geology, 89 (8) 1906-1923 doi:10.2113/gsecongeo.89.8.1906
Bethke, Philip M., Rye, Robert O., Stoffregen, Roger E., Vikre, Peter G. (2005) Evolution of the magmatic-hydrothermal acid-sulfate system at Summitville, Colorado: integration of geological, stable-isotope, and fluid-inclusion evidence. Chemical Geology, 215 (1) 281-315 doi:10.1016/j.chemgeo.2004.06.041






Summitville Mine, Summitville, Rio Grande County, Colorado, USA