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El Bronce Mine, El Bronce District, Petorca Province, Valparaíso Region, Chile

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Latitude & Longitude (WGS84): 32° 11' South , 70° 56' West
Latitude & Longitude (decimal): -32.18333,-70.93333
GeoHash:G#: 66m8cv5ym
Locality type:Mine
Köppen climate type:Csb : Warm-summer Mediterranean climate
Name(s) in local language(s):Mina El Bronce


An Au-Ag-Cu epithermal deposit formed during late Cretaceous age, with presence of quartz-calcite veins, breccias and stockwork veins.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


24 valid minerals.

Detailed Mineral List:

Alunite
Formula: KAl3(SO4)2(OH)6
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Aragonite
Formula: CaCO3
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)
Baryte
Formula: BaSO4
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Bornite
Formula: Cu5FeS4
Reference: Econ Geol (1991) 86:1317-1345
Calcite
Formula: CaCO3
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Chalcopyrite
Formula: CuFeS2
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
'Chlorite Group'
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Econ Geol (1991) 86:1317-1345
Clinochlore var: Ripidolite
Formula: (Mg,Fe,Al)6(Si,Al)4O10(OH)8
Reference: Econ Geol (1991) 86:1317-1345
Dolomite
Formula: CaMg(CO3)2
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)
'Electrum'
Formula: (Au, Ag)
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Econ Geol (1991) 86:1317-1345
Freibergite
Formula: Ag6[Cu4Fe2]Sb4S13-x
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)
Galena
Formula: PbS
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Gold
Formula: Au
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Hematite
Formula: Fe2O3
Reference: Econ Geol (1991) 86:1317-1345
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Econ Geol (1991) 86:1317-1345
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Econ Geol (1991) 86:1317-1345
Proustite
Formula: Ag3AsS3
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)
Pyrargyrite
Formula: Ag3SbS3
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)
Pyrite
Formula: FeS2
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Quartz
Formula: SiO2
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Siderite
Formula: FeCO3
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Silver
Formula: Ag
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)
Sphalerite
Formula: ZnS
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
'Tennantite-Tetrahedrite Series'
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service); Econ Geol (1991) 86:1317-1345
Tetrahedrite
Formula: Cu6[Cu4(Fe,Zn)2]Sb4S13
Reference: Maurizio Dini collections; geological informations from Sernageomin (National Mine Chilean Service)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Electrum'1.AA.05(Au, Ag)
'Gold'1.AA.05Au
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
'Bornite'2.BA.15Cu5FeS4
'Chalcopyrite'2.CB.10aCuFeS2
'Freibergite'2.GB.05Ag6[Cu4Fe2]Sb4S13-x
'Galena'2.CD.10PbS
'Proustite'2.GA.05Ag3AsS3
'Pyrargyrite'2.GA.05Ag3SbS3
'Pyrite'2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Tetrahedrite2.GB.05Cu6[Cu4(Fe,Zn)2]Sb4S13
Group 4 - Oxides and Hydroxides
'Hematite'4.CB.05Fe2O3
'Quartz'4.DA.05SiO2
Group 5 - Nitrates and Carbonates
'Ankerite'5.AB.10Ca(Fe2+,Mg)(CO3)2
'Aragonite'5.AB.15CaCO3
'Calcite'5.AB.05CaCO3
'Dolomite'5.AB.10CaMg(CO3)2
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Alunite'7.BC.10KAl3(SO4)2(OH)6
'Baryte'7.AD.35BaSO4
Group 9 - Silicates
'Clinochlore'9.EC.55Mg5Al(AlSi3O10)(OH)8
var: Ripidolite9.EC.55(Mg,Fe,Al)6(Si,Al)4O10(OH)8
'Epidote'9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Kaolinite'9.ED.05Al2(Si2O5)(OH)4
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
Tennantite-Tetrahedrite Series-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Silver1.1.1.2Ag
Group 2 - SULFIDES
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
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
Freibergite3.3.6.3Ag6[Cu4Fe2]Sb4S13-x
Tetrahedrite3.3.6.1Cu6[Cu4(Fe,Zn)2]Sb4S13
ø = 3
Proustite3.4.1.1Ag3AsS3
Pyrargyrite3.4.1.2Ag3SbS3
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Alunite30.2.4.1KAl3(SO4)2(OH)6
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Clinochlore71.4.1.4Mg5Al(AlSi3O10)(OH)8
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
Aragonite-CaCO3
'Chlorite Group'-
Clinochlore
var: Ripidolite
-(Mg,Fe,Al)6(Si,Al)4O10(OH)8
'Electrum'-(Au, Ag)
Kaolinite-Al2(Si2O5)(OH)4
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2
'Tennantite-Tetrahedrite Series'-

List of minerals for each chemical element

HHydrogen
H AluniteKAl3(SO4)2(OH)6
H ClinochloreMg5Al(AlSi3O10)(OH)8
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H KaoliniteAl2(Si2O5)(OH)4
H MuscoviteKAl2(AlSi3O10)(OH)2
H Clinochlore (var: Ripidolite)(Mg,Fe,Al)6(Si,Al)4O10(OH)8
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CCarbon
C AnkeriteCa(Fe2+,Mg)(CO3)2
C AragoniteCaCO3
C CalciteCaCO3
C DolomiteCaMg(CO3)2
C SideriteFeCO3
OOxygen
O AluniteKAl3(SO4)2(OH)6
O AnkeriteCa(Fe2+,Mg)(CO3)2
O AragoniteCaCO3
O BaryteBaSO4
O CalciteCaCO3
O ClinochloreMg5Al(AlSi3O10)(OH)8
O DolomiteCaMg(CO3)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O Clinochlore (var: Ripidolite)(Mg,Fe,Al)6(Si,Al)4O10(OH)8
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O SideriteFeCO3
MgMagnesium
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg ClinochloreMg5Al(AlSi3O10)(OH)8
Mg DolomiteCaMg(CO3)2
Mg Clinochlore (var: Ripidolite)(Mg,Fe,Al)6(Si,Al)4O10(OH)8
AlAluminium
Al AluniteKAl3(SO4)2(OH)6
Al ClinochloreMg5Al(AlSi3O10)(OH)8
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al KaoliniteAl2(Si2O5)(OH)4
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Clinochlore (var: Ripidolite)(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
SiSilicon
Si ClinochloreMg5Al(AlSi3O10)(OH)8
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si KaoliniteAl2(Si2O5)(OH)4
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Clinochlore (var: Ripidolite)(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
SSulfur
S AluniteKAl3(SO4)2(OH)6
S BaryteBaSO4
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S FreibergiteAg6[Cu4Fe2]Sb4S13-x
S GalenaPbS
S ProustiteAg3AsS3
S PyrargyriteAg3SbS3
S PyriteFeS2
S SphaleriteZnS
S TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
KPotassium
K AluniteKAl3(SO4)2(OH)6
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca AragoniteCaCO3
Ca CalciteCaCO3
Ca DolomiteCaMg(CO3)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe FreibergiteAg6[Cu4Fe2]Sb4S13-x
Fe HematiteFe2O3
Fe PyriteFeS2
Fe Clinochlore (var: Ripidolite)(Mg,Fe,Al)6(Si,Al)4O10(OH)8
Fe SideriteFeCO3
Fe TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu FreibergiteAg6[Cu4Fe2]Sb4S13-x
Cu TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
ZnZinc
Zn SphaleriteZnS
Zn TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
AsArsenic
As ProustiteAg3AsS3
AgSilver
Ag Electrum(Au, Ag)
Ag FreibergiteAg6[Cu4Fe2]Sb4S13-x
Ag ProustiteAg3AsS3
Ag PyrargyriteAg3SbS3
Ag SilverAg
SbAntimony
Sb FreibergiteAg6[Cu4Fe2]Sb4S13-x
Sb PyrargyriteAg3SbS3
Sb TetrahedriteCu6[Cu4(Fe,Zn)2]Sb4S13
BaBarium
Ba BaryteBaSO4
AuGold
Au Electrum(Au, Ag)
Au GoldAu
PbLead
Pb GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Tertiary - Cretaceous
2.588 - 145 Ma



ID: 3188135
Mesozoic-Cenozoic volcanic rocks

Age: Phanerozoic (2.588 - 145 Ma)

Lithology: Volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Econ Geol (1991) 86:1317-1345


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