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Oyu Tolgoi mine, Oyu Tolgoi Cu-Au ore field (Turquoise Hill Cu-Au ore field), Erdenetsogt, Ömnögovi Aimag, Mongoliai
Regional Level Types
Oyu Tolgoi mineMine
Oyu Tolgoi Cu-Au ore field (Turquoise Hill Cu-Au ore field)Ore Field
Erdenetsogt- not defined -
Ömnögovi Aimag- not defined -
MongoliaCountry

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Latitude & Longitude (WGS84): 43° 0' 12'' North , 106° 51' 7'' East
Latitude & Longitude (decimal): 43.00348,106.85219
GeoHash:G#: wreuxkx3k
Locality type:Mine
Köppen climate type:BWk : Cold desert climate


Porphyry copper-gold ore field in southeastern Mongolia, close to the Chinese border. Perhaps the world's largest as yet unmined agglomeration of copper and gold deposits.

The mining is actually VERY active: https://www.youtube.com/watch?v=UoY5cVIdVMU

The site was discovered in 2001 and is being developed as a joint venture between Turquoise Hill Resources (a majority owned subsidiary of Rio Tinto) with 66% ownership and the Government of Mongolia with 34%.

The ore field contains four large deposits and several occurrences within a 7 km long belt.

Regions containing this locality

Eurasian Plate (Eurasia Plate)Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


18 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:

'Albite-Anorthite Series'
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Baryte
Formula: BaSO4
'Biotite'
Calcite
Formula: CaCO3
Cassiterite
Formula: SnO2
'Chlorite Group'
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Enargite
Formula: Cu3AsS4
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Goethite
Formula: α-Fe3+O(OH)
Gold
Formula: Au
Hematite
Formula: Fe2O3
Hematite var: Specularite
Formula: Fe2O3
'Hornblende'
'Limonite'
Formula: (Fe,O,OH,H2O)
Malachite
Formula: Cu2(CO3)(OH)2
Molybdenite
Formula: MoS2
Pyrrhotite
Formula: Fe7S8
Quartz
Formula: SiO2
Rutile
Formula: TiO2
Sphalerite
Formula: ZnS
Tenorite
Formula: CuO
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Zunyite
Formula: Al13Si5O20(OH,F)18Cl
Zunyite var: Dillnite
Formula: Al13Si5O20(OH,F)18Cl

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Enargite2.KA.05Cu3AsS4
Molybdenite2.EA.30MoS2
Pyrrhotite2.CC.10Fe7S8
Sphalerite2.CB.05aZnS
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Tenorite4.AB.10CuO
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 9 - Silicates
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Zunyite9.BJ.55Al13Si5O20(OH,F)18Cl
var: Dillnite9.BJ.55Al13Si5O20(OH,F)18Cl
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Biotite'-
'Chlorite Group'-
'Hornblende'-
'Limonite'-(Fe,O,OH,H2O)
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

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
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Group 3 - SULFOSALTS
ø = 4
Enargite3.2.1.1Cu3AsS4
Group 4 - SIMPLE OXIDES
AX
Tenorite4.2.3.1CuO
A2X3
Hematite4.3.1.2Fe2O3
AX2
Cassiterite4.4.1.5SnO2
Rutile4.4.1.1TiO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 57 - SOROSILICATES Si3O10 Groups and Larger Noncyclic Groups
Insular Si3O10 and Larger Noncyclic Groups with [Si5O16] groups
Zunyite57.3.1.1Al13Si5O20(OH,F)18Cl
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 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
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
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Biotite'-
'Chlorite Group'-
Hematite
var: Specularite
-Fe2O3
'Hornblende'-
'Limonite'-(Fe,O,OH,H2O)
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z
Zunyite
var: Dillnite
-Al13Si5O20(OH,F)18Cl

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Goethiteα-Fe3+O(OH)
H Limonite(Fe,O,OH,H2O)
H Zunyite (var: Dillnite)Al13Si5O20(OH,F)18Cl
H ZunyiteAl13Si5O20(OH,F)18Cl
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O MalachiteCu2(CO3)(OH)2
O BaryteBaSO4
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O HematiteFe2O3
O Goethiteα-Fe3+O(OH)
O Limonite(Fe,O,OH,H2O)
O RutileTiO2
O TenoriteCuO
O Hematite (var: Specularite)Fe2O3
O CassiteriteSnO2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O CalciteCaCO3
O Zunyite (var: Dillnite)Al13Si5O20(OH,F)18Cl
O ZunyiteAl13Si5O20(OH,F)18Cl
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O QuartzSiO2
FFluorine
F Zunyite (var: Dillnite)Al13Si5O20(OH,F)18Cl
F ZunyiteAl13Si5O20(OH,F)18Cl
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Zunyite (var: Dillnite)Al13Si5O20(OH,F)18Cl
Al ZunyiteAl13Si5O20(OH,F)18Cl
SiSilicon
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Zunyite (var: Dillnite)Al13Si5O20(OH,F)18Cl
Si ZunyiteAl13Si5O20(OH,F)18Cl
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si QuartzSiO2
SSulfur
S BaryteBaSO4
S MolybdeniteMoS2
S SphaleriteZnS
S EnargiteCu3AsS4
S PyrrhotiteFe7S8
ClChlorine
Cl Zunyite (var: Dillnite)Al13Si5O20(OH,F)18Cl
Cl ZunyiteAl13Si5O20(OH,F)18Cl
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca CalciteCaCO3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
TiTitanium
Ti RutileTiO2
FeIron
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe Goethiteα-Fe3+O(OH)
Fe Limonite(Fe,O,OH,H2O)
Fe Hematite (var: Specularite)Fe2O3
Fe PyrrhotiteFe7S8
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
CuCopper
Cu MalachiteCu2(CO3)(OH)2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu TenoriteCuO
Cu EnargiteCu3AsS4
ZnZinc
Zn SphaleriteZnS
AsArsenic
As EnargiteCu3AsS4
MoMolybdenum
Mo MolybdeniteMoS2
SnTin
Sn CassiteriteSnO2
BaBarium
Ba BaryteBaSO4
AuGold
Au GoldAu

Geochronology

Mineralization age: Late Devonian : 373 ± 1.2 Ma to 370 Ma

Important note: This table is based only on rock and mineral ages recorded below and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Devonian
   Late Devonian
ⓘ Molybdenite (youngest age)370 Ma
ⓘ Molybdenite (oldest age)373 ± 1.2 Ma

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

Carboniferous
298.9 - 358.9 Ma



ID: 3190023
Paleozoic sedimentary and volcanic rocks

Age: Carboniferous (298.9 - 358.9 Ma)

Lithology: Mafic-felsic mixed 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

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Economic Geology 96(6), 1407-1428 (2001)
Yi Zhang, Fengjun Nie, Sihong Jiang, and Peng Hu (2003): Discovery of the Ouyu Tolgoi copper-gold deposit in the Sino-Mongolia border region and its significance for mineral exploration. Geological Bulletin of China 22(9), 708-712 (in Chinese with English abstract).
Yikang Liu and Yebing Xu (2003): The prospecting and main features of Oyu Tolgoi porphyry Cu-Au deposit in Mongolia. Geology and Prospecting 39(1), 1-4.
Fengjun Nie, Sihong Jiang, Yi Zhang, Yan Liu, and Peng Hu (2004): Geological features of porphyry copper deposits in China-Mongolia border region and its neighbouring areas. Mineral Deposits 23(6), 176-189 (in Chinese with English abstract).
Seltmann, R., & Porter, T. M. (2005). The porphyry Cu–Au/Mo deposits of Central Eurasia: 1. Tectonic, geologic and metallogenic setting and significant deposits. Super porphyry copper and gold deposits: a global perspective, 2, 467-512.
Singer, D.A., Berger, V.I., and Moring, B.C. (2008): Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. US Geological Survey Open-File Report 2008-1155.
Mueller, A., Herrington, R., Armstrong, R., Seltmann, R., Kirwin, D.J., Stenina, N.G., and Kronz, A. (2010): Trace elements and cathodoluminescence of quartz in stockwork veins of Mongolian porphyry-style deposits. Mineralium Deposita 45, 707-727.


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