Shangxu Au deposit, Nyima Co. (Nima Co.), Nagqu, Tibet, Chinai
| Regional Level Types | |
|---|---|
| Shangxu Au deposit | Deposit |
| Nyima Co. (Nima Co.) | County |
| Nagqu | City |
| Tibet | Autonomous Region |
| China | Country |
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Latitude & Longitude (WGS84):
31° 22' 35'' North , 87° 37' 46'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Name(s) in local language(s):
商旭金矿床, 双湖县, 那曲地区 (ནག་ཆུ་ས་ཁུལ་), 西藏自治区, 中国
Orogenic Au: 6 t
Over 15 gold lodes have been verified at Shangxu. The ore bodies are generated by occurrences similar to those in strata and thrusts striking NWW and dipping at 48°–85° to the south, with lengths of > 54–1000 m, thicknesses of 1.3–4.5 m, extending to depths of > 70–160 m, varying in grades of 1–30 g/t with average grades of 2–15.5 g/t. Mineralization is developed as massive to laminated quartz veins, saddle reefs, breccias and disseminated sulfides, hosted by brecciated quartz and mixed clay-rich breccia matrix, which change outwards into intensively deformed and sheared wall rocks.
Hydrothermal fluids recorded three main stages based on mineral paragenesis. The earliest was a pre-ore barren quartz stage (H1). The basin sediment-sourced methane-bearing fluid led to early barren quartz veins and siderite alteration. After that, it was a gold mineralization stage (H2), which was constituted of a quartz–pyrite sub-stage (H2a) and a quartz–pyrite–sulfides sub-stage (H2b). The H2a sub-stage produced massive quartz veins with euhedral pyrite and gold. The following H2b sub-stage generated abundant quartz, granular pyrite, muscovite with minor chalcopyrite, galena, sphalerite and gold. The hydrothermal activity ended up with a carbonate–sulfide stage (H3), which was composed of an ankerite–sulfide sub-stage (H3a) and a calcite–sulfide sub-stage (H3b). The H3a sub-stage is distinguished by abundant ankerite, muscovite, sulfides with minor quartz and chlorite. The calcite–sulfide stage (H3b) is characterized by calcite, sulfides, with minor quartz and chlorite.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
22 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
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Alphabetical List Tree DiagramDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Native Gold | 1.AA.05 | Au |
| ⓘ | Graphite | 1.CB.05a | C |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Digenite | 2.BA.10 | Cu9S5 |
| ⓘ | Bornite | 2.BA.15 | Cu5FeS4 |
| ⓘ | Sphalerite | 2.CB.05a | ZnS |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Millerite | 2.CC.20 | NiS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Marcasite | 2.EB.10a | FeS2 |
| ⓘ | Cobaltite | 2.EB.25 | CoAsS |
| ⓘ | Gersdorffite | 2.EB.25 | NiAsS |
| ⓘ | 'Tetrahedrite Subgroup' | 2.GB.05 | Cu6(Cu4C2+2)Sb4S12S |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Rutile | 4.DB.05 | TiO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| ⓘ | Siderite | 5.AB.05 | FeCO3 |
| ⓘ | Calcite var. Iron-bearing Calcite | 5.AB.05 | (Ca,Fe)CO3 |
| ⓘ | Ankerite | 5.AB.10 | Ca(Fe2+,Mg)(CO3)2 |
| ⓘ | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Limonite' | - | |
| ⓘ | 'Monazite Group' | - | REE(PO4) |
| ⓘ | 'Apatite' | - | Ca5(PO4)3(Cl/F/OH) |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| C | Carbon | |
| C | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| C | ⓘ Calcite | CaCO3 |
| C | ⓘ Dolomite | CaMg(CO3)2 |
| C | ⓘ Graphite | C |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| C | ⓘ Siderite | FeCO3 |
| C | ⓘ Calcite var. Iron-bearing Calcite | (Ca,Fe)CO3 |
| O | Oxygen | |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Dolomite | CaMg(CO3)2 |
| O | ⓘ Magnetite | Fe2+Fe23+O4 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Monazite Group | REE(PO4) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Rutile | TiO2 |
| O | ⓘ Siderite | FeCO3 |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Calcite var. Iron-bearing Calcite | (Ca,Fe)CO3 |
| O | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| F | Fluorine | |
| F | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Na | Sodium | |
| Na | ⓘ Albite | Na(AlSi3O8) |
| Mg | Magnesium | |
| Mg | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Mg | ⓘ Dolomite | CaMg(CO3)2 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| P | Phosphorus | |
| P | ⓘ Monazite Group | REE(PO4) |
| P | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| S | Sulfur | |
| S | ⓘ Bornite | Cu5FeS4 |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Cobaltite | CoAsS |
| S | ⓘ Digenite | Cu9S5 |
| S | ⓘ Galena | PbS |
| S | ⓘ Gersdorffite | NiAsS |
| S | ⓘ Marcasite | FeS2 |
| S | ⓘ Millerite | NiS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Sphalerite | ZnS |
| S | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Cl | Chlorine | |
| Cl | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Dolomite | CaMg(CO3)2 |
| Ca | ⓘ Calcite var. Iron-bearing Calcite | (Ca,Fe)CO3 |
| Ca | ⓘ Apatite | Ca5(PO4)3(Cl/F/OH) |
| Ti | Titanium | |
| Ti | ⓘ Rutile | TiO2 |
| Fe | Iron | |
| Fe | ⓘ Ankerite | Ca(Fe2+,Mg)(CO3)2 |
| Fe | ⓘ Bornite | Cu5FeS4 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
| Fe | ⓘ Marcasite | FeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Siderite | FeCO3 |
| Fe | ⓘ Calcite var. Iron-bearing Calcite | (Ca,Fe)CO3 |
| Co | Cobalt | |
| Co | ⓘ Cobaltite | CoAsS |
| Ni | Nickel | |
| Ni | ⓘ Gersdorffite | NiAsS |
| Ni | ⓘ Millerite | NiS |
| Cu | Copper | |
| Cu | ⓘ Bornite | Cu5FeS4 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Digenite | Cu9S5 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Cu | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Zn | Zinc | |
| Zn | ⓘ Sphalerite | ZnS |
| As | Arsenic | |
| As | ⓘ Cobaltite | CoAsS |
| As | ⓘ Gersdorffite | NiAsS |
| Sb | Antimony | |
| Sb | ⓘ Tetrahedrite Subgroup | Cu6(Cu4C22+)Sb4S12S |
| Au | Gold | |
| Au | ⓘ Native Gold | Au |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Regions, Features and Areas containing this locality
AsiaContinent
- Hindukush Himalayan RegionGroup of Mountain Ranges
China
- Northern Tibet Li Mineral BeltMineral Belt
- ⭔Southwest ChinaRegion
- Tibet
- Bangonghu–Nujiang metallogenic beltMineral Belt
- Gangdese Metallogenic BeltMineral Belt
Eurasian PlateTectonic Plate
- Lhasa TerraneVolcanic Arc
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References
[1]Fang, Xiang, Feng-Gu, Ju-Tang, Song, Yang, Beaudoin, Georges, Ri-He, Hui-Fan, Tang, Pan, Yang, Chao, Li-Jia (2024) Mesozoic orogenic gold metallogenesis at the Bangong–Nujiang suture belt, central Tibet: Constraints from pyrite textures, composition and sulfur isotope of the Shangxu gold deposit. Ore Geology Reviews, 170. 106135 doi:10.1016/j.oregeorev.2024.106135
