Nanwenhe W deposit, Malipo County, Wenshan, Yunnan, Chinai
| Regional Level Types | |
|---|---|
| Nanwenhe W deposit | Deposit |
| Malipo County | County |
| Wenshan | Prefecture |
| Yunnan | Province |
| China | Country |
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Latitude & Longitude (WGS84):
22° 58' 35'' North , 104° 34' 31'' East
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Mabai | 63,569 (2012) | 13.3km |
| Thành Phố Hà Giang | 32,690 (2013) | 45.2km |
| Kaihua | 64,404 (2013) | 53.2km |
| Wenshan City | 450,000 (2018) | 54.3km |
The Nanwenhe mining area is located in the eastern part of the Laojunshan W-Sn polymetallic ore cluster region. It extends 8.6 km in length from north to south and 5–6.5 km in width from east to west, covering a mineralization area of up to 60 km2, with resource reserves reaching a large-scale deposit. It is the largest tungsten deposit in southeastern Yunnan in terms of resource reserves. The Nanwenhe tungsten deposit trends NE and is mainly divided into the Nanyangtian, Dayutang, and Maoping ore sections, distributed sequentially from north to south (Figure 3). The ore bodies occur in the skarn of the Paleoproterozoic Nanyangtian Formation of the Mengdongyan Group, primarily exhibiting layered and stratiform shapes. The average grade of the ore bodies is w(WO3) = 0.30%–0.58%.
The Nanwenhe tungsten deposit can be divided into three mineralized zones, from bottom to top: Zone III, Zone II, and Zone I. Zone III is located at the base of the middle section and the top of the lower section of the Nanyangtian Formation. Zone II contains less ore, with skarns serving as the wall rocks and mica schists occurring along the margins. Cross-cutting quartz stockworks are well-developed, and scheelite is found within quartz veins. Locally, coarse-grained scheelite occurs in skarns. Zone I is hosted in dense hornblende schists and skarns. A reticulated quartz vein system is observed, with the veins confined to the layers. Zone I contains disseminated scheelite mineralization.
The giant Nanwenhe scheelite deposit (22°59′11″N, 104°34′31″E) occurs in the Neoproterozoic greenschist facies rocks and underwent local deformation and metamorphism controlled by the Nanwenhe tectonic nappe system during 242–220 Ma. Throughout the Nanwenhe mine area, the two ductile faults (F2 and F3) are seen along the contact zones between gneiss, greenschist facies rocks, and gneissic granite that controlled the spatial distribution of skarn orebodies.
Reserves: 0.09 Mt WO3@0.54%
The Nanwenhe tungsten deposit can be divided into three mineralized zones, from bottom to top: Zone III, Zone II, and Zone I. Zone III is located at the base of the middle section and the top of the lower section of the Nanyangtian Formation. Zone II contains less ore, with skarns serving as the wall rocks and mica schists occurring along the margins. Cross-cutting quartz stockworks are well-developed, and scheelite is found within quartz veins. Locally, coarse-grained scheelite occurs in skarns. Zone I is hosted in dense hornblende schists and skarns. A reticulated quartz vein system is observed, with the veins confined to the layers. Zone I contains disseminated scheelite mineralization.
The giant Nanwenhe scheelite deposit (22°59′11″N, 104°34′31″E) occurs in the Neoproterozoic greenschist facies rocks and underwent local deformation and metamorphism controlled by the Nanwenhe tectonic nappe system during 242–220 Ma. Throughout the Nanwenhe mine area, the two ductile faults (F2 and F3) are seen along the contact zones between gneiss, greenschist facies rocks, and gneissic granite that controlled the spatial distribution of skarn orebodies.
Reserves: 0.09 Mt WO3@0.54%
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
18 valid minerals.
Rock Types Recorded
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Molybdenite | 2.EA.30 | MoS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| ⓘ | Arsenopyrite | 2.EB.20 | FeAsS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz | 4.DA.05 | SiO2 |
| ⓘ | Cassiterite | 4.DB.05 | SnO2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Calcite | 5.AB.05 | CaCO3 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
| Group 9 - Silicates | |||
| ⓘ | Zircon | 9.AD.30 | Zr(SiO4) |
| ⓘ | Titanite | 9.AG.15 | CaTiO(SiO4) |
| ⓘ | Epidote | 9.BG.05a | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| ⓘ | Beryl | 9.CJ.05 | Be3Al2(Si6O18) |
| ⓘ | Diopside | 9.DA.15 | CaMgSi2O6 |
| ⓘ | Actinolite | 9.DE.10 | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| ⓘ | Tremolite | 9.DE.10 | ◻Ca2Mg5(Si8O22)(OH)2 |
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | Albite | 9.FA.35 | Na(AlSi3O8) |
| Unclassified | |||
| ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| ⓘ | 'Chlorite Group' | - | |
| ⓘ | 'Feldspar Group' | - | |
| ⓘ | 'Tourmaline' | - | AD3G6(T6O18)(BO3)3X3Z |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
| ⓘ | 'K Feldspar' | - | |
| ⓘ | 'Garnet Group' | - | X3Z2(SiO4)3 |
| ⓘ | 'Apatite' | - | Ca5(PO4)3A |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| H | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Be | Beryllium | |
| Be | ⓘ Beryl | Be3Al2(Si6O18) |
| B | Boron | |
| B | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| C | Carbon | |
| C | ⓘ Calcite | CaCO3 |
| O | Oxygen | |
| O | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| O | ⓘ Albite | Na(AlSi3O8) |
| O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| O | ⓘ Beryl | Be3Al2(Si6O18) |
| O | ⓘ Calcite | CaCO3 |
| O | ⓘ Cassiterite | SnO2 |
| O | ⓘ Diopside | CaMgSi2O6 |
| O | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Quartz | SiO2 |
| O | ⓘ Scheelite | Ca(WO4) |
| O | ⓘ Titanite | CaTiO(SiO4) |
| O | ⓘ Tourmaline | AD3G6(T6O18)(BO3)3X3Z |
| O | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| O | ⓘ Zircon | Zr(SiO4) |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| O | ⓘ Garnet Group | X3Z2(SiO4)3 |
| 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 | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Mg | Magnesium | |
| Mg | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Mg | ⓘ Diopside | CaMgSi2O6 |
| Mg | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Albite | Na(AlSi3O8) |
| Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Al | ⓘ Beryl | Be3Al2(Si6O18) |
| Al | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Si | ⓘ Albite | Na(AlSi3O8) |
| Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Si | ⓘ Beryl | Be3Al2(Si6O18) |
| Si | ⓘ Diopside | CaMgSi2O6 |
| Si | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Quartz | SiO2 |
| Si | ⓘ Titanite | CaTiO(SiO4) |
| Si | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Si | ⓘ Zircon | Zr(SiO4) |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | ⓘ Garnet Group | X3Z2(SiO4)3 |
| P | Phosphorus | |
| P | ⓘ Apatite | Ca5(PO4)3A |
| S | Sulfur | |
| S | ⓘ Arsenopyrite | FeAsS |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Molybdenite | MoS2 |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| K | Potassium | |
| K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Ca | Calcium | |
| Ca | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Ca | ⓘ Calcite | CaCO3 |
| Ca | ⓘ Diopside | CaMgSi2O6 |
| Ca | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Ca | ⓘ Titanite | CaTiO(SiO4) |
| Ca | ⓘ Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| 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 | ⓘ Titanite | CaTiO(SiO4) |
| Fe | Iron | |
| Fe | ⓘ Actinolite | ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 |
| Fe | ⓘ Arsenopyrite | FeAsS |
| Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Epidote | (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH) |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| As | Arsenic | |
| As | ⓘ Arsenopyrite | FeAsS |
| Zr | Zirconium | |
| Zr | ⓘ Zircon | Zr(SiO4) |
| Mo | Molybdenum | |
| Mo | ⓘ Molybdenite | MoS2 |
| Sn | Tin | |
| Sn | ⓘ Cassiterite | SnO2 |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
Other Regions, Features and Areas containing this locality
AsiaContinent
China
- Giant Sb metallogenic beltMineral Belt
- ⭔Southwest ChinaRegion
- Yunnan
- Wenshan
- Laojunshan ore districtOre Field
- Wenshan
Eurasian PlateTectonic Plate
- West CathaysiaOrogenic Belt
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References
[2]Liu, Yanbin, Zhang, Lifei, Santosh, M., Dong, Guochen, Zhou, Hongying, Que, Chaoyang, Yang, Cheng-Xue (2023) Multi-stage metallogeny in the southwestern part of South China, and paleotectonic and climatic implications: A high precision geochronologic study. Geoscience Frontiers, 14 (3) 101536 doi:10.1016/j.gsf.2023.101536