Pingluoba brine-bearing structure, Chengdu, Sichuan, Chinai
| Regional Level Types | |
|---|---|
| Pingluoba brine-bearing structure | Formation |
| Chengdu | Prefecture-level City |
| Sichuan | Province |
| China | Country |
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Latitude & Longitude (WGS84):
30° North , 103° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~97km
Locality type:
KΓΆppen climate type:
This brine-bearing formation is located in an anticline, in which high-K brines are found in the carbonate rocks of the Middle Triassic Leikoupo Group (mainly composed of carbonate rocks, gypsum, and salt-rock), western Sichuan Basin. It occurs at depth ranging from 4,465 to 4,565 m and the brines are enriched in a fault zone in the anticline.
The underlying salt basin developed in a sequence of limestone, dolomite, anhydrite, and halite; polyhalite is an ubiquitous insoluble potassium mineral. The salt basin was reached by the Pingluo 4 well, drilled in the central part of the salt basin, and the Fenglu 1 well, drilled at the salt basin edge. In the collected brine samples from the Pingluo 4 well a K+ concentration of 49.950 g/l was detected; from the Fenglu 1 well the K+ concentration reached 3.880 g/l only. Although both wells are located in the salt basin, the concentration of K+ is very different and indicates that the underlying salt basin is not a predominant factor in potassium enrichment of the brines.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
6 valid minerals.
Rock Types Recorded
Note: data is currently VERY limited. Please bear with us while we work towards adding this information!
Select Rock List Type
Alphabetical List Tree DiagramDetailed Mineral List:
| β Anhydrite Formula: CaSO4 Reference: Zhang Bing, Yang Kai, Wang Xuben, Xu Zhengqi, Yang Hongyu, Zhang Saimin, Chen Jinchao, Zhang Mingming and Liu Wei (2018) Salt-gathering and potassium formation of potassium-rich brine during the Triassic in the Sichuan Basin, China. Acta Geologica Sinica (English Edition), 92, 6, 2233β2250.
|
| β Dolomite Formula: CaMg(CO3)2 Reference: Zhang Bing, Yang Kai, Wang Xuben, Xu Zhengqi, Yang Hongyu, Zhang Saimin, Chen Jinchao, Zhang Mingming and Liu Wei (2018) Salt-gathering and potassium formation of potassium-rich brine during the Triassic in the Sichuan Basin, China. Acta Geologica Sinica (English Edition), 92, 6, 2233β2250.
|
| β Gypsum Formula: CaSO4 · 2H2O Reference: Zhang Bing, Yang Kai, Wang Xuben, Xu Zhengqi, Yang Hongyu, Zhang Saimin, Chen Jinchao, Zhang Mingming and Liu Wei (2018) Salt-gathering and potassium formation of potassium-rich brine during the Triassic in the Sichuan Basin, China. Acta Geologica Sinica (English Edition), 92, 6, 2233β2250.
|
| β Halite Formula: NaCl Reference: Zhang Bing, Yang Kai, Wang Xuben, Xu Zhengqi, Yang Hongyu, Zhang Saimin, Chen Jinchao, Zhang Mingming and Liu Wei (2018) Salt-gathering and potassium formation of potassium-rich brine during the Triassic in the Sichuan Basin, China. Acta Geologica Sinica (English Edition), 92, 6, 2233β2250.
|
| β Polyhalite Formula: K2Ca2Mg(SO4)4 · 2H2O Reference: Zhang Bing, Yang Kai, Wang Xuben, Xu Zhengqi, Yang Hongyu, Zhang Saimin, Chen Jinchao, Zhang Mingming and Liu Wei (2018) Salt-gathering and potassium formation of potassium-rich brine during the Triassic in the Sichuan Basin, China. Acta Geologica Sinica (English Edition), 92, 6, 2233β2250.
|
| β Sylvite Formula: KCl Reference: Zhang Bing, Yang Kai, Wang Xuben, Xu Zhengqi, Yang Hongyu, Zhang Saimin, Chen Jinchao, Zhang Mingming and Liu Wei (2018) Salt-gathering and potassium formation of potassium-rich brine during the Triassic in the Sichuan Basin, China. Acta Geologica Sinica (English Edition), 92, 6, 2233β2250.
|
List of minerals arranged by Strunz 10th Edition classification
| Group 3 - Halides | |||
|---|---|---|---|
| β | Halite | 3.AA.20 | NaCl |
| β | Sylvite | 3.AA.20 | KCl |
| Group 5 - Nitrates and Carbonates | |||
| β | Dolomite | 5.AB.10 | CaMg(CO3)2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| β | Anhydrite | 7.AD.30 | CaSO4 |
| β | Gypsum | 7.CD.40 | CaSO4 Β· 2H2O |
| β | Polyhalite | 7.CC.65 | K2Ca2Mg(SO4)4 Β· 2H2O |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | β Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
| H | β Gypsum | CaSO4 · 2H2O |
| C | Carbon | |
| C | β Dolomite | CaMg(CO3)2 |
| O | Oxygen | |
| O | β Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
| O | β Gypsum | CaSO4 · 2H2O |
| O | β Anhydrite | CaSO4 |
| O | β Dolomite | CaMg(CO3)2 |
| Na | Sodium | |
| Na | β Halite | NaCl |
| Mg | Magnesium | |
| Mg | β Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
| Mg | β Dolomite | CaMg(CO3)2 |
| S | Sulfur | |
| S | β Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
| S | β Gypsum | CaSO4 · 2H2O |
| S | β Anhydrite | CaSO4 |
| Cl | Chlorine | |
| Cl | β Sylvite | KCl |
| Cl | β Halite | NaCl |
| K | Potassium | |
| K | β Sylvite | KCl |
| K | β Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
| Ca | Calcium | |
| Ca | β Polyhalite | K2Ca2Mg(SO4)4 · 2H2O |
| Ca | β Gypsum | CaSO4 · 2H2O |
| Ca | β Anhydrite | CaSO4 |
| Ca | β Dolomite | CaMg(CO3)2 |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Xu Guosheng, Chen Meiling, Liu Wei, Meng Yuzhang, Yang Peng, Hu Yonghong, Peng Jingcheng, Wang Xiangang and Huang Xiaoqiong (2012). Lithofacies palaeogeography and forecast of potassiumβrich brine of Leikoupo Formation in western Sichuan. Mineral Deposits, 31(2), 309β322 (in Chinese with English abstract).
Zhang Chengjiang, Xu Zhengqi, Ni Shijun and Yin Guan (2012) Genesis of potassium-bearing brine in Pingluoba structure region, estern Sichuan depression. Advances in Earth Science, 27(10), 1054β1060 (in Chinese with English abstract).
Zhou Xun, Jiang Changlong, Zhao Jjingbo, Cao Qin, Han Jiajun and Wang Xiaocui (2015) Occurrence and resource evaluation of the subsurface high-K brines in the Pingluoba brine-bearing structure in western Sichuan Basin. Environmental Earth Sciences, 73(12), 8565β8574.
Xu Zhengqi, Yin Guan, Zhang Chengjiang and Chen Xuanrong (2017) Geological and geochemical evolution of forming of kalium-rich brine in Sichuan Basin. Acta Geologica Sinica (English Edition), 91, Supp. 1, 140β141.
Zhang Bing, Yang Kai, Wang Xuben, Xu Zhengqi, Yang Hongyu, Zhang Saimin, Chen Jinchao, Zhang Mingming and Liu Wei (2018) Salt-gathering and potassium formation of potassium-rich brine during the Triassic in the Sichuan Basin, China. Acta Geologica Sinica (English Edition), 92, 6, 2233β2250.
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Pingluoba brine-bearing structure, Chengdu, Sichuan, China