The Sensitivity of Temperature to Tachyhydrite Formation: Evidence from Evaporation Experiments of Simulated Brines Based on Compositions of Fluid Inclusions in Halite
Joint Authors
Cheng, Huaide
Hai, Qingyu
Li, Jun
Song, Jianguo
Ma, Xuehai
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-03
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
An average of concentrations of Na+, Mg2+, Ca2+, K+, and Cl– in fluid inclusions, from the Khorat Plateau evaporite primary halite, was employed.
The evaporation–crystallization sequence and paths were obtained under various temperature conditions for the quinary system, Na+, K+, Mg2+, Ca2+//Cl–-H2O.
The results showed (1) a halite, sylvite, and carnallite stage at 25°C; (2) a halite, sylvite, carnallite, and bischofite stage at 35°C; and (3) a halite, sylvite, carnallite, bischofite, and tachyhydrite stage at 50°C.
These results indicated that (1) a hot state is favorable for tachyhydrite formation, (2) tachyhydrite occurs in the late evaporation stage, and (3) the stability field of tachyhydrite increases with increasing temperature.
The crystallization paths were plotted by the application of Jänecke phase diagram at 25°C, 35°C, and 50°C involving the system Na+, K+, Mg2+, Ca2+//Cl–-H2O.
The crystallization sequence predicted on the Jänecke phase diagram showed a good agreement with the experimental crystallization sequences and paths.
Tachyhydrite precipitate more easily from a high Ca concentration solution during the late evaporation stage with increasing temperature under the same relative humidity condition.
The evaporite mineral succession in the Khorat Plateau, Sergipe, and Congo basins agrees well with the mineral precipitation sequences predicted from their own fluid inclusions in halite.
This is confirmed by the simulation of the Jänecke phase diagram at 50°C involving the system Na+, K+, Mg2+, Ca2+//Cl–-H2O.
The precipitation of tachyhydrite was sensitive to the temperature, and that the thermal resource may originate from a temperature profile in the solar pond.
This study presented a simulated approach that can help in understanding similar cases that studies the sensitivity of temperature to salt formation.
American Psychological Association (APA)
Cheng, Huaide& Hai, Qingyu& Li, Jun& Song, Jianguo& Ma, Xuehai. 2019. The Sensitivity of Temperature to Tachyhydrite Formation: Evidence from Evaporation Experiments of Simulated Brines Based on Compositions of Fluid Inclusions in Halite. Geofluids،Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1154303
Modern Language Association (MLA)
Cheng, Huaide…[et al.]. The Sensitivity of Temperature to Tachyhydrite Formation: Evidence from Evaporation Experiments of Simulated Brines Based on Compositions of Fluid Inclusions in Halite. Geofluids No. 2019 (2019), pp.1-16.
https://search.emarefa.net/detail/BIM-1154303
American Medical Association (AMA)
Cheng, Huaide& Hai, Qingyu& Li, Jun& Song, Jianguo& Ma, Xuehai. The Sensitivity of Temperature to Tachyhydrite Formation: Evidence from Evaporation Experiments of Simulated Brines Based on Compositions of Fluid Inclusions in Halite. Geofluids. 2019. Vol. 2019, no. 2019, pp.1-16.
https://search.emarefa.net/detail/BIM-1154303
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1154303