Chlorite, Biotite, Illite, Muscovite and Feldspar Dissolution Kinetics at Variable pH and Temperatures up to 280 deg C

Description

Chemical reactions pose an important but poorly understood threat to EGS long-term success because of their impact on fracture permeability. This report summarizes the dissolution rate equations for layered silicates where data were lacking for geothermal systems. Here we report updated rate laws for chlorite (Carroll and Smith 2013), biotite (Carroll and Smith, 2015), illite (Carroll and Smith, 2014), and for muscovite. Also included is a spreadsheet with rate data and rate equations for use in reactive transport simulators.

Resources

Name Format Description Link
53 Biotite, chlorite, illite, muscovite, and feldspar dissolution rates and data in spreadsheet format. Includes raw data, dissolution rate equations, and a derivation of kinetic dissolution rate and rate parameters. https://gdr.openei.org/files/910/KineticRates_10Feb2017.IM.xlsx
10 Report summarizing dissolution of biotite, chlorite, illite, muscovite, and feldspar at variable pH and temperatures up to 280 degrees C. https://gdr.openei.org/files/910/CarrollFY17LLNL_25Feb2017_IM.docx

Tags

  • success
  • egs
  • illite
  • rate-equations
  • chemistry
  • chlorite
  • enhanced-geothermal-systems
  • kinetics
  • geochemistry
  • dissolution
  • fracture-permeability
  • kinetic-data
  • biotite
  • muscovite
  • feldspar
  • geothermal
  • energy

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