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Thread: how to calclaute this out?

  1. #1 how to calclaute this out? 
    Forum Freshman
    Join Date
    Apr 2014
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    maybe you can help me with that problem
    i dont understand problem 6 maybe you can show me?











    4. Use your answers from questions 1 and 2 to calculate equilibrium constants (K) for reaction (1) at the garnet core and rim:
    GARB: pyrope + annite = almandine + phlogopite (1)

    Garnet core Garnet rim
    0,00012 0,00279

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    5. Use your answers from questions 1 and 3 to calculate equilibrium constants (K) for the reaction (2) at the garnet core and rim:
    GASP: grossular + kyanite + 2 quartz = 3 anorthite (2)
    Garnet core Garnet rim
    34892,05 0,1944

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    6. Use the following geothermometer (GARB) and geobarometer (GASP) to calculate the pressure (P, units: MPa) and temperature (T, units: C) recorded by reactions (1) and (2) at the garnet core and rim. This question can be answered numerically, but is most easily answered graphically. Show your working.


    T_GARB=(52090+2.494P)/(19.506-8.3144ln(K_GARB ) )-273

    T_GASP=(-48357-66.08P)/(-150.66-8.3144ln(K_GASP ) )-273


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    • #2  
      Forum Freshman
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      Apr 2014
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      how to calcaute ?
      this site can make it clearer!


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