====== Cpx-Opx: Finnerty, Boyd, 1984 ======
 
For Cpx-Opx. Only for garnet peridotites. Constraint for CPX: 2*(CA/(CA+MG)) < 1.

=== Details ===

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This sensor from [[:about_tpf|TPF]] collection
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^ Article | <ref:finnerty1984> (clarification required) |
^ Callibration |  |
^ Precision |  |
^ Ranges |  |
^ Renew sensors |  |

<use:sensors.t.cpx_opx_finnerty_boyd_1984>
<test:sensors.t.cpx_opx_finnerty_boyd_1984>

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  * <del>заголовок</del>
  * <del>краткое описание</del>
  * <del>статья</del>
  * <del>ссылка</del>
  * карточка
  * подробное описание
  * <del>код</del>
  * тест
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=== Source ===
<Code linenums lang-r>
source("utilities_tpf.r");

sensors.t.cpx_opx_finnerty_boyd_1984 <- function(Cpx, P, usePFU = FALSE, ...){
    
    row_names = Cpx$Name;
    
    if(!usePFU) Cpx <- tpf.recalc_minaral("CPX",Cpx);

    X <- Cpx$Ca_pfu / (Cpx$Ca_pfu + Cpx$Mg_pfu);

    T <- rep(NaN, nrow(Cpx));

    if (2 * X<1) {
        T <- exp((log(1 - 2 * X) + 5.37 * log(1941 + 5.04 * P)) / 5.37) - 273.15;
    }
    
    return(data.frame(Name=paste0(row_names),P=P,T_calc=T));
}

sensors.t.cpx_opx_finnerty_boyd_1984.args <- function(){
    ars <- list();
    ars$minerals <- c("Cpx");
    ars$ranges <- c("P");
    return(ars);
}

sensors.t.cpx_opx_finnerty_boyd_1984.test <- function(){
    sensors.t.cpx_opx_finnerty_boyd_1984(data.frame(Name=c('Test'), SiO2_wtp=c(50), CaO_wtp=c(10), MgO_wtp=c(20)),15);
}
</Code>

{{tag> tpf Cpx AP_igroup fixed}}