Cpx-Opx: Fonarev, 1994 <C>

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source("utilities_tpf.r");

sensors.t.cpx_opx_fonarev_1994_c <- function(Cpx, Opx, P, ...){
    Cpx <- tpf.recalc_minaral("CPX",Cpx);

    X <- (Cpx$Fe_p2_pfu + Cpx$Fe_p3_pfu) / (Cpx$Mg_pfu + Cpx$Fe_p2_pfu + Cpx$Fe_p3_pfu + Cpx$Ca_pfu);
    Y <- Cpx$Ca_pfu / (Cpx$Mg_pfu + Cpx$Fe_p2_pfu + Cpx$Fe_p3_pfu + Cpx$Ca_pfu);
    Z <- Cpx$Al2O3_wtp + Cpx$TiO2_wtp + Cpx$MnO_wtp + Cpx$Na2O_wtp;
    if (P<20.001) {
    A <- 0.0435 - 2.0422 * X + 14.2661 * X^2 - 38.4323 * X^3 + 34.4206 * X^4 - Y *        (1 - (0.5 - X) * 0.012 * P);
    B <- 0.6859 + 1.2269 * X - 37.7330 * X^2 + 119.7173 * X^3 - 109.3990 * X^4;
    G <-  - 0.2832 + 0.9887 * X + 27.5921 * X^2 - 97.3991 * X^3 + 88.8668 * X^4;
    TT <- (2 * G * 1000 / ( - B + sqrt(B^2 - 4 * G * A))) - 273.15;
    if (TT<1250) {
    if (TT>890) {
    T <- TT;
    if (X<0.300) {
    warning("  ONLY CPX COMPOSITION IS INVOLVED IN CALCULATIONS, ACCURACY +-30,C");
    }
    if (X>0.300) {
    warning("  ONLY CPX COMPOSITION IS INVOLVED IN CALCULATIONS, ACCURACY +-20,C");
    }
    }
    if (TT<890) {
    warning("  IS NOT TO BE USED FOR T<890 C");
    }
    }
    if (TT>1250) {
    warning("  IS NOT TO BE USED FOR T>1250 C");
    }
    }
    if (Z>5.0) {
    warning("  CANNOT BE USED FOR (AL2O3+TIO2+MNO+NA2O) IN CPX >5 WT.");
    }
    if (X<0.1) {
    warning("  CANNOT BE USED FOR FE/(FE+MG+CA) IN CPX <0.1");
    }
    if (P>20.001) {
    warning("  IS NOT TO BE USED FOR P>20 KBAR");
    }
    return(data.frame(Name=paste0(Cpx$Name),P=P,T_calc=T));
}

sensors.t.cpx_opx_fonarev_1994_c.args <- function(){
    ars <- list();
    ars$minerals <- c("Cpx", "Opx");
    ars$ranges <- c("P");
    return(ars);
}

#sensors.t.cpx_opx_fonarev_1994_c.test <- function(){
#
#}