Cpx-Opx: Fonarev, Graphchikov, 1982

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source("utilities_tpf.r");

sensors.t.cpx_opx_fonarev_graphchikov_1982 <- function(Cpx, Opx, P, ...){
    Opx <- tpf.recalc_minaral("OPX",Opx);
    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 <- (Opx$Fe_p2_pfu + Opx$Fe_p3_pfu) / (Opx$Mg_pfu + Opx$Fe_p2_pfu + Opx$Fe_p3_pfu + Opx$Ca_pfu);
    Z <- Cpx$Al2O3_wtp + Cpx$TiO2_wtp + Cpx$MnO_wtp + Cpx$Na2O_wtp;
    if (P<20.001) {
    A <- 1.9943 * X + 19.2401 * X^2 - 63.0069 * X^3 + 16.7365 * X^4 - Y * (1 + 0.000673813 * P);
    B <-  - 0.2018 * X - 75.909 * X^2 + 245.2007 * X^3 - 141.3534 * X^4;
    G <- 0.3893 * X + 61.3861 * X^2 - 205.0557 * X^3 + 147.2069 * X^4;
    T <- (2 * G * 1000 / ( - B + sqrt(B^2 - 4 * A * G))) - 273.15;
    if (T<820) {
    if (T<600) {
    warning(" IS NOT TO BE USED FOR T<600 C");
    }
    if (Z>5.0) {
    warning(" IS NOT TO BE USED FOR (AL2O3+TIO2+MNO+NA2O) IN CPX >5 W.");
    }
    if (X<0.1) {
    warning(" IS NOT TO BE USED FOR FE/(FE+MG+CA) IN CPX <0.1");
    }
    }
    if (T>820) {
    warning(" IS NOT TO BE USED FOR T>820 C");
    }
    }
    if (P>20.001) {
    warning(" IS NOT TO BE USED FOR P>20 KBAR");
    }
    return(data.frame(Name=paste0(Cpx$Name,"-", Opx$Name),P=P,T_calc=T));
}

sensors.t.cpx_opx_fonarev_graphchikov_1982.args <- function(){
    ars <- list();
    ars$minerals <- c("Cpx", "Opx");
    ars$ranges <- c("P");
    return(ars);
}

#sensors.t.cpx_opx_fonarev_graphchikov_1982.test <- function(){
#
#}