Grt-Opx: Ganguly, 1988 <A>

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source("utilities_tpf.r");

sensors.t.grt_opx_ganguly_1988_a <- function(Grt, Opx, P, ...){
    Opx <- tpf.recalc_minaral("OPX",Opx);
    Grt <- tpf.recalc_minaral("GRT",Grt);

    X <- (Opx$Fe_p2_pfu + Opx$Fe_p3_pfu) / Opx$Mg_pfu;
    Y <- (Grt$Fe_p2_pfu + Grt$Fe_p3_pfu) / Grt$Mg_pfu;
    C <- Grt$Ca_pfu / (Grt$Fe_p2_pfu + Grt$Fe_p3_pfu + Grt$Ca_pfu + Grt$Mg_pfu + Grt$Mn_pfu);
    M <- Grt$Mn_pfu / (Grt$Fe_p2_pfu + Grt$Fe_p3_pfu + Grt$Ca_pfu + Grt$Mg_pfu + Grt$Mn_pfu);
    H <- Grt$Cr2O3_wtp;
    if (H>2) {
    warning(" CANNOT BE USED FOR CR2O3 IN GRT >2 W.P.");
    }
    if (H<1) {
    if (C<0.30) {
    if (M<0.30) {
    T <- (1971 + 11.91 * P + 3000 * (C + M) / 1.9872) / (log(Y / X) + 0.96) - 273.15;
    warning(" EQUATION (11.1).");
    }
    }
    if (C>0.30) {
    warning(" CANNOT BE USED FOR CA/(CA+MG+FE+MN) IN GRT >0.3.");
    }
    if (M>0.30) {
    warning(" CANNOT BE USED FOR MN/(CA+MG+FE+MN) IN GRT >0.3.");
    }
    }
    return(data.frame(Name=paste0(Grt$Name,"-", Opx$Name),P=P,T_calc=T));
}

sensors.t.grt_opx_ganguly_1988_a.args <- function(){
    ars <- list();
    ars$minerals <- c("Grt", "Opx");
    ars$ranges <- c("P");
    return(ars);
}

#sensors.t.grt_opx_ganguly_1988_a.test <- function(){
#
#}