Cpx-Opx: Kretz, 1982 <A>

Cpx slope of the solvus surface based on Natural data for associated Ca pyroxene (Cpx) and orthopyroxene (Opx) or pigeonite are combined with experimental data for Fe-free pyroxenes.

Использовать Проверить

source("utilities_tpf.r");

sensors.t.cpx_opx_kretz_1982_a <- function(Cpx, usePFU = FALSE, ...){
    
    row_names = Cpx$Name;
    
    if(!usePFU) Cpx <- tpf.recalc_minaral("CPX",Cpx);

    X <- Cpx$Fe_p2_pfu / (Cpx$Fe_p2_pfu + Cpx$Mg_pfu);
    Y <- Cpx$Ca_pfu / (Cpx$Ca_pfu + Cpx$Mg_pfu + Cpx$Fe_p2_pfu);
    TH <- (1000 / (0.468 + 0.246 * X - 0.123 * log(1 - 2 * Y))) - 273.15;
    TL <- (1000 / (0.054 + 0.608 * X - 0.304 * log(1 - 2 * Y))) - 273.15;
    
    T <- c();
    
    for (i in 1:nrow(Cpx)){
        if (TH<1080.0 && TL>1080.0) {
            T <- c(T,NA);
            next;
        }
        if (TH>1080.0) {
            T <- c(T,TH);
            next;
        }
        if (TL<1080.0) {
            T <- c(T,TL);
            next;
        }
    }
  
    return(data.frame(Name=row_names,T_calc=T));
}

sensors.t.cpx_opx_kretz_1982_a.args <- function(){
    ars <- list();
    ars$minerals <- c("Cpx");
    ars$ranges <- c();
    return(ars);
}

#sensors.t.cpx_opx_kretz_1982_a.test <- function(){
#
#}