Grt-Bt: Hodges, Spear, 1982

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source("utilities_tpf.r");

sensors.t.grt_bt_hodges_spear_1982 <- function(Grt, Bt, P, ...){
    Bt <- tpf.recalc_minaral("BT",Bt);
    Grt <- tpf.recalc_minaral("GRT",Grt);

    X <- (Grt$Fe_p2_pfu + Grt$Fe_p3_pfu) / (Grt$Mg_pfu + Grt$Ca_pfu + Grt$Mn_pfu + Grt$Fe_p2_pfu + Grt$Fe_p3_pfu);
    Y <- Grt$Mg_pfu / (Grt$Mg_pfu + Grt$Ca_pfu + Grt$Mn_pfu + Grt$Fe_p2_pfu + Grt$Fe_p3_pfu);
    Z <- Grt$Ca_pfu / (Grt$Mg_pfu + Grt$Ca_pfu + Grt$Mn_pfu + Grt$Fe_p2_pfu + Grt$Fe_p3_pfu);
    F <- Grt$Mn_pfu / (Grt$Mg_pfu + Grt$Ca_pfu + Grt$Mn_pfu + Grt$Fe_p2_pfu + Grt$Fe_p3_pfu);
    N <- Grt$Mg_pfu / (Grt$Fe_p2_pfu + Grt$Fe_p3_pfu);
    M <- (Bt$Fe_p2_pfu + Bt$Fe_p3_pfu) / Bt$Mg_pfu;
    A <- Z^2 + X * Z + Z * F + Y * Z;
    T <- (12454 + 0.057 * P * 1000 + 3 * 3300 * A) / (4.662 + 3 * 1.5 * A - 3 * 1.9872 * log(N * M)) - 273;
    return(data.frame(Name=paste0(Grt$Name,"-", Bt$Name),P=P,T_calc=T));
}

sensors.t.grt_bt_hodges_spear_1982.args <- function(){
    ars <- list();
    ars$minerals <- c("Grt", "Bt");
    ars$ranges <- c("P");
    return(ars);
}

#sensors.t.grt_bt_hodges_spear_1982.test <- function(){
#
#}