Bt-Opx: Sengupta, 1990

Details

This sensor from TPF collection

Article	Sengupta, P., Dasgupta, S., Bhattacharya, P. K., Mukherjee, M. An orthopyroxene–biotite geothermometer and its application in crustal granulites and mantle-derived rocks, 1990 [ref]
Collibration
Precision	± 50°C
Ranges	600 - 1300 °C, 6 - 60 kbar
Renew sensors

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Source

source("utilities_tpf.r");

sensors.t.bt_opx_sengupta_1990 <- function(Bt, Opx, P, ...){
    Opx <- tpf.recalc_minaral("OPX",Opx);
    Bt <- tpf.recalc_minaral("BT",Bt);

    XM <- Opx$Mg_pfu / (Opx$Mg_pfu + Opx$Fe_p2_pfu + Opx$Fe_p3_pfu);
    XF <- (Opx$Fe_p2_pfu + Opx$Fe_p3_pfu) / (Opx$Mg_pfu + Opx$Fe_p2_pfu + Opx$Fe_p3_pfu);
    KO <- (Opx$Fe_p2_pfu + Opx$Fe_p3_pfu) / Opx$Mg_pfu;
    XT <- Bt$Ti_pfu / (Bt$Fe_p2_pfu + Bt$Fe_p3_pfu + Bt$Mg_pfu + Bt$Ti_pfu + Bt$Al_c6_pfu);
    XA <- Bt$Al_c6_pfu / (Bt$Fe_p2_pfu + Bt$Fe_p3_pfu + Bt$Mg_pfu + Bt$Ti_pfu + Bt$Al_c6_pfu);
    KB <- (Bt$Fe_p2_pfu + Bt$Fe_p3_pfu) / Bt$Mg_pfu;
    K <- KO / KB;
    T1 <- (4130 + 603 * (XM - XF) - 4423 * XT - 3595 * XA + 0.017 * P * 1000) / (1.9872 * log(K) + 3.27) - 273;
    T2 <- (4130                   - 4423 * XT - 3595 * XA + 0.017 * P * 1000) / (1.9872 * log(K) + 3.27) - 273;
    #if (T2>899) {
    #T <- T2;
    #}
    #if (T1<901) {
    #T <- T1;
    #}
    return(data.frame(Name=paste0(Bt$Name,"-", Opx$Name),P=P,T_calc=T1));
}

sensors.t.bt_opx_sengupta_1990.args <- function(){
    ars <- list();
    ars$minerals <- c("Bt", "Opx");
    ars$ranges <- c("P");
    return(ars);
}

#sensors.t.bt_opx_sengupta_1990.test <- function(){
#
#}

tpf, Bt, Opx