====== Cpx-Opx: Fonarev, Graphchikov, 1982 ======

IS NOT TO BE USED FOR (AL2O3+TIO2+MNO+NA2O) IN CPX >5 W.

IS NOT TO BE USED FOR P>20 KBAR

=== Details ===

<WRAP center round info 60%>
This sensor from [[:about_tpf|TPF]] collection
</WRAP>

^ Article | Fonarev V.I., Graphchikov A.A. //Two-pyroxene geo-thermometer// Mineral. zhurnal, v. 4, N 5, p. 3-12, 1982. (in Russian) |
^ Callibration |  |
^ Precision |  |
^ Ranges | 600-820 °C  |
^ Renew sensors |  |


<use:sensors.t.cpx_opx_fonarev_graphchikov_1982>
<test:sensors.t.cpx_opx_fonarev_graphchikov_1982>

<WRAP center round todo 60%>
  * <del>заголовок</del>
  * краткое описание
  * статья
  * ссылка
  * карточка
  * подробное описание
  * <del>код</del>
  * тест
</WRAP>

=== Source ===
<Code linenums lang-r>
source("utilities_tpf.r");

sensors.t.cpx_opx_fonarev_graphchikov_1982 <- function(Cpx, Opx, P, usePFU=FALSE, ...){

    row_names = paste0(Cpx$Name,"-", Opx$Name);
 
    if(!usePFU) {
        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;

    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;

    T<-ifelse(T>820,T,'T too high');
    T<-ifelse(T<600,T,'T too low');
    
    T<-ifelse(Z>5.0,T,'Composition out of bounds');
    T<-ifelse(X<0.1,T,'Composition out of bounds');    

    T<-ifelse(P<20,T,'P too high');    

    return(data.frame(Name=row_names,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(){
#
#}
</Code>

{{tag> tpf Cpx Opx AP_igroup fixed}}