For Cpx-Opx. Only for garnet peridotites. Constraint for CPX: 2*(CA/(CA+MG)) < 1.
This sensor from TPF collection
Article | Finnerty, A. A., Boyd, F. R. Evaluation of thermobarometers for garnet peridotites, 1984 [ref] (clarification required) |
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Callibration | |
Precision | |
Ranges | |
Renew sensors |
source("utilities_tpf.r"); sensors.t.cpx_opx_finnerty_boyd_1984 <- function(Cpx, P, usePFU = FALSE, ...){ row_names = Cpx$Name; if(!usePFU) Cpx <- tpf.recalc_minaral("CPX",Cpx); X <- Cpx$Ca_pfu / (Cpx$Ca_pfu + Cpx$Mg_pfu); T <- rep(NaN, nrow(Cpx)); if (2 * X<1) { T <- exp((log(1 - 2 * X) + 5.37 * log(1941 + 5.04 * P)) / 5.37) - 273.15; } return(data.frame(Name=paste0(row_names),P=P,T_calc=T)); } sensors.t.cpx_opx_finnerty_boyd_1984.args <- function(){ ars <- list(); ars$minerals <- c("Cpx"); ars$ranges <- c("P"); return(ars); } sensors.t.cpx_opx_finnerty_boyd_1984.test <- function(){ sensors.t.cpx_opx_finnerty_boyd_1984(data.frame(Name=c('Test'), SiO2_wtp=c(50), CaO_wtp=c(10), MgO_wtp=c(20)),15); }