Mesonorm {GCDkit}R Documentation

Improved Mesonorm for granitoid rocks

Description

Calculates eine bessere Mesonorm for granitoids of Mielke & Winkler (1979).

Usage

    Mesonorm(WR, GUI = FALSE, precision = getOption("gcd.digits"))

Arguments

WR

a numerical matrix; the whole-rock data to be normalized.

GUI

logical, is the function called from the GUI?

precision

precision of the result.

Details

This method of norm calculation should yield mineral proportions close to the actual mode of granitoid rocks. The calculated components are:

    Orthoclase, Albite, Anorthite, Quartz, Apatite, Magnetite, 
    Hematite, Ilmenite, Biotite, Amphibole, Calcite, Corundum, 
    Rest
    

If desired, the function plots the Q'-ANOR diagram of Streckeisen & Le Maitre (1979) using the function QANOR.

Value

A numeric matrix 'results'.

Author(s)

Vojtěch Janoušek, vojtech.janousek@geology.cz

References

Mielke P & Winkler HGF (1979) Eine bessere Berechnung der Mesonorm fuer granitische Gesteine. Neu Jb Mineral, Mh 471-480

Streckeisen A & Le Maitre RW (1979) A chemical approximation to the modal QAPF classification of the igneous rocks. Neu Jb Mineral, Abh 136: 169-206

See Also

QANOR

Examples

    data(sazava)
    accessVar("sazava")
    
    Mesonorm(WR)

[Package GCDkit version 6.1 Index]