Catanorm {GCDkit}R Documentation

Niggli's Molecular Norm (Catanorm)

Description

Calculates the Niggli's Molecular Norm (Catanorm) using the algorithm given by Hutchison (1974).

Usage

Catanorm(WR,precision=getOption("gcd.digits"))

Arguments

WR

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

precision

precision of the result.

Details

Normative minerals of the Catanorm

Parameter Full name Formula
Q Quartz SiO2
C Corundum AlO1.5
Or Orthoclase KO0.5 AlO1.5 3SiO2
Plag Plagioclase Abx An100-x
Ab (Albite) NaO1.5 AlO1.5 3SiO2
An (Anorthite) CaO 2AlO1.5 2SiO2
Lc Leucite KO0.5 AlO1.5 2SiO2
Ne Nepheline NaO0.5 AlO1.5 SiO2
Kp Kaliophilite KO0.5 AlO1.5 SiO2
Ac Acmite NaO0.5 FeO1.5 2SiO2
Ns Sodium metasilicate 2NaO0.5 SiO2
Ks Potassium metasilicate 2KO0.5 SiO2
Hy Hypersthene EnxFs100-x
Di Diopside Wo50 Enx Fs50-x
Wo (Wollastonite) CaO.SiO2
En (Enstatite) MgO.SiO2
Fs (Ferrosillite) FeO.SiO2
Ol Olivine Fox Fa100-x
Fo (Forsterite) 2MgO.SiO2
Fa (Fayalite) 2FeO.SiO2
Cs Calcium orthosilicate 2CaO.SiO2
Mt Magnetite FeO.2FeO1.5
Hm Hematite FeO1.5
Il Ilmenite FeO.TiO2
Tn Sphene CaO.TiO2.SiO2
Pf Perovskite CaO.TiO2
Ru Rutile TiO2
Ap Apatite 9CaO.6PO2.5 CaF2
or with no F 5CaO.3PO2.5
Fr Fluorite CaF2
Py Pyrite FeS2
Cf Calcite CaO.CO2

Value

A numeric matrix 'results'.

Author(s)

Vojtěch Janoušek, vojtech.janousek@geology.cz

References

Hutchison CS (1974) Laboratory Handbook of Petrographic Techniques. John Wiley & Sons, New York, p. 1-527

Examples

    data(sazava)
    accessVar("sazava")
    
    Catanorm(WR)

[Package GCDkit version 6.1 Index]