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

Pr

Pyrite

FeS2

Cf

Calcite

CaO.CO2

Value

A numeric matrix 'results'.

Author(s)

Vojtech Janousek, vojtech.janousek@geology.cz

References

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


[Package GCDkit version 3.00 Index]