Norman version 2
User's Guide

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III. Calculations

The command "Calculations" serves for choosing the required calculation scheme either from the list of the installed standard modules, or the list of the available user-defined functions. The exact appearance of the relevant menus will thus be changing depending on the current configuration of the given NORMAN installation. The standard modules provided with NORMAN are reviewed in the following tables (Tabs 1-4). Most of the configuration information is stored in the file QNORMAN.DAT (see Appendix 2).

Error in calculation (most commonly division by zero) causes an error message to be displayed, specifying in which module, at which sample number and parameter the error occurred. Then the editor (see section II.) is called automatically to enable correcting of the problematic sample.

For the CIPW norm, several options are available, namely whether or not to recast the calculated normative minerals to 100%, whether to use CO2, whether cancrinite is present and whether to calculate spinel (only for ultrabasic rocks). These options are accessible via the "Options setup|CIPW options" menu described in the section VII.

There are also available several user-defined functions, whose details are given in Tabs 5-6. These are stored in plain text files (*.DEF) and can be edited using any text editor or, better still, by the editor provided for this purpose in the INSTALL module. They can call other user-defined functions, standard modules as well as their own parameters defined previously. In detail is their structure dealt with in section VIII. and Appendix 3 concerned with the INSTALL module and advanced techniques of using NORMAN.


Table 1: Overview of the standard modules provided with NORMAN

Menu item1

Default
suffix2

Module name3

Calculation scheme
(
reference)

Granit.mesonorm

.MEZ

MEZONORM.EXE

Improved granite mesonorm (Mielke & Winkler, 1979)

Kohler-Raaz

.KOH

KOHLER.EXE

(Köhler & Raaz, 1951)

C.I.P.W.

.CPW

CIPW.EXE

CIPW norm (Hutchison, 1974, 1975 and references therein)

C.I.P.W. with Hb & Bi

.CPH

CIPWHB.EXE

Modified CIPW with hornblende and biotite Hutchison, 1975)

Catanorm

.KTN

KATANORM.EXE

Niggli's molecular norm (Catanorm) (Hutchison, 1974 and references therein)

De La Roche

.RCH

LAROCHE.EXE

R1-R2 multicationic values (De la Roche et al., 1980)

Debon-Le Fort

.DLF

DEBON.EXE

(Debon & Le Fort, 1983, 1988)

Niggli

.NGL

NIGGLI.EXE

Niggli's values (Niggli, 1948)

Miscellany

.MSC

PETRCALC.EXE

Various petrochemical indexes, such as total iron as FeO, mg number, Agpaitic index, molar A/NK and A/CNK, AFM values (Irvine & Baragar, 1971), Differentiation index (Larsen, 1938), Solidification index.

 

1 as they appear on the menu "Calculations"
2 default suffix of the ASCII-saved results, its is also used as reference in the user-defined functions
3 names of the individual modules (their QuickBasic sources are also provided)


Table 2: Calculated parameters of the recalculation schemes specified in Table 1

Menu item

N1

Calculated parameters

S2

Granit.mesonorm

13

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

y

Kohler-Raaz

4

qz, F, fm, F_fm

y

C.I.P.W.

36

Q, C, Or, Ab, An, Lc, Ne, Kp, Nc, Ac, Ns, Ks, Di (MgDi, FeDi), Wo, Hy (En, Fs), Ol (Fo, Fa), Cs, Mt, Il, Hm, Tn, Pf, Ru, Ap, Fr, Pr, Cc, Sp (MgSp, FeSp)

y

C.I.P.W. with Hb & Bi

48

Q, C, Or, Ab, An, Lc, Ne, Kp, Nc, Ac, Ns, Ks, Di (MgDi, FeDi), Wo, Hy (En, Fs), Ol (Fo, Fa), Cs, Mt, Il, Hm, Tn, Pf, Ru, Ap, Fr, Pr, Cc, Sp(MgSp, FeSp), Bi (MgBi, FeBi), Ho (Act, (MgAct, FeAct), Ed (MgEd, FeEd), Ri)

y

Catanorm

31

Q, C, Or, Plag (Ab, An), Lc, Ne, Kp, Ac, Ns, Ks, Hy, Di, (Wo, En, Fs), Ol (Fo, Fa), Cs, Mt, Hm, Il, Tn, Pf, Ru, Ap, Fr, Pr, Cc

y

De La Roche

2

R1, R2

n

Debon-Le Fort

11

Q, P, A, B, F, (Na+K), K/(Na+K), Mg/(Fe+Mg), Q(quartz), B(dark m.), F(feldsp)

n

Niggli

11

si, al, fm, c, alk, k, mg, ti, p, c/fm, qz

n

Miscellany

17

FeOt, FeOt\MgO, FeOt\{FeOt&MgO}, Na2O\K2O, K2O\Na2O, Na2O&K2O, Agpaitic index, Fe2O3\FeO,mg#, Mg#, A, F, M, A\NK, A\CNK, DiL, SI

n


Table 3: Normative minerals of the standard CIPW norm (after Hutchison, 1974, 1975)

Parameter

Full name

Formula

Molecular weight

Q

Quartz

SiO2

60.08

C

Corundum

Al2O3

101.96

Or

Orthoclase

K2O.Al2O3.6SiO2

556.64

Ab

Albite

Na2O.Al2O3.6SiO2

524.42

An

Anorthite

CaO.Al2O3.2SiO2

278.20

Lc

Leucite

K2O.Al2O3.4SiO2

436.48

Ne

Nepheline

Na2O.Al2O3.2SiO2

284.10

Kp

Kaliophilite

K2O.Al2O3.2SiO2

316.32

Nc

Sodium carbonate

Na2O.CO2

105.99

Ac

Acmite

Na2O.Fe2O3.4SiO2

461.99

Ns

Sodium metasilicate

Na2O.SiO2

122.06

Ks

Potassium metasilicate

K2O.SiO2

154.28

Di

Diopside

 

 

MgDi

(Mg-diopside)

CaO.MgO.2SiO2

216.55

FeDi

(Fe-diopside)

CaO.FeO.2SiO2

248.09

Wo

Wollastonite

CaO.SiO2

116.16

Hy

Hypersthene

 

 

En

(Enstatite)

MgO.SiO2

100.39

Fs

(Ferrosillite)

FeO.SiO2

131.93

Ol

Olivine

 

 

Fo

(Forsterite)

2MgO.SiO2

140.70

Fa

(Fayalite)

2FeO.SiO2

203.78

Cs

Dicalcium silicate

2CaO.SiO2

172.24

Mt

Magnetite

FeO.Fe2O3

231.54

Il

Ilmenite

FeO.TiO2

151.75

Hm

Hematite

Fe2O3

159.69

Tn

Sphene

CaO.TiO2 SiO2

196.06

Pf

Perovskite

CaO.TiO2

135.98

Ru

Rutile

TiO2

79.90

Ap

Apatite

3CaO.P2O5.1/3CaF2

336.21

Fr

Fluorite

CaF2

78.08

Pr

Pyrite

FeS2

119.98

Sp1,2

Spinel

 

 

MgSp1

(Mg-spinel; spinel s.s.)

CaO.MgO.2SiO2

142.27

FeSp1

(Fe-spinel; hercynite)

CaO.FeO.2SiO2

173.81

Cc1

Calcite

CaO.CO2

100.09

 

1 these parameters calculated only if specified in "Options change|CIPW options"
2 spinel calculated only for ultrabasic rocks (rocks with SiO2<45%; Hutchison 1975)


Table 4: Additional minerals of the CIPW norm with hornblende and biotite (Hutchison, 1975)

Parameter

Full name

Formula

Molecular weight

Bi

Biotite

 

 

MgBi

(Phlogopite)

KO0.5 3MgO AlO1.5 3SiO2

798.50

FeBi

(Annite)

KO0.5 3FeO AlO1.5 3SiO2

987.74

Ho

Hornblende

 

 

Act

Actinolite

 

 

MgAct

(Tremolite)

2CaO 5MgO 8SiO2

794.35

FeAct

(Ferroactinolite)

2CaO 5FeO 8SiO2

952.05

Ed

Edenite

 

 

MgEd

(Edenite)

NaO0.5 2CaO 5MgO AlO1.5 7SiO2

1632.48

FeEd

(Ferroedenite)

NaO0.5 2CaO 5FeO AlO1.5 7SiO2

1947.88

Ri

Riebeckite

2NaO0.5 2FeO1.5 3FeO 8SiO2

917.87


Table 5: Overview of the user-defined functions provided with NORMAN

Menu item1

Default suffix2

Module name3

Calculation scheme (reference)

Q'-ANOR

.STR

STR.DEF

Chemical approximation to the modal QAPF classification scheme (Streckeisen & Le Maitre, 1979)

Maniar & Piccoli

.MAN

MAN.DEF

Major-element based classification of granitoids (Maniar & Piccoli, 1989)

Zircon saturation

.ZWH

ZWH.DEF

Zircon solubility in crustal melts at 750oC (Watson & Harrison, 1983)

Apatite saturation

.AWH

AWH.DEF

Apatite solubility in leucocratic melts at 750 oC (Harrison & Watson, 1984)

CIPW-based values

.PAR

PAR.DEF

sum of salic and femic normative minerals from the CIPW norm; differentiation index (Thornton & Tuttle, 1960)

Catanorm from CIPW

.KFC

KFC.DEF

Catanorm from CIPW by coefficients (Hutchison, 1975)

Mode from CIPW

.MFC

MFC.DEF

Mode from CIPW by coefficients (Hutchison, 1975)

Alkaline Sylvester

.ALK

ALK.DEF

Discrimination between alkaline granite, calc-alkaline granite, and strongly peraluminous granite with SiO2 > 68 % (Sylvester, 1989)

 

1 as they appear in the menu "Calculations|User defined"
2 default suffix of the ASCII saved results, also used as a reference in the user-defined functions
3 names of individual modules (*.DEF)


Table 6: Calculated parameters of the recalculation schemes specified in Table 5

Menu item

N1

Calculated parameters

S2

Q'-ANOR

2

Q', ANOR

n

Maniar & Piccoli

13

FeOtot, FeOMgO, FeO\FeOMgO, A\NK, A\CNK, @sum1, A1, F1, M1, @sum2, A2, F2, C2

n

Zircon saturation

5

CatSum, M, lnDZr, DZr, Zr

n

Apatite saturation

1

lnDP

n

CIPW-based values

3

Salic, Femic, DI

n

Catanorm from CIPW

21

Q, C, Or, Ab, An, Lc, Ne, MgDi, FeDi, Di, Wo, En, Fs, Hy, Fo, Fa, Ol, Mt, Il, Ap, Cc

y

Mode from CIPW

21

Q, C, Or, Ab, An, Lc, Ne, MgDi, FeDi, Di, Wo, En, Fs, Hy, Fo, Fa, Ol, Mt, Il, Ap, Cc

y

Alkaline Sylvester

2

X, Y

n

 

1 number of calculated parameters
2 shall be their sum also calculated? (y/n)

 


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