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Department of Mineralogy and Petrology
Faculty of Natural Sciences
Comenius University in Bratislava

Category: Plutonic

Type

Commons

Name origin

Locality

GPS: 48° 21' 52,47" N, 19° 46' 17,04" E

Major minerals

Accessory minerals

Classification

- Macro - Classification

Colour

Structure

Granularity

Texture

Alterations

Petrographic characteristics

Usage

Literature

Photomicrographs

- Micro 1 - Micro 2 - Micro 3 - Micro 4

Normative composition

Step of calculation
Normative minerals



SiO2
TiO2
ZrO2
Al2O3
Fe2O3
FeO
MnO
MgO
CaO
Na2O
K2O
P2O5
F
S
CO2

Total
Molar proportion of normative mineral
Molecular mass of normative mineral
Weight % of normative mineral



Oxide
(wt. %)
70.87
0.25

15.28
0.13
1.56
0.04
0.45
3.12
4.64
1.43
0.07




97.84



Molecular
weight
60.08
79.88

101.96
159.69
71.85
70.94
40.31
56.08
61.98
94.20
141.95








Molecular
proportion
1.1796
0.0031

0.1499
0.0008
0.0223
0.0006
0.0112
0.0556
0.0749
0.0152
0.0005





1
ap











0.0016


0.0005





0.0005
328.68
0.16
4
il




0.0031



0.0031











0.0031
151.75
0.47
8
or



0.0911


0.0152






0.0152






0.0152
556.67
8.45
9
ab



0.4492


0.0749





0.0749







0.0749
524.46
39.26
10
an



0.1080


0.0540




0.0540








0.0540
278.21
15.02
10
c






0.0058













0.0058
101.96
0.59
13
mt







0.0008
0.0008











0.0008
231.54
0.19
14
zvyšky








0.0183

0.0112











17
hy



0.0295




0.0183

0.0112









0.0295
119.99
3.54
18
q



0.5019
















0.5019
60.08
30.15
Y: 0.6777
D: -0.5019
Mg/(Mg+Fe2+): 0.378
Total of normative wt. % 97.84

Comment

Chemical composition

-

SiO2
70.87TiO2
0.25Al2O3
15.28Fe2O3
0.13FeO
1.56MnO
0.04MgO
0.45CaO
3.12Na2O
4.64K2O
1.43P2O5
0.07LOI
1.90Total
99.74Mg(Mg/Fe2+)
0.32A/CNK
1.03A/NK
1.66

-

SiO2
71.37TiO2
0.33Al2O3
15.50Fe2O3
0.28FeO
0.71MnO
0.02MgO
0.37CaO
3.27Na2O
4.32K2O
1.66P2O5
0.17LOI
1.80Total
99.80Mg(Mg/Fe2+)
0.41A/CNK
1.04A/NK
1.74