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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:

Major minerals

Accessory minerals

Classification

 - Macro  - Classification

Colour

Structure

Granularity

Texture

Alterations

Petrographic characteristics

Usage

Literature

Photomicrographs

 - Micro 1  - Micro 2

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. %)
49.69
2.90

13.85
2.38
13.64
0.22
3.75
7.90
1.14
2.07
0.75




98.29



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
0.8271
0.0363

0.1358
0.0149
0.1929
0.0031
0.0930
0.1409
0.0184
0.0220
0.0053





1
ap











0.0176


0.0053





0.0053
328.68
1.74
4
il




0.0363



0.0363











0.0363
151.75
5.51
8
or



0.1318


0.0220






0.0220






0.0220
556.67
12.23
9
ab



0.1104


0.0184





0.0184







0.0184
524.46
9.65
10
an



0.1909


0.0955




0.0955








0.0955
278.21
26.56
13
mt







0.0149
0.0149











0.0149
231.54
3.45
14
zvyšky








0.1417

0.0930











15
di



0.0556




0.0168

0.0110
0.0278








0.0278
235.60
6.55
17
hy



0.2070




0.1250

0.0820









0.2070
119.43
24.72
18
q



0.1314
















0.1314
60.08
7.89
Y: 0.7106
D: -0.1165
Mg/(Mg+Fe2+): 0.396
Total of normative wt. % 98.29

Comment

Chemical composition

-

SiO2
49.69
TiO2
2.90
Al2O3
13.85
Fe2O3
2.38
FeO
13.64
MnO
0.22
MgO
3.75
CaO
7.90
Na2O
1.14
K2O
2.07
P2O5
0.75
LOI
1.54
Total
99.83
Mg(Mg/Fe2+)
0.33
A/CNK
0.75
A/NK
3.36

Kar & Bhattacharya, 2010

-

SiO2
52.03
TiO2
1.72
Al2O3
15.53
Fe2O3
1.36
FeO
9.44
MnO
0.16
MgO
5.50
CaO
8.19
Na2O
2.78
K2O
1.51
P2O5
0.42
LOI
1.28
Total
99.92
Mg(Mg/Fe2+)
0.51
A/CNK
0.74
A/NK
2.50

Kar & Bhattacharya, 2010

-

SiO2
66.57
TiO2
0.73
Al2O3
13.25
Fe2O3
2.38
FeO
4.50
MnO
0.10
MgO
0.31
CaO
1.89
Na2O
4.12
K2O
5.28
P2O5
0.16
Total
99.29
Mg(Mg/Fe2+)
0.11
A/CNK
0.83
A/NK
1.06