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

Category: Volcanic

Type

Commons

Name origin

Locality

GPS: 40° 49' 9,015" N, 14° 25' 28,588" 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. %)
48.31
1.00

13.58
8.40

0.15
7.90
14.35
1.69
4.27
0.65




100.30



Molecular
weight
60.08
79.88

101.96
159.69

70.94
40.31
56.08
61.98
94.2
141.95








Molecular
proportion
0.8041
0.0125

0.1332
0.0526

0.0021
0.1960
0.2559
0.0273
0.0453
0.0046





1
ap











0.0152


0.0046





0.0046
328.68
1.50
4
il




0.0021



0.0021











0.0021
151.75
0.32
4
tn´



0.0104
0.0104






0.0104








0.0104
196.07
2.04
8
or



0.2720


0.0453






0.0453






0.0453
556.67
25.23
9
ab´



0.1636


0.0273





0.0273







0.0273
524.46
14.30
10
an



0.1212


0.0606




0.0606








0.0606
278.21
16.86
13
hm







0.0526












0.0526
159.69
8.40
14
zvyšky








0.0000

0.1960
0.1697










15
di



0.3393




0.0000

0.1697
0.1697








0.1697
216.56
36.74
17
hy´



0.0263




0.0000

0.0263









0.0263
100.39
2.64
20
ol



0.0132




0.0000

0.0263









0.0132
140.69
1.85
21
pf




0.0104






0.0104








0.0104
135.98
1.41
22
ne



0.0526


0.0131





0.0263







0.0263
284.11
7.47
22
ab



0.0059


0.0141





0.0010







0.0010
524.46
0.51
Y: 0.9328
D: 0.1287
D1: 0.1156
D2: 0.1052
Mg/(Mg+Fe2+): 1.000
Total of normative wt. % 100.30

Comment

Chemical composition

-

SiO2
48.31
TiO2
1.00
Al2O3
13.58
Fe2O3
8.40
FeO
0.00
MnO
0.15
MgO
7.90
CaO
14.35
Na2O
1.69
K2O
4.27
P2O5
0.65
LOI
0.22
Total
100.52
Mg(Mg/Fe2+)
všetko Fe je ako Fe3+
A/CNK
0.41
A/NK
1.83

-

SiO2
48.21
TiO2
1.02
Al2O3
13.42
Fe2O3
8.75
FeO
0.00
MnO
0.15
MgO
7.97
CaO
13.96
Na2O
1.54
K2O
4.29
P2O5
0.69
Total
100.00
Mg(Mg/Fe2+)
všetko Fe je ako Fe3+
A/CNK
0.41
A/NK
1.87