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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: 19° 45' 50,22" N, 155° 58' 44,18" W

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. %)
46.01
0.93

19.81

9.56
0.11
10.97
9.00
2.73
0.09
0.02




99.23



Molecular
weight
60.08
79.88

101.96

71.85
70.94
40.31
56.08
61.98
94.20
141.95








Molecular
proportion
0.7658
0.0116

0.1943

0.1346
0.0016
0.2721
0.1605
0.0440
0.0010
0.0001





1
ap











0.0005


0.0001





0.0001
328.68
0.05
4
il




0.0116



0.0116











0.0116
151.75
1.77
8
or



0.0057


0.0010






0.0010






0.0010
556.67
0.53
9
ab´



0.2643


0.0440





0.0440







0.0440
524.46
23.10
10
an



0.2986


0.1493




0.1493








0.1493
278.21
41.53
14
zvyšky








0.1230

0.2721











15
di



0.0215




0.0033

0.0074
0.0107








0.0107
226.38
2.43
17
hy´



0.3844




0.1196

0.2648









0.3844
110.21
42.36
20
ol



0.1922




0.1196

0.2648









0.1922
160.32
30.81
22
ne



0.0083


0.0021





0.0041







0.0041
284.11
1.17
22
ab



0.2397


0.0420





0.0399







0.0399
524.46
20.95
Y: 0.9744
D: 0.2086
D1: 0.0164
D2: 0.0164
Mg/(Mg+Fe2+): 0.689
Total of normative wt. % 99.23

Comment

Chemical composition

-

SiO2
64.01
TiO2
0.93
Al2O3
19.81
FeO
9.56
MnO
0.11
MgO
10.97
CaO
9.00
Na2O
2.73
K2O
0.09
P2O5
0.02
Total
99.23
Mg(Mg/Fe2+)
0.67

-

SiO2
40.45
TiO2
5.95
Al2O3
16.44
FeO
13.61
MnO
0.12
MgO
11.93
CaO
7.66
Na2O
2.35
K2O
0.11
P2O5
0.02
LOI
0.33
Total
99.55
Mg(Mg/Fe2+)
0.61

-

SiO2
42.88
TiO2
0.05
Al2O3
20.73
FeO
4.99
MnO
0.07
MgO
19.09
CaO
11.41
Na2O
0.23
K2O
0.03
P2O5
0.03
Total
99.51
Mg(Mg/Fe2+)
0.87