Table 2.
CIPW norms of Middle Proterozoic basement rocks in table 1.
[Numbers 1-5 refer to chemical sample locations shown on plate 1]
Mineral
Garnet monzogranite (
Ygt
)
Biotite gneiss (
Ybg
)
Hornblende gneiss (
Yhg
)
1
2
3
4
5
Quartz
28.8
31.1
24.8
32.1
20.5
Orthoclase
26.6
9.62
30.0
27.6
29.8
Albite
30.5
37.9
21.1
25.7
24.0
Anorthite
6.06
16.3
14.0
7.88
12.1
Corundum
2.26
.367
.245
1.14
1.15
Hypersthene
4.09
.988
6.23
3.08
6.74
Magnetite
.866
2.89
1.70
1.39
1.40
Ilmenite
.500
.579
1.41
.674
1.81
Apatite
.240
.145
.458
.384
.678
U.S. Geological Survey
,
U.S. Department of the Interior
This page is https://pubs.usgs.gov/bulletin/b2123/table2.html
Contact:
Scott Southworth
Last modified 08.29.00
