Geology Reference
In-Depth Information
Table 4.12 Lamproitic rocks from Leucite Hills, Wyoming, U.S.A
SiO
2
TiO
2
ZrO
2
Al
2
O
3
Fe
2
O
3
FeO
MnO
MgO
CaO
SrO
BaO
Na
2
O
2
O
2
O
5
LOI
Total
1
46.50
2.30
0.19
11.50
5.30
0.14
0.09
8.06
7.63
0.41
0.62
2.88
10.40
1.81
2.80
100.63
2
-
47.50
2.35
0.19
11.80
5.42
0.14
0.09
8.24
7.80
0.42
0.63
2.94
10.60
1.85
99.97
3
46.50
2.30
0.19
11.50
5.30
0.14
0.09
8.06
7.63
0.41
0.62
2.88
10.40
1.81
2.80
100.6
4
53.07
2.41
0.26
8.96
3.86
0.91
0.08
11.17
3.56
0.27
0.34
1.15
10.72
1.24
1.72
99.8
5
55.14
2.58
0.27
10.35
3.27
0.62
0.06
6.41
3.45
0.26
0.52
1.21
11.77
1.40
2.24
99.59
6
-
47.50
2.35
0.19
11.18
5.42
0.14
0.09
8.24
7.80
0.42
0.63
2.94
10.60
1.85
99.97
7
-
53.80
4.42
0.02
10.60
3.55
1.09
0.10
7.59
5.48
0.22
0.64
1.56
11.20
1.66
101.93
1
2 Wyomingite from Hatcher Mesa (Barton and Van Bergen 1981)
3 Chemical analysis of Wyomingite 17472 from Hatcher Mesa (after Barton and Van Bergan 1981)
4 Olivine Orendite, South Table Mountain, Leucite Hills (Carmichael 1967). It also includes 0.08 % Cr
2
O
3
5 Orendite, North Table Mountain (Carmichael 1967). It also includes 0.04 % Cr
2
O
3
6 Analyses recalculated on volatile-free basis (after Barton and Van Bergan 1981)
7 Average composition (volatile-free) of 20 wyomingites and orendites from Leucite Hills, compiled from unpublished analyses and that of Carmicheal 1967
(after Barton and Van Bergan 1981)
-
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