Geology Reference
In-Depth Information
Table 2.8 (continued)
SiO 2
FeO a
TiO 2
Al 2 O 3
Fe 2 O 3
MgO
CaO
SrO
BaO
Na 2 O 2 O
H 2 O
Total
15
49.27
29.56
0.93
Trace
16.26
3.07
99.09
16
45.59
32.46
0.61
1.22
16.25
3.31
99.44
17
48.23
31.40
0.51
0.77
16.02
3.13
100.06
a FeO indicates total FeO + Fe 2 O 3 contents
1 Nepheline from a lava ow at Condobolin, New South Wales (Cundari 1973)
2 Nepheline from a lava ow at Cargelligo, New South Wales (Cundari 1973)
3 Nepheline from a leucite-tephrite, Sabatini, Italy (Cundari 1979)
4
5 Nephelines from a lava ow at the Roman province (Baldridge et al. 1981)
6 Nepheline from a potash ankaratrite, Zaire (Sahama and Wilk 1952)
7 Kalsilite from a venanzite, Italy (Bannister et al. 1953)
8 Kalsilite from a K-rich rock at Zaire (Sahama et al. 1956)
9 - 13 Nephelines from Mt. Vulture volcanic complex (Melluso et al. 1996)
14 - 15 Nepheline from Portobello (Wilkinson and Hensen 1994)
16 - 17 Nepheline from Nombi (Wilkinson and Hensen 1994)
-
 
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