Table 6: Representative chemical composition of alkaline rocks from Caieiras (1 to 5) and Sueste (6 to 8).

CaieirasSueste
12345678Average

K2Oa1.454.854.862.921.832.215.163.673.37
CaOa11.25.804.106.8112.510.50.585.737.15
3.192.361.182.403.863.370.172.262.35
MnOa0.180.180.150.210.160.210.190.120.18
12.95.994.577.7112.513.22.234.797.99
Vb275.1164.071.0171.8239.9257.013.0187.4172.40
Crb505.1229.037.3303.5303.0275.58
Cob55.019.18.0015.848.244.68.7728.50
Nib358.923.617.962.4295.5309.619.6155.36
Cub53.37.904.2051.353.133.96
Znb57.597.095.394.3122.5114.1181.080.0105.21
Rbb53.0142.0142.580.547.149.1322.096.5116.59
Srb960.9820.8132916201744102315201288.24
Mob2.147.006.072.572.003.823.93
Csb1.201.902.403.670.551.004.332.15
Bab510.2946.011911070906.4558.019.01330816.33
Dyb5.967.106.605.948.116.906.906.79
Pbb13.314.714.55.217.2032.011.914.12

—: not detected; awt %; bppm, —not analyzed. Using the procedure described in Janasi et al.[21], major, minor, and trace elements were determined by inductively coupled plasma-mass spectrometer (ICP-MS).