Trace Elements and Minerals in Fumarolic Sulfur: The Case of Ebeko Volcano, Kuriles

Table 1

Average composition of Ebeko andesites.

Oxide	Wt.%	Element	ppm	Element	ppm
SiO2	58.1	Ag	0.40	Ni	26
TiO2	0.7	As	4.40	Pb	8.1
Al2O3	17.3	Ba	422	Rb	44
Fe2O3	8.0	Br	2.0	Sb	0.44
MnO	0.2	Cd	0.32		0.05
MgO	3.3	Cr	51	Sn	1.7
CaO	6.9	Cs	1.6	Sr	391
Na2O	3.2	Cu	78		0.001
K2O	2.2	Ga	13.8	Th	4.8
P2O5	0.20	Ge	2.4	U	1.6
			0.08	V	133
		I	0.34	Y	21
		Mo	1.2	Zn	65
		Nb	2.25	Zr	109

Average of 12 analyses. Taken from the “composition of average andesite,” Voitkevich et al., 1990.