Initial Reports, Volume 206
Ms 206IR-102
Chapter 2, Table T12. Analyses of grinding contamination and background blank.

Notes: Major element oxides are reported as weight percent and trace elements as parts per million. Note that SiO2 has been subtracted from the grinding error, since pure SiO2 was used to determine grinding contamination. The background blank was determined from drift-corrected intensities and has been subtracted from standard and sample analyses. BDL = below detection limit. n = number of analyses.

Element	Grinding error (n=3)	Background blank (n=4)

SiO2	0	0.1
Al2O3	BDL	0.01
TiO2	BDL	0.01
Fe2O3	BDL	0.01
MgO	BDL	0.01
MnO	BDL	BDL
CaO	BDL	0.1
Na2O	BDL	BDL
K2O	0.01	0.01
P2O3	BDL	0.02
Cr	4.3	19.3
Ni	3.9	3.7
V	BDL	1.7
Sc	BDL	0.9
Ba	BDL	22.2
Sr	BDL	5.8
Y	BDL	1.6
Zr	BDL	9.2
Nb	BDL	BDL