Table T12. Analyses of grinding contamination and background blank.
Element
Grinding
error
(n = 3)
Background
blank
(n = 4)
SiO2 0 0.10
Al2O3 BDL 0.01
TiO2 BDL 0.01
Fe2O3 BDL 0.01
MgO BDL 0.01
MnO BDL BDL
CaO BDL 0.10
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

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. This table is also available in ASCII.