Initial Reports, Volume 206
Ms 206IR-102
Chapter 2, Table T15. Precision and accuracy of inductively coupled plasma-atomic emission spectrometry analyses on the JY-2000, Leg 206.

Notes: Standards analyzed as a check on precision and accuracy. Precision is calculated as the standard deviation of n analyses divided by the average value. BDL = below detection limit; NR = not reported. For elements with near background concentrations, the precision is artificially high (i.e., the actual precision is much better than suggested by the numbers). All values have been normalized to 100% volatile free. * = Sparks and Zuleger (1995), ** = Bach et al. (1996), *** = following Govindarasu (1994).

	AII-92-29-1: n=3	Precision (%)	Published value	BAS-140: n=2	Precision (%)	Published value*	BAS-148: n=5	Precision (%)	Published value**	BIR-1: n=3	Precision (%)	Published value***	BOB-1: n=3	Precision (%)	Published value***	JA-1: n=3	Precision (%)	Published value***	JP-1: n=3	Precision (%)	Published value

Major element (wt%):
SiO2	48.31	2.4	49.39	51.06	1.1	50.28	49.03	2.1	49.31	48.35	1.5	47.15	50.83	0.6	50.48	64.2	1.4	64.1	44.55	2.40	41.45
Al2O3	15.97	0.5	15.3	14.29	0.6	14.57	15.65	1.8	15.59	15.33	1.8	15.15	16.23	1.6	16.57	14.72	2.4	14.99	3.16	2.00	0.61
TiO2	1.79	2.4	1.73	1.02	0.4	0.99	0.9	5.2	0.9	0.96	2.6	0.95	1.29	5.2	1.27	0.82	2.1	0.87	0.01	7.00	NR
Fe2O3	10.95	5.3	10.72	10.73	0.2	11.17	10.26	8.2	9.96	10.92	8.6	11.11	8.82	4.7	8.48	7.84	15.9	6.95	8.18	7.80	8.16
MgO	7.66	3.1	7.32	8.27	0	8.13	8.66	8.6	8.61	9.39	5.1	9.56	7.44	4.3	7.69	1.77	3.7	1.61	42.72	3.50	43.73
MnO	0.17	2.9	0.18	0.17	1.7	0.18	0.16	7	0.17	0.15	6.8	0.17	0.13	0.2	0.13	0.14	1.6	0.15	0.12	6.50	0.12
CaO	11.41	2	11.02	12.53	3.5	12.47	12.93	2.7	12.8	13.06	2.4	13.07	11.36	1.6	11.07	5.7	1.9	5.68	0.84	1.40	0.55
Na2O	3.31	2.2	3.03	1.78	0.6	1.7	2.17	4.2	1.97	1.7	3.9	1.73	3.26	4.8	3.06	3.8	0.5	3.86	0	BDL	0.02
K2O	0.18	3.4	0.17	0	141.4	NR	0.09	60	0.02	0.01	24.9	0.03	0.39	1.3	0.36	0.76	5.4	0.78	0	112.60	0
P2O3	0.17	41.5	0.16	0.06	141.4	0.08	0.05	111.3	0.07	0.02	173.2	0.05	0.15	49.4	0.16	0.17	15.7	0.16	0	89.60	NR

Trace element (ppm):
Cr	255.6	6.7	233.1	205.7	1.9	191.5	431.3	27.2	343.7	395.1	2.9	377.1	282.6	4.6	236.6	6.9	3.5	7.3	2978.4	5.70	2904.2
Ni	125	1.7	101.8	110.8	13.4	80.8	135.3	14.9	109.5	210.4	5.3	163.9	115.4	15.8	104.5	0	BDL	1.8	2779.9	1.30	2405.5
V	329.3	12.7	300.3	327.9	3.2	NR	290.9	3.7	NR	303.8	4.2	309	253.5	15.8	NR	121.8	7.6	105.1	33.4	5.90	28.4
Sc	40.1	16.5	30.7	40.7	4.5	43.9	44.2	4	NR	39	8.4	43.4	32.6	13.7	NR	32.5	16.7	28.4	13.3	2.70	6.9
Ba	10.7	85.2	NR	7.5	71.3	NR	6.2	63.7	NR	7.9	98.3	6.9	42.4	4.1	57.2	309.6	5.7	307.2	13.4	30.80	16.6
Sr	143.9	1.6	131.4	57.1	1.7	46.9	78.9	5.1	62.8	112.7	0.7	106.6	208.3	4.9	196.2	254	0.7	266.2	16	1.30	NR
Y	35.9	2	42.5	26.8	4.4	29.9	25.8	1.4	28.1	16.2	3.4	15.8	26.9	6.6	26.6	28.3	9.8	30.6	4.5	18.00	NR
Zr	123.3	4.5	133.4	48.4	8.9	48.9	48.6	12.4	48.3	22.3	11.7	15.3	102.2	5.1	100.6	85.9	4.6	88.4	14.7	28.10	6.2
Nb	6.6	6	NR	0	BDL	NR	0.1	222.3	1.5	0	BDL	0.6	1.7	9.1	4.9	0	BDL	1.7	0	BDL	1.2