Table 4. Results of LA-ICP-MS analyses of saponite vein from Sample 168-1026B-4R-1, 7-11 cm (Piece 2).

Table 4. Results of LA-ICP-MS analyses of saponite vein from Sample 168-1026B-4R-1, 7-11 cm (Piece 2).

	Co	Ni	Cu	Zn	Rb	Sr	La	Ce	²⁰⁶Pb	²⁰⁸Pb	U
Ablation 1	28	1551	55	668	5	121	BDL	BDL	285	221	BDL
Ablation 2	21	1478	264	521	BDL	118	BDL	13	BDL	BDL	BDL
Ablation 3	49	2596	331	1381	21	303	BDL	64	135	184	BDL
Ablation 4	55	1930	154	646	17	284	BDL	BDL	145	108	BDL
Ablation 5	72	1646	98	553	BDL	93	BDL	BDL	BDL	BDL	BDL
Ablation 6	35	2079	92	669	21	155	BDL	BDL	248	120	BDL
SDL (ppm)	2	28	7	90	2	3	8	5	18	11	6
MDL (ppm)	4	88	16	105	2	48	16	13	13	8	8
RSD (element/Mg)rm (%)	48	34	30	46	58	30	54	32	21	77	63

Notes: All values are in ppm. BDL = below detection limit. SDL = statistical detection limit in ppm for each element determined from counting statistics on the SRM-611 glass standard, which contains about 500 ppm of each element. The SDL is three times the concentration equivalent of the square root of background counts. MDL = minimum detection limit in ppm determined using the equation in Jenner et al. (1993), which takes into account the counting statistics on both standard and specimen. RSD = relative standard deviation of repeat determinations of blank-corrected element counts divided by blank-corrected magnesium counts, expressed as percentage. This value gives a qualitative idea of the errors associated with each analysis.