Table 4.

Siderophile element concentrations (μg/g) of lunar metal and troilite grains determined by laser ablation ICP-MS

Eelement	Cr	Fe (%)	Co	Ni (%)	Zn	Ga	Ge	Ru	Rh	Pd	Re	Os	Ir	Pt	Au
Metals
M1 rim	bdl	89.9	2769	9.85	bdl	0.34	0.16	3.59	0.60	3.44	0.07	0.56	0.61	1.75	0.79
M1 core	bdl	94.7	4046	4.92	0.19	0.71	0.31	2.73	0.55	2.35	0.20	1.84	1.88	4.66	1.84
M3	29	85.0	1694	14.9	0.42	2.47	0.32	4.71	0.57	5.52	0.06	0.55	0.60	1.45	0.44
M6 rim	24	86.4	1361	13.5	0.47	0.41	0.05	5.44	0.76	4.56	0.04	0.13	0.07	0.21	bdl
M6 core	bdl	95.4	3942	4.17	bdl	1.61	0.36	3.27	0.80	3.42	0.20	2.25	2.35	6.17	2.07
M9	bdl	96.8	4319	2.78	0.41	1.12	0.43	3.14	0.73	2.81	0.26	2.42	2.47	6.46	1.86
M10	11	86.9	1412	13.0	0.38	0.20	0.08	4.38	0.58	4.25	bdl	0.14	0.13	0.31	0.16
M11-1	11	96.5	2562	3.23	bdl	1.21	0.53	0.14	0.02	0.31	bdl	0.02	0.01	bdl	0.95
M11-2	bdl	96.6	2512	3.16	bdl	1.21	0.50	bdl	bdl	0.36	0.08	bdl	bdl	bdl	0.97
Troilites
M2	44	60	bdl	0.04	0.68	bdl	0.03	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl
M5	31	60	bdl	0.02	0.83	0.05	0.03	bdl	0.03	bdl	bdl	bdl	bdl	bdl	bdl
M7	29	60	bdl	0.01	0.78	0.66	0.04	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl
M8	48	60	bdl	0.02	0.75	1.15	0.03	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl
M12	40	60	bdl	0.01	0.68	bdl	0.04	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl
M13	52	60	bdl	0.02	0.70	bdl	0.04	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl
Dection limit	1	0.01	3	0.001	0.04	0.02	0.01	0.03	0.01	0.02	0.004	0.01	0.01	0.03	0.02

bdl: below detection limit; rim: the first ablation analysis; core: the second albation analysis on the same spot as the first ablation For troilites, an assumed Fe content of 60 % is set as the internal standard.