. Author manuscript; available in PMC: 2021 Sep 15.

Published in final edited form as: Geochim Cosmochim Acta. 2015 Feb 14;155:122–153. doi: 10.1016/j.gca.2015.02.004

Table 3.

Slopes and intercepts of Ir versus HSE trends, as well as simple ratio averages, for the lunar melt rocks

Samples	15445	15455	60016,286b		60016,290b			60235
Intercepts	silicate	silicate	silicate	silicate	silicate	silicate+metal	silicate+metal	silicate	silicate
ng/g	regression	regression	regression	average	regression	regression	average	regression	average
Re	−0.02±0.11	0.005±0.072	0.23±0.25		0.46±0.59	0.08±0.19		0.15±0.16
Re*	0.17±0.69	−0.015±0.035	0.12±0.12		0±0.6	0.11±0.09		0.006±0.081
Os	−0.25±0.79	−0.01±0.18	1.9±1.6		−1.2±3.1	0.7±3.3		0.17±0.69
Ru	−0.01±0.78	0.01±0.84	6.6±3.2		3±20	3.1±4.5		1.0±1.3
Pt	0±1.8	0.3±1.0	6±21		−21±39	1±72		3.9±2.1
Pd	1.1±2.0	1.5±1.5	13.6±6.4		3±38	8±68		3.0±2.4
Slopes/Average Ratios
Re/Ir	0.106±0.019	0.104±0.014	0.093±0.020	0.111±0.004	0.092±0.026	0.109±0.008	0.113±0.004	0.094±0.022	0.118±0.031
Re*/Ir	0.108±0.017	0.106±0.007	0.099±0.010	0.108±0.002	0.110±0.027	0.105±0.0002	0.109±0.003	0.104±0.011	0.104±0.013
Os/Ir	1.00±0.14	0.922±0.031	0.79±0.11	0.946±0.031	0.99±0.13	0.905±0.008	0.932±0.014	0.926±0.095	0.942±0.114
Ru/Ir	2.17±0.14	2.31±0.15	1.85±0.22	2.40±0.08	2.28±0.84	2.27±0.01	2.38±0.08	1.92±0.18	2.04±0.20
Pt/Ir	2.55±0.31	2.59±0.18	2.5±1.6	3.04±0.14	3.9±1.6	2.98±0.17	3.02±0.15	2.14±0.28	2.67±0.29
Pd/Ir	2.06±0.35	2.26±0.27	1.92±0.45	3.04±0.17	3.1±1.6	2.84±0.16	3.15±0.17	2.00±0.33	2.43±0.49

¹⁸⁷Os/¹⁸⁸Os	0.1348±7	0.1372±4	0.1383±10			0.1390±8			0.1362±7

Samples	60635	62295	63549	65095			67095		68416
Intercepts	silicate	silicate	silicate	silicate	silicate	silicate	silicate+metal	metal	silicate
ng/g	regression	regression	regression	regression	average	regression	regression	regression	regression
Re	0.04±0.11	−0.029±0.029	0.002±0.23	0.15±0.07		−0.002±0.014	−0.012±0.009	−2.1±4.1	−0.004±0.032
Re*	0.10±0.19	−0.005±0.096	0.02±0.28	0.01±0.07		−0.008±0.007	−0.3±3.0	−4±34	−0.011±0.016
Os	0.1±1.2	−0.11±0.05	0.8±1.3	−0.4±1.2		−0.047±0.028	−7±39	−94±430	0.07±0.17
Ru	0.7±2.7	0.35±0.30	0±3.7	9.4±5.8		0.18±0.39	1±34	17±400	0±0.4
Pt	−0.2±5.9	1.14±0.43	−3±12	17±15		0.32±0.39	18±73	278±680	0±2.9
Pd	−3.8±5.2	1.5±1.1	−10±21	19±11		0.69±0.94	6±100	105±1100	−1.5±1.2
Slopes/Average Ratios
Re/Ir	0.084±0.009	0.112±0.003	0.089±0.025	0.103±0.006	0.115±0.007	0.101±0.008	0.107±0.004	0.112±0.007	0.091±0.007
Re*/Ir	0.085±0.014	0.110±0.009	0.092±0.031	0.109±0.006	0.110±0.003	0.105±0.004	0.112±0.004	0.115±0.02	0.092±0.004
Os/Ir	0.975±0.090	0.973±0.005	0.92±0.14	0.975±0.041	0.937±0.043	0.974±0.009	1.019±0.050	1.08±0.32	0.963±0.020
Ru/Ir	1.67±0.20	2.02±0.03	1.66±0.41	1.72±0.20	2.40±0.37	1.90±0.13	1.98±0.04	1.97±0.30	1.71±0.05
Pt/Ir	2.04±0.44	2.70±0.04	2.6±1.3	2.43±0.53	3.44±0.75	2.41±0.13	2.77±0.09	2.59±0.50	2.41±0.35
Pd/Ir	1.51±0.38	2.27±0.10	3.0±2.3	1.51±0.36	2.91±0.74	1.85±0.31	2.22±0.13	2.15±0.85	1.51±0.14

¹⁸⁷Os/¹⁸⁸Os	0.1297±10	0.1343±10	0.1300±9	0.1392±20		0.1349±8	0.1356±10	0.1369±21	0.1297±6

Note: “silicate” represents bulk silicate subsamples, “metal” represents individual metals, “regression” means values from the trends of lr versus HSE, and “average” means simple average ratios of the subsamples of each rock. All errors are given in 2σ.