Table 1.

¹⁸²Hf–¹⁸²W systematics of mineral fractions and bulk Mg and Cr isotope compositions of the STP-1 FUN CAI

Sample	27Al/24Mg	μ25Mg	μ26Mg*	μ53Cr	μ54Cr	180Hf/183W	μ182W (6/3)	μ184W (6/3)	μ182W (6/4)	μ183W (6/4)
Bulk	3.18 ± 0.06	9,331 ± 20	−303 ± 10	260 ± 9	−3,579 ± 15
Melilite						1.978 ± 0.119	−18 ± 27	−28 ± 15	69 ± 22	41 ± 23
Anorthite						2.675 ± 0.161	35 ± 27	−27 ± 16	115 ± 35	43 ± 24
Diopside						14.22 ± 0.85	622 ± 52	−31 ± 24	676 ± 58	46 ± 37

Isotope ratios expressed in the μ-notation, which reflect 10⁶ (ppm) deviations from the terrestrial reference standard. Uncertainties represent the external reproducibility or internal precision, whichever is larger. Mg and Cr isotope data were acquired following techniques outlined in Bizzarro et al. (33) and Trinquier et al. (34), respectively. (6/3), internally normalized to ¹⁸⁶W/¹⁸³W; (6/4), internally normalized to ¹⁸⁶W/¹⁸⁴W.