Fig. 2

Distribution of radiogenic ²⁰⁶Pb between leaching steps in whole rock and mineral fractions of ungrouped achondrite Erg Chech 002 (data from batch A167 in Supplementary Data Table 1 of Krestianinov et al. (2023). WR1 and WR2—whole rock fractions, oPx—orthopyroxene, cPx—clinopyroxene, Pl—plagioclase. Leaching steps: W1—0.5 M HNO₃ at ambient temperature with ultrasonication, W2a—hot 7 M HNO₃, W2b—hot 6 M HCl, R—dissolution in hot concentrated HF + HNO₃