Thermal history of nakhlites: A comparison between MIL 03346 and its terrestrial analogue Theo's flow

This result appears inconsistent with the shallow depth of origin (∼<2 m) assumed for MIL 03346, further supporting the discrepancy between MIL 03346 textural and petrologic evidence of fast cooling and the abovementioned Tc results obtained for augite. Therefore, a tentative scenario is that, soon after eruption and initial quench and while still at relatively high-T (∼600 °C), MIL 03346 was blanketed with subsequent lava flows that slowed down the cooling rate and allowed the augite Fe2+-Mg exchange reaction to proceed.