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- Phase diagram and thermodynamic modeling studies suggest that these minerals formed at elevated temperatures (>150 °C) either along a normal geothermal gradient or as a result of impact- or volcanic-induced hydrothermal systems (McSween et al., 2015; Schwenzer & Kring, 2013; Semprich et al., 2019).
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How are hydrous minerals formed in Martian meteorites?
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Nov 20, 2020 · Some hydrous minerals present in martian meteorites, like amphibole and apatite, are primary minerals and formed from crystallization of magmas. However, most hydrous minerals in martian meteorites were formed through interaction with water occurring on the martian surface or subsurface.
Aug 1, 2023 · These minerals are mostly hydrous; they are formed by alteration of protoliths, such as basalts, and preserved only in certain physicochemical conditions (e.g., temperature, pH, Eh, pressure, water activity, etc.) (e.g., Downs and Team, 2015 ).
Mar 30, 2020 · From mixing calculations, we find that a subset of depleted Martian basalts are consistent with isotopically light hydrogen (low D/H) in their mantle source, whereas enriched shergottites...
- Jessica J. Barnes, Francis M. McCubbin, Alison R. Santos, James M. D. Day, Jeremy W. Boyce, Susanne ...
- 2020
May 11, 2022 · In the martian meteorite Miller Range (MIL) 03346, a shock deformation–driven hydrothermal system is supported by the correlation between microstructures characteristic of shock events in augite and the occurrence of secondary minerals derived from fluid-rock reactions being found within the mesostasis, connecting the shock event to the aqueous ...
Alteration surface processes: Martian alteration, as evidenced by hydrous minerals, which are found in martian meteorites, can help us better understand the hydrological cycle on Mars. All martian meteorites show alteration minerals, with various abundances, including iddingsite, phyllosilicates, evaporites, pyrite, and carbonates.
3 days ago · Geological Insights From Martian Meteorites. The team analyzed the two keystone nakhlite and chassignite meteorite types. Nakhlites are basaltic, similar to lavas erupting in Iceland and Hawaii today, but are rich in a mineral called clinopyroxene. Chassignites are almost exclusively made of the mineral olivine.
Jul 1, 2003 · The nature of the hydrogen-containing material observed in the equatorial martian regolith is of particular importance to the question of whether hydrous minerals formed in the past on Mars and whether they can remain in a hydrated state on or near the martian surface under present-day conditions.
