Introduction: Dark inclusions are irregular, cmsized clasts of fine grained material found within chondrites such as Allende. They can be classified into 4 groups (A, A/B, B, and C) based primarily on the presence of components such as small scale chondrules [e.g. 1-2]. Alteration is prevalent with many dark inclusions being composed entirely of secondary minerals [3] and often surrounded by a ...

Introduction: NWA 1068 is a 577g picritic shergottite found in the Moroccan Sahara in 2001[1]. The meteorite resembles several other picritic shergottites, e.g. EETA79001B, DaG476, SaU005 and Dho019, in major-element chemistry and mineralogy, but it differs significantly from these meteorites in REE distribution pattern. It has a slightly LREE-depleted pattern commonly shared by some olivine-fr...

The tensile strength of volcanic rocks is an important parameter for understanding and modelling a wide range processes, in the development strategies designed to optimise energy production geothermal reservoirs. However, despite near-ubiquity hydrothermal alteration at systems, values hydrothermally altered are sparse. Here, we present experimental study which measured variably rocks. these ro...

Introduction: In the Noachian, Mars’ crust was deeply affected by impact crater gardening [1], and subsequent hydrothermal alteration. While water was present in the Martian crust [2,3], frequent impacts [4,5] provided prominent heat sources that drove hydrothermal systems. Those systems were scattered randomly over the planet’s surface and variable in size, but generally spanned the diameter o...

The geochemical evolution of hydrothermal fractured rock systems occurs through a complex interplay of multi-phase fluid and heat flow, and chemical transport processes. On the basis of previous work we present simulations of reactive hydrothermal flow that include (1) detailed fracture-matrix interaction for fluid, heat and chemical constituents, (2) gas phase participation in multiphase fluid...