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Early solar system processes recorded in the matrices of two highly pristine CR3 carbonaceous chondrites, MET 00426 and QUE 99177
The mineralogy and bulk compositions of the matrices of the CR chondrites MET 00426 and QUE 99177 have been studied using a combination of SEM, EPMA, and TEM techniques. The matrices of these twoExpand
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Pressure–temperature evolution of primordial solar system solids during impact-induced compaction
Prior to becoming chondritic meteorites, primordial solids were a poorly consolidated mix of mm-scale igneous inclusions (chondrules) and high-porosity sub-μm dust (matrix). We used high-resolutionExpand
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Deciphering the nebular and asteroidal record of silicates and organic material in the matrix of the reduced CV3 chondrite Vigarano
– We have conducted scanning electron microscope (SEM) and transmission electron microscope (TEM) studies of a variety of occurrences of matrix in the reduced CV3 chondrite breccia Vigarano.Expand
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Asteroid Redirect Mission (ARM) Formulation Assessment and Support Team (FAST) Final Report
The Asteroid Redirect Mission (ARM) Formulation Assessment and Support Team (FAST) was a two-month effort, chartered by NASA, to provide timely inputs for mission requirement formulation in supportExpand
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Why is it so difficult to classify Renazzo-type (CR) carbonaceous chondrites? – Implications from TEM observations of matrices for the sequences of aqueous alteration
Abstract A number of different classifications have been proposed for the CR chondrites; this study aims at reconciling these different schemes. Mineralogy-based classification has provedExpand
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Carbonates in Vigarano: Terrestrial, preterrestrial, or both?
Studies of two separate stones of the CV3 chondrite Vigarano have revealed the presence of previously unreported occurrences of calcite. In the first stone, calcite occurs as thin veins in a type BExpand
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Understanding the mechanisms of formation of nanophase compounds from Stardust: Combined experimental and observational approach
Abstract– We have experimentally produced nanophase sulfide compounds and magnetite embedded in Si-rich amorphous materials by flash-cooling of a gas stream. Similar assemblages are ubiquitous, andExpand
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Chemical Consequences of the Formation of Opaque Assemblages on the Matrix of CR2 GRA 06100
Introduction: Several studies have contributed to our understanding of the record of alteration of CR chondrites [e.g., 1-5]. However, recent observations of CR2 GRA 06100 suggest that hydration ofExpand
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