ToScA North America (6 – 8 June 2017, The University of Texas, Austin, TX) Program

ToScA North America will address key areas of science, including Multi-modal Imaging, Geosciences, Forensics, Increasing Contrast, Educational Outreach, Data, Materials Science and Medical and Biological Science.University of Texas High-Resolution X-ray CT Facility (UTCT); Jackson School of Geosciences, The University of Texas at Austin; Natural History Museum (London); Royal Microscopical Society (Oxford, UK)Geological Science

Digital Morphology

The Digital Morphology library is a dynamic archive of information on digital morphology and high-resolution X-ray computed tomography of biological specimens. Plants and animals, both recent and fossil, are included. Skulls and skeletons of vertebrates, exoskeletons of invertebrates and hard parts of plants are all represented. Browse through the site and see spectacular imagery, animations and details on the morphology of over 200 representatives of the Earth's biota. Educational levels: Graduate or professional, High school, Undergraduate lower division, Undergraduate upper division

Mineralogy and petrography of C asteroid regolith: The Sutter's Mill CM meteorite

International audienceBased upon our characterization of three separate stones by electron and X-raybeam analyses, computed X-ray microtomography, Raman microspectrometry, and visible-IR spectrometry, Sutter’s Mill is a unique regolith breccia consisting mainly of various CMlithologies. Most samples resemble existing available CM2 chondrites, consisting ofchondrules and calcium-aluminum-rich inclusion (CAI) set within phyllosilicate-dominatedmatrix (mainly serpentine), pyrrhotite, pentlandite, tochilinite, and variable amounts of Ca-Mg-Fe carbonates. Some lithologies have witnessed sufficient thermal metamorphism totransform phyllosilicates into fine-grained olivine, tochilinite into troilite, and destroycarbonates. One finely comminuted lithology contains xenolithic materials (enstatite, Fe-Crphosphides) suggesting impact of a reduced asteroid (E or M class) onto the main Sutter’sMill parent asteroid, which was probably a C class asteroid. One can use Sutter’s Mill tohelp predict what will be found on the surfaces of C class asteroids such as Ceres and thetarget asteroids of the OSIRIS-REx and Hayabusa 2 sample return missions (which willvisit predominantly primitive asteroids). C class asteroid regolith may well contain a mixtureof hydrated and thermally dehydrated indigenous materials as well as a significantadmixture of exogenous material would be essential to the successful interpretation ofmineralogical and bulk compositional data