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Cross-SSERVI Mineral and Glass Samples for Integrated Science

Author: 
Melinda Dyar
Topic: 
Geochemistry/Petrology
Delivered As: 
Poster
Abstract Text: 

One of the many advantages of the virtual institute structure of the Solar System Research Exploration Virtual Institutes is the ability to share samples for various experimental projects. For this purpose, we have developed a well-characterized suite of six mineral samples and several different silicate glasses designed for cross-instrument studies to pursue different types of scientific questions relating to airless bodies. The mineral samples include two feldspars (bytownite and labradorite), two pyroxenes (diopside and augite), and two forsteritic olivines; these are available for research projects as large (>2 cm diameter) single crystals, and as crushed and sieved powders with grain sizes ranging from >1000 m to

Several research projects have been undertaken using samples from these suites, particularly by members of the RIS4E, VORTICES, and SEEED teams. They include:
• Single crystal mid-IR optical constants of labradorite (Rucks, Glotch, RIS4E)
• Pressed-pellet mid-IR and VNIR-Mid_IR bidirectional spectra of varying grain sizes of bytownite and labradorite for Hapke modeling (Sklute, RIS4E, Hiroi, Pieters, SEEED)
• Temperature-programmed desorption experiments on labradorite (Hibbitts, Orlando, VORTICES)
• Spectral modeling of lunar-like glasses (Cannon, Mustard, SEEED)
• Characterization of the structure of the 3 m band in silicate glasses (Dyar, Hibbitts, VORTICES)
• Calibration of iron redox state in silicates glasses by Mössbauer, x-ray absorption, and nano-TEM (Dyar, McCanta, Lanzirotti, Sutton, Burgess, Stroud, DeGregorio, RIS4E)
• Olivine oxidation experiments (Izenberg, Hibbitts, VORTICES)
• Mineral un-mixing experiments for Raman and reflectance spectroscopy (Dyar, Glotch, Sklute, Carey, RIS4E, Hiroi, Pieters, SEEED)

Cross-disciplinary and cross-science questions addressed using the exact same sample provide consistency across projects. Samples of the six minerals and of some of the glasses remain and are available to interested users, who should contact the first author for additional information.

Co-Authors: 
Lionel Wilson, Lancaster University"...
SSERVI Identifier: 
NESF2016-043

About SSERVI
Recognizing that science and human exploration are mutually enabling, NASA created the Solar System Exploration Research Virtual Institute (SSERVI) to address basic and applied scientific questions fundamental to understanding the Moon, Near Earth Asteroids, the Martian moons Phobos and Deimos, and the near space environments of these target bodies. As a virtual institute, SSERVI funds investigators at a broad range of domestic institutions, bringing them together along with international partners via virtual technology to enable new scientific efforts."