Shaunna Morrison is an amazing scientist who has made groundbreaking contributions among her 4-score publications. She has garnered an exceptional international reputation, both in conducting unprecedented studies on Mars and in applying data-driven discovery to rocks and minerals on Earth and other worlds. Morrison’s earliest breakthroughs relate to studies of Mars mineralogy. A key member of the CheMin team (the X-ray diffractometer on Curiosity), she realized that Mars’s minerals could serve as internal X-ray standards and developed algorithms that increased the precision and accuracy of CheMin data by an order of magnitude better than flight specifications. In 2017 Morrison began to focus on planetary informatics. Leading a team of collaborators in mineralogy and data science, her first informatics paper focused on applications of network analysis to mineral systems. Shaunna’s breakthrough was to realize that networks of mineral associations facilitate analysis and visualization of mineral systems in dynamic, interactive renderings—a fresh approach to a centuries-old science. She is also building mineral databases for planets, moons, and meteorites to compare their properties using network metrics—an approach that suggests that mineral distributions may be a biosignature. Morrison is helping to develop a new “evolutionary system” of mineralogy, which adds the dimension of time to mineral classification. Recently, Morrison has been pioneering applications “association analysis,” using machine learning methods to predict as yet undiscovered localities of minerals, as well as Mars analogue sites on Earth. Several predictions have been confirmed, pointing to a promising new approach to resource discovery and interpretation. These advances have not gone unnoticed. She is a Mineralogical Society of America Distinguished Lecturer and delivers dozens of seminars, public lectures, and keynote and plenary conference lectures annually. She is active in organizing data science workshops and conferences, and she and her education colleagues won a national 4-H Club competition to develop an outreach program on Mars exploration and mineralogy—an effort that is reaching tens of thousands of children. Among Morrison’s most impressive traits is her desire to reach across disciplinary boundaries, to seek out scientists with expertise different from her own. As a member of NASA’s Astrobiology Institute, she is integrating seemingly disparate fields of proteomics, microbial ecology, geochemistry, and mineralogy to deduce how environmental characteristics play key roles in microbial protein expression. Her ability to work with and inspire others will play a vital role in her growing influence and her rise to the highest levels of the scientific world.
—Robert M. Hazen, Earth and Planets Laboratory, Carnegie Institution, Washington, D.C.
Uranium (U) is an important global energy resource and a redox sensitive trace element that reflects changing environmental conditions and geochemi...