Now showing items 1-7 of 7

    • Cluster Analysis and Classification of Presolar Silicon Carbide Grains 

      Boujibar, A.; Zhang, S.; Howell, S.; Prabhu, Anirudh; Narkar, Shweta; Eleish, Ahmed; Morrison, S.M.; Hystad, G.; Alexander, C. M. (Astrophysical Journal Letters, 2021-01-29)
      Cluster analysis of presolar silicon carbide grains based on literature data for 12C/13C, 14N/15N, δ30Si/28Si, and δ29Si/28Si including or not inferred initial 26Al/27Al data, reveals nine clusters agreeing with previously ...
    • Cluster Analysis of Presolar Silicon Carbide Grains: Evaluation of Their Classification and Astrophysical Implications 

      Boujibar, A.; Howell, S.; Zhang, S.; Hystad, G.; Prabhu, Anirudh; Liu, N.; Stephan, T.; Narkar, S.; Eleish, Ahmed; Morrison, S.M.; Hazen, Robert (IOP Publishing, 2021-01)
      Cluster analysis of presolar silicon carbide grains based on literature data for 12C/13C, 14N/15N, δ30Si/28Si, and δ29Si/28Si including or not inferred initial 26Al/27Al data, reveals nine clusters agreeing with previously ...
    • Data-driven discovery in mineralogy: Insights from natural kind clustering 

      Hazen, Robert; Morrison, S.M.; Zhang, S.; Boujibar, A.; Prabhu, Anirudh; Fox, Peter; Eleish, Ahmed; Huang, F.; Liu, C.; Ma, C.; Ma, Xiaogang (AGU, 2019-12)
      Mineralogists have long asked how many different kinds of minerals occur on Earth, if that number has changed through time, and how Earth's mineral diversity compares to that of other planets and moons. Those questions ...
    • Exploring carbon mineralogy and mineral evolution through deep time with advanced analytics and visualization 

      Morrison, SM; Eleish, Ahmed; Prabhu, Anirudh; Narkar, Shweta; Pan, Feifei; Huang, Fang; Fox, Peter; Hystad, G.; Liu, C.; Buongiorno, J.; Zhang, S. (AGU, 2019-12-12)
      Recent years have seen a dramatic increase in the volume of mineralogical data available for study, including that of carbon. These large and expanding data resources have created an opportunity to characterize changes in ...
    • Natural clustering of pyrite with implications for its formational environment 

      Zhang, S.; Morrison, S.M.; Prabhu, Anirudh; Ma, C.; Huang, F.; Gregory, D.; Large, L. L.; Hazen, Robert (AGU, 2019-12)
      The modern mineral classification system is largely based on unique combinations of idealized major element composition and crystal structure, and therefore emphasis on the diverse modes of origin for each mineral is ...
    • Natural clustering of pyrite with implications for its formational environment 

      Zhang, S.; Morrison, S.M.; Prabhu, Anirudh; MA, C.; Huang, F.; gregory, D.; Large, R. R.; Hazen, Robert (AGU, 2019)
      The modern mineral classification system is largely based on unique combinations of idealized major element composition and crystal structure, and therefore emphasis on the diverse modes of origin for each mineral is ...
    • Natural kind clustering of presolar silicon carbides and its astrophysical implications 

      Boujibar, A.; Zhang, S.; Howell, S.; Prabhu, Anirudh; Narkar, S.; Hystad, G.; Eleish, Ahmed; Morrison, S.M.; Hazen, Robert; Nittler, L. R. (AGU, 2019-12)
      Cluster analysis of presolar silicon carbide grains based on literature data for 12C/13C, 14N/15N, δ30Si/28Si, and δ29Si/28Si including or not inferred initial 26Al/27Al data, reveals nine clusters agreeing with previously ...