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The distribution of minerals on Earth, Mars, and other worlds mimics social networks, as commonly applied to such varied topics as Facebook interactions, the spread of disease, and terrorism networks. Applying social network analysis (SNA) to common rocks, such as granite and basalt, reveals patterns of cohesion, segregation, density, and cliques that are similar to those of human social networks. These patterns provide new insights into the way planets evolve, especially the co-evolving geosphere and biosphere. SNA also offers promising new pedagogical approaches to teaching mineralogy and petrology.
Dr. Robert Hazen, Geophysical Laboratory, Carnegie Institution for Science
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