{
  "id": "2108.08383",
  "version": "v1",
  "published": "2021-08-18T20:55:03.000Z",
  "updated": "2021-08-18T20:55:03.000Z",
  "title": "Compositional Diversity of Rocky Exoplanets",
  "authors": [
    "Keith Putirka",
    "Caroline Dorn",
    "Natalie Hinkel",
    "Cayman Unterborn"
  ],
  "comment": "To be published as article 2 in the \"Geoscience Beyond the Solar System\" issue of Elements magazine, v17 No4 1",
  "categories": [
    "astro-ph.EP",
    "astro-ph.SR",
    "physics.geo-ph"
  ],
  "abstract": "Star compositions are essential for examining densities and compositional ranges of rocky exoplanets, testing their similarity to Earth. Stellar elemental abundances and planetary orbital data show that of the ~5000 known minerals, exoplanetary silicate mantles will contain mostly olivine, orthopyroxene, and clinopyroxene, $\\pm$ quartz, and magnesiuwustite at the extremes; wholly exotic mineralogies are likely absent. Understanding these exotic geological systems requires a better marriage of geological insights to astronomical data. The study of exoplanets is like a mirror, reflecting our incomplete understanding of Earth and neighboring planets; new geological/planetary experiments, informed by exoplanet studies, are needed for effectual progress.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-08-18T20:55:03.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "rocky exoplanets",
      "compositional diversity",
      "stellar elemental abundances",
      "planetary orbital data",
      "exoplanetary silicate mantles"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}