{"id":40189,"date":"2026-02-21T13:51:21","date_gmt":"2026-02-21T12:51:21","guid":{"rendered":"https:\/\/karmaka.de\/?p=40189"},"modified":"2026-02-21T13:51:22","modified_gmt":"2026-02-21T12:51:22","slug":"data-driven-classification-of-ordinary-chondrites-and-asteroidal-metal-potential-evaluation-2","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=40189","title":{"rendered":"Data-driven classification of ordinary chondrites and asteroidal metal potential evaluation<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Tian-Yu Liu, Si-Jia Wei, Ke-Li Shi, Tian-Qi Qiu, Jun-Zhe Teng &amp; Zheng-Jie Qiu<\/p>\n\n\n\n<p>Scientific Reports, Volume 16, Article number: 5826, Published: 20 January 2026<\/p>\n\n\n\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41598-026-35624-0\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.nature.com\/articles\/s41598-026-35624-0.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Ordinary chondrites (OCs) comprise\u2009~\u200987% of meteorites and are key to decoding early Solar System processes, yet H\u2013L\u2013LL classification is often ambiguous, especially between L and LL. We compile\u2009~\u20091100 published bulk analyses and train Support Vector Machine (SVM) and Random Forest (RF) classifiers on 13 geochemical features (including Si-normalized ratios and trace elements). Both models achieve an overall accuracy of 0.90, with precision of 0.96\u20130.97 (H), 0.86\u20130.89 (L), and 0.71\u20130.80 (LL), outperforming traditional single-proxy discrimination. Feature importance is dominated by Fe\/Si and Ni\/Si, consistent with metal\u2013silicate fractionation trends. Principal component analysis (PCA) shows strong covariance among Fe\u2013Ni\u2013Co and inverse correlations with Si\u2013Mg\u2013Ca, separating metal-rich H from silicate-rich L\u2013LL. To link taxonomy with resource assessment, we propose a Metal Potential Index (MPI) based on (Fe\/Si\u2009+\u2009Ni\/Si\u2009+\u2009Co\/Si) after max-normalization; group means decrease from H (1.23) to L (0.87) to LL (0.75). Complementary statistical tests indicate that Fe\u2013Ni (with Co admixtures) show limited dependence on petrographic type within each chemical group, supporting a near-uniform distribution of FeNi (Co) grains at the parent-body scale. Together, ML, PCA, and MPI provide a reproducible, data-driven framework for OC classification and for ranking asteroidal metal potential, identifying H-type parent bodies as the highest-priority metal targets.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tian-Yu Liu, Si-Jia Wei, Ke-Li Shi, Tian-Qi Qiu, Jun-Zhe Teng &amp; Zheng-Jie Qiu Scientific Reports, Volume 16, Article number: 5826, Published: 20 January 2026 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;Ordinary chondrites (OCs) comprise\u2009~\u200987% of meteorites&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[77,59,7],"tags":[1854,1841,2932,2416,1807],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/40189"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=40189"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/40189\/revisions"}],"predecessor-version":[{"id":40190,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/40189\/revisions\/40190"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=40189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=40189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=40189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}