{"id":"S90002223","label":"Hydrothermal alteration","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh90002223","normalized_label":"hydrothermal alteration","broader":["http://id.loc.gov/authorities/subjects/sh85084295"],"aliases":["Alteration, Hydrothermal"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh90002223","provider":"lcsh","revision":"c7e1f17e80dca1d2","taxonomy_revision":"f050b5d4780b1289","title":"Hydrothermal alteration","url":"/topics/S90002223","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"9569177257130477058","address_version":"morton4x16-v1","coordinates":[0,21,30028,48128],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}