{
  "$schema": "https://themachinepress.com/schemas/story-v1.schema.json",
  "schema_version": "1.0.0",
  "document_type": "machine_press_story",
  "story": {
    "story_id": "mp-2026-08-02-015",
    "source_story_id": "tmp-sidebar-goethite-deep-mantle-diamond",
    "edition_id": "mp-2026-08-02-morning-0024",
    "edition_url": "https://themachinepress.com/edition/2026-08-02",
    "position": 17,
    "story_type": "ticker",
    "section": "research",
    "editorial_classification": "editorial",
    "headline": "A Diamond Carried Hydrated Iron From the Deep",
    "slug": "a-diamond-carried-hydrated-iron-from-the-deep",
    "dek": "A sealed inclusion contained goethite, hematite and magnetite, supporting a route for water into the lower mantle.",
    "summary": "A sealed inclusion contained goethite, hematite and magnetite, supporting a route for water into the lower mantle.",
    "body_text": "Brazilian synchrotron measurements mapped a sealed inclusion in a super-deep diamond and identified goethite alongside iron oxides. The assemblage supports models in which protected goethite carries water hundreds of kilometers down before transforming; one diamond cannot determine the global water flux.",
    "why_it_matters": "A sealed inclusion contained goethite, hematite and magnetite, supporting a route for water into the lower mantle.",
    "limitations": [
      "The assemblage supports models in which protected goethite carries water hundreds of kilometers down before transforming; one diamond cannot determine the global water flux."
    ],
    "importance": 6,
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-02-015/a-diamond-carried-hydrated-iron-from-the-deep",
    "json_url": "https://themachinepress.com/story/mp-2026-08-02-015.json",
    "first_published_at": "2026-08-02T09:00:00.000-04:00",
    "modified_at": "2026-08-02T09:00:00.000-04:00",
    "content_status": "new",
    "is_carryover": false,
    "carryover_reason": null,
    "key_claims": [
      {
        "claim_id": "claim-mp-2026-08-02-015-001",
        "text": "A sealed inclusion contained goethite, hematite and magnetite, supporting a route for water into the lower mantle.",
        "source_ids": [
          "source-2026-08-02-017"
        ],
        "qualification": "The assemblage supports models in which protected goethite carries water hundreds of kilometers down before transforming; one diamond cannot determine the global water flux."
      }
    ],
    "source_ids": [
      "source-2026-08-02-017"
    ],
    "tags": [
      "Earth mantle",
      "diamonds",
      "water cycle",
      "goethite"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-08-02-017",
      "title": "Scientific Reports: iron oxyhydroxide as a mantle water carrier",
      "publisher": "Scientific Reports",
      "url": "https://doi.org/10.1038/s41598-026-46683-8",
      "canonical_url": "https://doi.org/10.1038/s41598-026-46683-8",
      "source_type": "secondary_reporting",
      "is_primary_source": false,
      "published_at": null,
      "accessed_at": "2026-08-02T08:28:19.398-04:00",
      "supports_claim_ids": [
        "claim-mp-2026-08-02-015-001"
      ]
    }
  ],
  "corrections": [],
  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
  },
  "cite_this_report": {
    "title": "A Diamond Carried Hydrated Iron From the Deep",
    "publisher": "The Machine Press",
    "published_at": "2026-08-02T09:00:00.000-04:00",
    "canonical_url": "https://themachinepress.com/story/mp-2026-08-02-015/a-diamond-carried-hydrated-iron-from-the-deep"
  }
}