{
    "system": "GoGuides Verified Text",
    "api_version": "verified-text-v1",
    "status": "ok",
    "response_type": "verified_text_record",
    "source_key": "britannica_1911",
    "source_title": "Encyclopaedia Britannica (1911)",
    "license_code": "public_domain",
    "attribution": null,
    "license_url": null,
    "chunk_id": "1911:benitoite:5c8d200a3fa7",
    "title": "BENITOITE",
    "section": null,
    "hash_alg": "sha256",
    "hash_sha256": "ca8dad19414816b9bbbf6a02a7bb7342ab6bb3191e4703265185f035cc26450e",
    "normalizer": {
        "name": "ggnorm",
        "version": "1.0"
    },
    "verified_text": "benitoite, a mineral discovered in 1907 near the headwaters of the san benito river, san benito co., california, and described by prof. g.d. louderback. it is a titano-silicate of barium (batisi3o9), crystallizing in the hexagonal system, with a hardness of 6.5, and specific gravity 3.65. it may be colourless or blue, the colour varying sometimes in different parts, and passing to a deep sapphire blue. the blue variety is cut as a gem stone, and often resembles blue spinel, though its softness distinguishes it from spinel and sapphire. it is a brilliant stone, with high refractive index, and is strongly dichroic, being pale when viewed parallel to the principal axis and dark when viewed transversely.",
    "source_url": "https://archive.org/details/EB1911WMF",
    "observed_at": "2026-02-08 18:42:44",
    "integrity": {
        "hash_check": "match",
        "hash_scope": "full_normalized_text",
        "computed_sha256": "ca8dad19414816b9bbbf6a02a7bb7342ab6bb3191e4703265185f035cc26450e"
    },
    "machine_use": {
        "read": true,
        "cite": true,
        "decision": "verified_public_domain_text"
    },
    "goguides_data_license": "https://www.goguides.com/data-license",
    "goguides_data_license_version": "2.0",
    "documentation": {
        "white_paper_url": "https://www.goguides.com/white-paper.php",
        "pdf_url": "https://www.goguides.com/whitepapers/goguides-ai-source-clearance-white-paper.pdf"
    }
}