"chiastolite slate" meaning in English

{
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    {
      "form": "chiastolite slates",
      "tags": [
        "plural"
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      "expansion": "chiastolite slate (plural chiastolite slates)",
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  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "A rock formed by contact metamorphism of carbonaceous shale, characterized by prominent cleavage or schistosity and the presence of conspicuous chiastolite crystals in a fine-grained groundmass."
      ],
      "id": "en-chiastolite_slate-en-noun-A~Z2BnAI",
      "links": [
        [
          "mineralogy",
          "mineralogy"
        ],
        [
          "metamorphism",
          "metamorphism"
        ],
        [
          "carbonaceous",
          "carbonaceous"
        ],
        [
          "shale",
          "shale"
        ],
        [
          "cleavage",
          "cleavage"
        ],
        [
          "schistosity",
          "schistosity"
        ],
        [
          "chiastolite",
          "chiastolite"
        ],
        [
          "crystal",
          "crystal"
        ],
        [
          "groundmass",
          "groundmass"
        ]
      ],
      "raw_glosses": [
        "(mineralogy) A rock formed by contact metamorphism of carbonaceous shale, characterized by prominent cleavage or schistosity and the presence of conspicuous chiastolite crystals in a fine-grained groundmass."
      ],
      "topics": [
        "chemistry",
        "geography",
        "geology",
        "mineralogy",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "chiastolite slate"
}

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        "en:Minerals",
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      "glosses": [
        "A rock formed by contact metamorphism of carbonaceous shale, characterized by prominent cleavage or schistosity and the presence of conspicuous chiastolite crystals in a fine-grained groundmass."
      ],
      "links": [
        [
          "mineralogy",
          "mineralogy"
        ],
        [
          "metamorphism",
          "metamorphism"
        ],
        [
          "carbonaceous",
          "carbonaceous"
        ],
        [
          "shale",
          "shale"
        ],
        [
          "cleavage",
          "cleavage"
        ],
        [
          "schistosity",
          "schistosity"
        ],
        [
          "chiastolite",
          "chiastolite"
        ],
        [
          "crystal",
          "crystal"
        ],
        [
          "groundmass",
          "groundmass"
        ]
      ],
      "raw_glosses": [
        "(mineralogy) A rock formed by contact metamorphism of carbonaceous shale, characterized by prominent cleavage or schistosity and the presence of conspicuous chiastolite crystals in a fine-grained groundmass."
      ],
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        "chemistry",
        "geography",
        "geology",
        "mineralogy",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "chiastolite slate"
}