JSON structure for names consistent with the SKOS-XL extension

mineral_names.json

{
    "@context": {
      "literalForm": "http://www.w3.org/2008/05/skos-xl#literalForm",
      "prefLabel": "http://www.w3.org/2008/05/skos-xl#prefLabel",
      "altLabel": "http://www.w3.org/2008/05/skos-xl#altLabel",
      "identifier": "@id",
      "language": "http://purl.org/dc/elements/1.1/language",
      "source": "http://purl.org/dc/elements/1.1/source",
      "nameType": "http://rs.tdwg.org/min/terms/nameType"
    },
    "@graph": [
        {
        "identifier": "http://mineral/123",
        "prefLabel": 
            {
                "literalForm":  "Quartz",
                "identifier": "https://mindat.org/api/v1/resource?guid=4ca61d6f-75f8-4208-8fb2-3b0eecbcd8f0",
                "language": "en",
                "source": "Nickel-Strunz 10th edition",
                "nameType": "classification"
            },
        "altLabel": [
                {
                    "literalForm":  "Smoky Quartz",
                    "identifier": "https://mindat.org/api/v1/resource?guid=5cc8f406-3000-4ee4-a224-26d8758a843a",
                    "language": "en",
                    "source": "MinDat",
                    "nameType": "variety"
                },
                {
                    "literalForm":  "Quartzy stuff",
                    "identifier": "https://mindat.org/api/v1/resource?guid=12345678-3000-4ee4-a224-26d8758a843a",
                    "language": "en",
                    "source": "MinDat",
                    "nameType": "historical name"
                }
            ]
        }
    ]
}