{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.marble","code":"thing-q40861","url":"https://ver.cy/models/thing/q40861/","name":"marble","alternateNames":["fine-grain marble","coarse-grain marble","medium-grain marble","Castione marble","Berschis marble","Perlato Giallo","Collonges Rouge","Rosso Levanto","Auerbach marble","Macael marble","Lasa marble","Carrara marble"],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A metamorphic rock formed by recrystallisation of limestone or dolomite under heat and pressure, composed mainly of calcite or dolomite crystals, in white and many veined colours; prized since antiquity for sculpture and building, quarried at Carrara and many other places, and in the stone trade the name is also applied to polishable limestones and other rocks that are not true marble.","purpose":"Let an agent identify marble and its varieties, explain its formation and properties, relay stone standards, quarrying and conservation information, and separate geological marble from trade marble and from other polished stones.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Metamorphosed carbonate rock","Crystalline texture and polish","Soft and acid-sensitive","Trade name used loosely"],"structure":{"bundles":[{"id":"identify","name":"Identify","description":"What marble this is.","layers":[{"id":"rock","name":"Rock","description":"Geological identification.","findings":[{"id":"rock-finding","name":"Rock","description":"Rock.","questions":[{"text":"What defines marble geologically, and how is it distinguished from limestone and other stones?","kind":"definition"},{"text":"Is the stone a true marble or a trade marble?","kind":"boundary"}]}]},{"id":"variety","name":"Variety","description":"Varieties and quarries.","findings":[{"id":"variety-finding","name":"Variety","description":"Variety.","questions":[{"text":"Which variety or quarry name applies, and what are its characteristics?","kind":"provenance"},{"text":"Which entry fits the specific stone?","kind":"action"}]}]}]},{"id":"geology","name":"Geology","description":"Formation and properties.","layers":[{"id":"formation","name":"Formation","description":"Formation.","findings":[{"id":"formation-finding","name":"Formation","description":"Formation.","questions":[{"text":"How does marble form from limestone, and what controls colour and veining?","kind":"definition"},{"text":"Which entry fits metamorphism?","kind":"action"}]}]},{"id":"properties","name":"Properties","description":"Properties.","findings":[{"id":"properties-finding","name":"Properties","description":"Properties.","questions":[{"text":"What are the physical properties, and how are they tested?","kind":"measurement"},{"text":"Which standards define the tests?","kind":"provenance"}]}]}]},{"id":"use","name":"Use","description":"Stone industry and art.","layers":[{"id":"quarrying","name":"Quarrying","description":"Quarrying and fabrication.","findings":[{"id":"quarrying-finding","name":"Quarrying","description":"Quarrying.","questions":[{"text":"How is marble quarried, cut and finished, and what safety rules apply?","kind":"provenance"},{"text":"Which entry fits the stone industry?","kind":"action"}]}]},{"id":"art","name":"Art","description":"Sculpture and architecture.","findings":[{"id":"art-finding","name":"Art","description":"Art.","questions":[{"text":"How has marble been used in sculpture and architecture through history?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]}]},{"id":"care","name":"Care","description":"Conservation.","layers":[{"id":"conservation","name":"Conservation","description":"Conservation.","findings":[{"id":"conservation-finding","name":"Conservation","description":"Conservation.","questions":[{"text":"How is marble conserved against weathering, pollution and staining?","kind":"provenance"},{"text":"Which entry fits stone conservation?","kind":"action"}]}]},{"id":"maintenance","name":"Maintenance","description":"Maintenance in buildings.","findings":[{"id":"maintenance-finding","name":"Maintenance","description":"Maintenance.","questions":[{"text":"How are marble surfaces cleaned and maintained, in general terms?","kind":"provenance"},{"text":"Is the question about a specific monument, which needs a conservator?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Explain what true marble is and how it forms.","Distinguish true marble from polishable limestones sold as marble.","Give care advice for marble surfaces against acids and staining."],"mustNot":["Describe other stones as marble without saying they are not geologically marble.","Recommend acidic cleaners on marble.","Encourage removing marble from protected sites or monuments.","Understate dust and safety hazards in quarrying and cutting."],"requiresHuman":["Any treatment, repair or removal of marble on heritage monuments."]},"ethics":{"considerations":["Marble monuments are shared heritage vulnerable to damage.","Quarry and stone workers face real safety risks."],"affectedParties":["Quarry and stone workers","Owners of marble surfaces","Heritage communities"]},"owners":{"steward":"The quarry operator or owner of the stone; heritage authorities protect monuments.","roles":[],"masterSystems":[]},"relations":[{"target":"Q47069","type":"parent","note":"registry parent class"},{"target":"Q777913","type":"parent","note":"registry parent class"},{"target":"metamorphic rock","type":"related","note":"from limestone"},{"target":"carbonate rock","type":"related","note":"made of calcite or dolomite"},{"target":"limestone","type":"related","note":"by metamorphism"},{"target":"dimension stone","type":"related","note":"and in sculpture"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.marble","Wikidata: Q40861 (https://www.wikidata.org/wiki/Q40861)"]},"properties":{"applicability":"required","items":["density: about 2.6-2.8 g per cubic centimetre","Mohs hardness: 3-4 scale - calcite","compressive strength: about 60-150 MPa"]},"recognition":{"applicability":"required","items":["Recrystallised carbonate rock with interlocking crystals","Reacts with dilute acid","Granite and quartzite do not react with acid; polished limestone is sold as marble but is sedimentary","A crystalline rock, white or coloured with veins, taking a high polish, with sugary texture on fresh surfaces."]},"capabilities":{"applicability":"required","items":["identify marble and its varieties","explain formation and properties","relay standards and conservation","distinguish true marble from trade marble"]},"hazards":{"applicability":"required","items":["Etching and staining by acids","Weathering and sugaring of outdoor marble","Misnaming other stones as marble","Silica-free but dusty quarrying hazards"]},"interfaces":{"applicability":"required","items":["EN 12670 and related natural stone standards","ASTM C503 for marble dimension stone","Quarrying and worker safety rules","Heritage protection of quarries and monuments"]},"context":{"applicability":"required","items":["Sculpture, building, decorative stone and industrial calcium carbonate.","calcitic and dolomitic marble","statuary white marbles such as Carrara and Pentelic","coloured and veined marbles","named commercial marbles by quarry","trade marbles that are limestones or other rocks","crushed marble and ground calcium carbonate"]}},"sources":[{"title":"Wikidata item Q40861: marble","url":"https://www.wikidata.org/wiki/Q40861","note":"identity and sense of the item"},{"title":"Wikipedia: Marble","url":"https://en.wikipedia.org/wiki/Marble","note":"general description of the item"}],"openQuestions":["Should commercial marble names be separate entries?","How should stone standards be linked?","The registry entry has merged aliases naming quarry stones and grain classes; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q40861/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q40861/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T21:24:54Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:59+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}