{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.beryllium","code":"thing-q569","url":"https://ver.cy/models/thing/q569/","name":"beryllium","alternateNames":["beryllium-8","beryllium-7","beryllium-13","beryllium-12","beryllium-11","beryllium-6","beryllium-5","beryllium-14","beryllium-15","beryllium-16","beryllium-17","beryllium-10"],"kind":"thing","status":"published","version":"0.2.0-wave.4","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"The chemical element with atomic number 4, symbol Be, a light, stiff, steel-grey alkaline earth metal with a high melting point, used in aerospace components, X-ray windows, copper-beryllium alloys and precision instruments, with stable beryllium-9 and radioactive isotopes such as beryllium-7 and beryllium-10 used in research and dating, and exotic short-lived isotopes such as beryllium-6, beryllium-8, beryllium-11, beryllium-12 and beryllium-13; beryllium dust is highly toxic, causing chronic beryllium disease. The model gives public reference information only.","purpose":"Let an agent explain beryllium, relay properties, uses, isotopes and occupational hazards from chemistry and occupational health sources at a public level, describe the isotopes the registry aliases name as a group, and distinguish beryllium from magnesium and other alkaline earth metals and from beryl, the mineral, without operational nuclear detail.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Very light and stiff","X-ray transparent","Toxic dust","Useful isotopes"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What beryllium is.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is beryllium, and how does it differ from magnesium, other alkaline earth metals and beryl?","kind":"definition"},{"text":"Is the question about public reference facts, occupational health or operational detail the model does not give?","kind":"boundary"}]}]},{"id":"isotopes","name":"Isotopes","description":"Isotopes.","findings":[{"id":"isotopes-finding","name":"Isotopes","description":"Isotopes.","questions":[{"text":"What are beryllium-9, beryllium-7, beryllium-10, beryllium-8 and the exotic isotopes?","kind":"definition"},{"text":"Which entry fits isotopes of beryllium?","kind":"action"}]}]}]},{"id":"science","name":"Science","description":"Properties and uses.","layers":[{"id":"properties","name":"Properties","description":"Properties.","findings":[{"id":"properties-finding","name":"Properties","description":"Properties.","questions":[{"text":"What makes beryllium light, stiff and X-ray transparent?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"uses","name":"Uses","description":"Uses.","findings":[{"id":"uses-finding","name":"Uses","description":"Uses.","questions":[{"text":"How is beryllium used in aerospace, telescopes, X-ray windows and alloys?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"health","name":"Health","description":"Occupational health.","layers":[{"id":"disease","name":"Disease","description":"Chronic beryllium disease.","findings":[{"id":"disease-finding","name":"Disease","description":"Disease.","questions":[{"text":"What is chronic beryllium disease, and how is exposure controlled, as occupational health agencies describe?","kind":"provenance"},{"text":"Which entry fits berylliosis?","kind":"action"}]}]},{"id":"limits","name":"Limits","description":"Exposure limits.","findings":[{"id":"limits-finding","name":"Limits","description":"Limits.","questions":[{"text":"What exposure limits apply?","kind":"provenance"},{"text":"Which entry fits occupational exposure limit?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Dating and history.","layers":[{"id":"dating","name":"Dating","description":"Isotope dating.","findings":[{"id":"dating-finding","name":"Dating","description":"Dating.","questions":[{"text":"How is beryllium-10 used to date ice cores and exposed rock surfaces?","kind":"provenance"},{"text":"Which entry fits surface exposure dating?","kind":"action"}]}]},{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How was beryllium discovered and first isolated?","kind":"provenance"},{"text":"Which entry fits the history of chemistry?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Explain beryllium's properties, isotopes and general uses from chemistry references.","Relay occupational exposure guidance on beryllium dust from health and safety bodies."],"mustNot":["Advise machining, grinding or handling beryllium without controls against dust.","Give operational detail on beryllium in nuclear weapons or reactors.","Downplay chronic beryllium disease.","List the many isotopes in the registry aliases as separate elements."],"requiresHuman":["Approving work that may expose people to beryllium dust."]},"ethics":{"considerations":["Beryllium dust causes chronic lung disease, sometimes years after exposure.","Nuclear uses carry proliferation risk, so detail must stay at public level."],"affectedParties":["Workers in metal and electronics","Families exposed to dust on clothing","The public"]},"owners":{"steward":"Nobody owns the element; producers and occupational safety regulators answer for its use.","roles":[],"masterSystems":["Chemical substance registers"]},"relations":[{"target":"Q11426","type":"parent","note":"registry parent class"},{"target":"Q19563","type":"parent","note":"registry parent class"},{"target":"Q428766","type":"parent","note":"registry parent class"},{"target":"alkaline earth metal","type":"related","note":"in registry terms"},{"target":"beryl","type":"related"},{"target":"berylliosis","type":"related","note":"chronic beryllium disease"},{"target":"surface exposure dating","type":"related","note":"as beryllium-10"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.beryllium","Wikidata: Q569 (https://www.wikidata.org/wiki/Q569)","CAS: 7440-41-7 beryllium","atomic number: 4"]},"properties":{"applicability":"required","items":["atomic number: 4 count","density: about 1.85 g/cm3","melting point: about 1287 C","beryllium-10 half-life: about 1.39 million years note - used in dating"]},"recognition":{"applicability":"required","items":["Element 4, a light alkaline earth metal","Beryllium-9, beryllium-7, beryllium-10, beryllium-8 and other isotopes","Magnesium is heavier and less toxic; beryl is the mineral ore; beryllium oxide is a ceramic","A light, hard, steel-grey metal."]},"capabilities":{"applicability":"required","items":["explain the element","relay uses and hazards","describe isotopes","distinguish related substances"]},"hazards":{"applicability":"required","items":["Chronic beryllium disease from dust","Agents giving operational nuclear detail","Registry aliases listing many isotopes"]},"interfaces":{"applicability":"required","items":["OSHA and EU occupational exposure limits for beryllium","Export controls on beryllium materials"]},"context":{"applicability":"required","items":["Aerospace, electronics, X-ray and research uses.","metallic beryllium","copper-beryllium alloys","beryllium oxide ceramics","stable beryllium-9","cosmogenic beryllium-7 and beryllium-10","exotic isotopes such as beryllium-8 and beryllium-13"]}},"sources":[{"title":"Wikidata item Q569: beryllium","url":"https://www.wikidata.org/wiki/Q569","note":"identity and sense of the item"},{"title":"Wikipedia: Beryllium","url":"https://en.wikipedia.org/wiki/Beryllium","note":"general description of the item"}],"openQuestions":["Should the isotopes be grouped as one sub-entry?","How should chemistry and occupational health sources be linked?","The registry entry lists isotope aliases; should they be grouped?"],"resources":{"spec":"/models/things/publications/thing-q569/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q569/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T18:53:13Z","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 2026-10-06T19:52:01+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}