{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T19:51:39Z", "providers": [ "Claude" ], "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify", "pass": 2, "wave": 3, "engine": "claude", "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T10:00:00Z", "ingestedAt": "2026-10-06T06:57:54+00:00", "fields": [ "agent_conduct", "ethics", "owners" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-06T19:51:53+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q1100", "registryId": "vr.tr.tellurium", "name": "tellurium", "version": "0.2.0-wave.3", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q1100/", "model": { "registry_id": "vr.tr.tellurium", "name": "tellurium", "purpose": "Let an agent explain tellurium as an element and material, relay its uses, supply and hazards from reference and regulatory sources, and separate it from selenium and from its compounds.", "definition": "A brittle, silvery-white metalloid, chemical element 52, in group 16 with sulfur and selenium; rare in the crust and obtained mainly as a by-product of copper refining, it is used in cadmium telluride solar cells, thermoelectric devices, steel and copper alloys, rubber vulcanisation and rewritable optical media.", "what_it_is_for": "Solar cells, thermoelectrics, alloys and other industrial uses.", "affordances": [ "explain properties and isotopes", "explain uses and supply", "relay safety and handling information", "distinguish it from selenium and compounds" ], "distinguishing_features": [ "Metalloid of group 16", "Obtained as a by-product of copper refining", "Key material for cadmium telluride photovoltaics", "Exposure causes garlic-like breath odour" ], "appearance": "Silvery-white, brittle crystalline solid, or grey-brown powder in amorphous form.", "visual_identification": [ "Element 52, group 16 metalloid", "Brittle silvery crystals", "Selenium is lighter and red or grey; tellurides are compounds" ], "physical_properties": [ { "quantity": "atomic number", "typical_range": "52", "unit": "", "note": "" }, { "quantity": "melting point", "typical_range": "about 450", "unit": "degrees C", "note": "" }, { "quantity": "density", "typical_range": "about 6.2", "unit": "g per cubic centimetre", "note": "" }, { "quantity": "crustal abundance", "typical_range": "about 1", "unit": "part per billion", "note": "very rare" } ], "families_and_kinds": [ "crystalline and amorphous tellurium", "tellurium isotopes, including long-lived tellurium-128 and 130", "tellurides such as cadmium telluride and bismuth telluride", "tellurium in alloys and glass" ], "related_models": [ { "relation": "is a kind of", "target": "metalloid", "why": "the classification" }, { "relation": "is related to", "target": "selenium", "why": "the neighbouring group 16 element" }, { "relation": "is used in", "target": "solar cell", "why": "cadmium telluride photovoltaics" }, { "relation": "is obtained from", "target": "copper refining", "why": "anode slimes" } ], "identifiers": [ { "scheme": "chemical symbol", "value_or_pattern": "Te", "note": "" }, { "scheme": "CAS number", "value_or_pattern": "13494-80-9", "note": "" } ], "standards_and_regulation": [ "Occupational exposure limits for tellurium and compounds", "Chemical classification and labelling rules", "Critical raw material assessments in the EU and elsewhere" ], "failure_modes_and_hazards": [ "Toxicity of compounds and garlic breath from low exposure", "Supply constraints as a by-product metal", "Confusion with selenium in analysis" ], "in_scope": [], "out_of_scope": [], "characteristics": [], "agent_conduct": { "may": [ "Explain tellurium's properties, sources and uses such as solar cells and alloys.", "Report supply and production data from published sources." ], "must_not": [ "Encourage handling tellurium compounds without protective measures or ventilation.", "Confuse tellurium with selenium when reporting analysis results.", "Present supply forecasts as certain for a by-product metal.", "Advise discarding tellurium-bearing waste outside hazardous waste rules." ], "requires_human": [ "Disposing of tellurium compounds or devices containing them." ] }, "ethics": { "considerations": [ "Toxic compounds put workers and recyclers at risk.", "Demand for critical metals shapes mining impacts in other countries." ], "affected_parties": [ "Workers handling compounds", "Recyclers", "Communities near refineries" ] }, "owners": { "steward": "The person or company that holds it; workplace safety and waste authorities set the rules.", "master_systems": [] } }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q1100: tellurium", "url": "https://www.wikidata.org/wiki/Q1100", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Tellurium", "url": "https://en.wikipedia.org/wiki/Tellurium", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "element", "name": "Element", "description": "What tellurium is.", "rationale": "Chemistry.", "layers": [ { "id": "properties", "name": "Properties", "description": "Properties.", "findings": [ { "id": "properties-finding", "name": "Properties", "description": "Properties.", "questions": [ { "text": "What are the physical and chemical properties and isotopes of tellurium?", "kind": "definition" }, { "text": "Is the question about the element, a telluride compound or selenium?", "kind": "boundary" } ] } ] }, { "id": "occurrence", "name": "Occurrence", "description": "Occurrence and production.", "findings": [ { "id": "occurrence-finding", "name": "Occurrence", "description": "Occurrence.", "questions": [ { "text": "Where does tellurium occur, and how is it produced from copper refining?", "kind": "provenance" }, { "text": "Which entry fits copper refining?", "kind": "action" } ] } ] } ] }, { "id": "use", "name": "Use", "description": "Applications.", "rationale": "Uses.", "layers": [ { "id": "applications", "name": "Applications", "description": "Uses.", "findings": [ { "id": "applications-finding", "name": "Applications", "description": "Applications.", "questions": [ { "text": "How is tellurium used in solar cells, thermoelectrics, alloys and other products?", "kind": "provenance" }, { "text": "Which entry fits cadmium telluride?", "kind": "action" } ] } ] }, { "id": "supply", "name": "Supply", "description": "Supply and criticality.", "findings": [ { "id": "supply-finding", "name": "Supply", "description": "Supply.", "questions": [ { "text": "What are production volumes, producers and criticality assessments, with sources?", "kind": "measurement" }, { "text": "Which sources and years are cited?", "kind": "provenance" } ] } ] } ] }, { "id": "safety", "name": "Safety", "description": "Handling and health.", "rationale": "Safety.", "layers": [ { "id": "handling", "name": "Handling", "description": "Handling.", "findings": [ { "id": "handling-finding", "name": "Handling", "description": "Handling.", "questions": [ { "text": "What handling and exposure limits apply to tellurium and its compounds?", "kind": "provenance" }, { "text": "Is the question about a specific workplace, which needs its safety officer?", "kind": "boundary" } ] } ] }, { "id": "health", "name": "Health", "description": "Health effects.", "findings": [ { "id": "health-finding", "name": "Health", "description": "Health.", "questions": [ { "text": "What health effects are documented, and what do authorities advise?", "kind": "provenance" }, { "text": "Is the user asking about their own exposure, which needs a clinician?", "kind": "boundary" } ] } ] } ] }, { "id": "context", "name": "Context", "description": "History and study.", "rationale": "Context.", "layers": [ { "id": "history", "name": "History", "description": "Discovery.", "findings": [ { "id": "history-finding", "name": "History", "description": "History.", "questions": [ { "text": "How was tellurium discovered and named?", "kind": "provenance" }, { "text": "Which references are standard?", "kind": "provenance" } ] } ] }, { "id": "research", "name": "Research", "description": "Research.", "findings": [ { "id": "research-finding", "name": "Research", "description": "Research.", "questions": [ { "text": "What research involves tellurium, such as topological materials and recycling?", "kind": "provenance" }, { "text": "Which entry fits thermoelectric materials?", "kind": "action" } ] } ] } ] } ] }, "openQuestions": [ "Should isotopes and tellurides be separate entries?", "How should supply and criticality reports be linked?", "The registry entry has merged isotope aliases; should they be split off?" ], "statistics": { "bundles": 4, "layers": 8, "findings": 8, "questions": 16 } }