{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.quartz","code":"thing-q43010","url":"https://ver.cy/models/thing/q43010/","name":"quartz","alternateNames":["cat's eye quartz","Burgpreppach sandstone","synthetic quartz","sinople","Shocked quartz","star quartz","hydrothermal quartz","prase","sceptre quartz","apricotine","chalcedony","rock crystal"],"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 hard, crystalline mineral of silicon dioxide, the second most abundant mineral in the continental crust, occurring as clear rock crystal and coloured varieties such as amethyst, citrine, smoky quartz, rose quartz, cat s eye and star quartz, as microcrystalline chalcedony and agate, as a constituent of sandstones such as the Burgpreppach sandstone, and as shocked quartz formed by meteorite impacts; synthetic quartz is grown for electronics, and quartz is used in glass, oscillators, abrasives and gemstones.","purpose":"Let an agent explain quartz and its varieties, relay structure, properties and occurrence from mineralogical references, describe uses from electronics to gems, and distinguish quartz from other silica minerals, from glass and from quartzite.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Hexagonal crystals","Hardness 7","Piezoelectric","Many varieties"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What quartz is.","layers":[{"id":"definition","name":"Definition","description":"Definition and structure.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What is quartz, and how does it differ from opal, glass and quartzite?","kind":"definition"},{"text":"Is the question about quartz in general, a variety, a rock or a product?","kind":"boundary"}]}]},{"id":"varieties","name":"Varieties","description":"Varieties.","findings":[{"id":"varieties-finding","name":"Varieties","description":"Varieties.","questions":[{"text":"What are rock crystal, amethyst, citrine, smoky, rose, cat s eye and star quartz, chalcedony and shocked quartz?","kind":"definition"},{"text":"Which entry fits the specific variety?","kind":"action"}]}]}]},{"id":"science","name":"Science","description":"Properties and occurrence.","layers":[{"id":"properties","name":"Properties","description":"Properties.","findings":[{"id":"properties-finding","name":"Properties","description":"Properties.","questions":[{"text":"What are the physical properties of quartz, including piezoelectricity and polymorphs?","kind":"provenance"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"occurrence","name":"Occurrence","description":"Occurrence.","findings":[{"id":"occurrence-finding","name":"Occurrence","description":"Occurrence.","questions":[{"text":"Where does quartz occur, in igneous, metamorphic and sedimentary rocks such as sandstones?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]}]},{"id":"use","name":"Use","description":"Uses.","layers":[{"id":"industry","name":"Industry","description":"Industry and electronics.","findings":[{"id":"industry-finding","name":"Industry","description":"Industry.","questions":[{"text":"How is quartz used in glass, oscillators, optics and abrasives, and how is synthetic quartz grown?","kind":"provenance"},{"text":"Which entry fits crystal oscillator?","kind":"action"}]}]},{"id":"gems","name":"Gems","description":"Gems.","findings":[{"id":"gems-finding","name":"Gems","description":"Gems.","questions":[{"text":"How are quartz gems cut, treated and valued?","kind":"provenance"},{"text":"Which entry fits gemstone?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"Safety and culture.","layers":[{"id":"safety","name":"Safety","description":"Safety.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"What are the hazards of silica dust, and how are they controlled?","kind":"provenance"},{"text":"Which entry fits silicosis?","kind":"action"}]}]},{"id":"culture","name":"Culture","description":"Culture.","findings":[{"id":"culture-finding","name":"Culture","description":"Culture.","questions":[{"text":"How has quartz featured in history, folklore and unproven healing claims, with claims attributed?","kind":"provenance"},{"text":"Is the presentation evidence-based?","kind":"boundary"}]}]}]}]},"agentConduct":{"may":["Describe quartz, its varieties and uses from mineralogical sources.","Identify specimens with stated confidence and methods.","Warn generally about silica dust in cutting and grinding."],"mustNot":["Misrepresent treated, synthetic or glass items as natural quartz gems.","Advise cutting quartz or engineered stone without dust control.","Encourage collecting specimens from protected sites.","Present crystal healing claims as medical fact."],"requiresHuman":["Valuing gems for sale."]},"ethics":{"considerations":["Silicosis from quartz dust kills workers, including in stone benchtop trades.","Undisclosed treatments defraud buyers."],"affectedParties":["Stoneworkers and miners","Gem buyers","Collectors"]},"owners":{"steward":"The person who holds a specimen; mineral rights belong to the landowner or state.","roles":[],"masterSystems":["Mineral databases"]},"relations":[{"target":"Q12550001","type":"parent","note":"registry parent class"},{"target":"Q1277475","type":"parent","note":"registry parent class"},{"target":"tectosilicates","type":"related","note":"in registry terms"},{"target":"dioxosilicate minerals (silica family)","type":"related","note":"in registry terms"},{"target":"silicon dioxide","type":"related","note":"in crystalline form"},{"target":"crystal oscillator","type":"related","note":"for timing"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.quartz","Wikidata: Q43010 (https://www.wikidata.org/wiki/Q43010)","IMA: quartz grandfathered species","Strunz: 4.DA.05 quartz"]},"properties":{"applicability":"required","items":["hardness: 7 Mohs","density: 2.65 g/cm^3","formula: SiO2 formula","crustal abundance: about 12 percent - by volume"]},"recognition":{"applicability":"required","items":["Crystalline silicon dioxide","Rock crystal, amethyst, citrine, smoky, rose, cat s eye and star quartz, shocked quartz, synthetic quartz, quartz sandstones","Opal is amorphous silica; glass is non-crystalline; quartzite is a metamorphic rock of quartz","Hexagonal prismatic crystals, clear or coloured, with a glassy lustre and conchoidal fracture."]},"capabilities":{"applicability":"required","items":["explain structure and varieties","relay properties and occurrence","describe uses","distinguish related materials"]},"hazards":{"applicability":"required","items":["Silicosis from dust","Confusing quartz with glass or other silica minerals","Undisclosed treated or synthetic gems"]},"interfaces":{"applicability":"required","items":["Gem trade standards and disclosure of treatments","Occupational silica dust limits","Electronics component standards"]},"context":{"applicability":"required","items":["Gems, electronics, glass and industry.","macrocrystalline varieties such as rock crystal, amethyst, citrine, smoky and rose quartz","chatoyant and asteriated varieties such as cat s eye and star quartz","microcrystalline chalcedony, agate and jasper","shocked quartz from impacts","synthetic quartz for electronics","quartz-rich rocks such as sandstones and quartzite"]}},"sources":[{"title":"Wikidata item Q43010: quartz","url":"https://www.wikidata.org/wiki/Q43010","note":"identity and sense of the item"},{"title":"Wikipedia: Quartz","url":"https://en.wikipedia.org/wiki/Quartz","note":"general description of the item"}],"openQuestions":["Should amethyst and chalcedony be separate primary entries?","How should mineralogical references be linked?","The registry entry has merged aliases naming varieties and a local sandstone; should they be split off?"],"resources":{"spec":"/models/things/publications/thing-q43010/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q43010/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T06:11:31Z","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 2026-10-06T19:52:00+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}