{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.eucryptite","code":"thing-q1077131","url":"https://ver.cy/models/thing/q1077131/","name":"eucryptite","alternateNames":[],"kind":"thing","status":"published","version":"0.1.0-research.1","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.MAT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"Eucryptite is a lithium aluminium silicate mineral with ideal formula LiAlSiO4, whose naturally occurring structure is distinguished from the synthetic high-temperature polymorph commonly called beta-eucryptite.","purpose":"Enable an agent to identify eucryptite, establish its composition and crystal form, and judge whether a specimen or material lot is suitable for a proposed characterization, processing or use.","scope":{"in":["Eucryptite identification supported by chemical and crystallographic evidence","Polymorph assignment and uncertainty about unqualified eucryptite labels","Composition, phase purity, intergrowths and material grade","Specimen provenance and thermal or pressure history","Measured thermal response, microstructure and condition","Evidence needed to authorize sampling, processing and material selection"],"out":["Whole pegmatite deposits, mineral resources and mining operations","Other lithium minerals except as identification alternatives or associated phases","Complete glass-ceramic formulations and finished products containing eucryptite","Manufacturing equipment and synthesis processes as independently managed systems","Lithium extraction plants and downstream lithium compounds"],"boundaries":[]},"distinguishingFeatures":["Check composition against LiAlSiO4; lithium content alone cannot establish eucryptite identity. Reference: [Handbook of Mineralogy](https://www.handbookofmineralogy.org/pdfs/eucryptite.pdf).","Require a diffraction match to the claimed crystal form: the same nominal LiAlSiO4 composition does not distinguish natural α-eucryptite from β-eucryptite.","Use spatially resolved phase identification to distinguish eucryptite grains from a bulk specimen containing associated albite, quartz or other lithium minerals.","Treat fluorescence and optical appearance as supporting observations that require chemical or diffraction confirmation.","Do not identify eucryptite from low thermal expansion alone; β-eucryptite measurements depend on crystallographic direction and atomic ordering. Reference: [Thermal Expansion of Beta Eucryptite](https://ceramics.onlinelibrary.wiley.com/doi/abs/10.1111/j.1151-2916.1974.tb10909.x)."],"structure":{"bundles":[{"id":"identity-and-polymorph","name":"Identity and polymorph","description":"Establish what the eucryptite label denotes for this material.","layers":[{"id":"chemical-identity","name":"Chemical identity","description":"Connect the registered name to the analyzed lithium aluminosilicate.","findings":[{"id":"formula-and-label-agreement","name":"Formula and label agreement","description":"Require evidence linking the eucryptite label to the analyzed material rather than accepting a supplier or collection label as proof.","questions":[{"text":"Does the measured composition support LiAlSiO4, and how was lithium measured?","id":"formula-and-label-agreement-q01","kind":"measurement"},{"text":"Does the label identify a mineral grain, a pure material lot or a eucryptite-containing mixture?","id":"formula-and-label-agreement-q02","kind":"boundary"}]}]},{"id":"crystal-form-assignment","name":"Crystal form assignment","description":"Resolve the structural meaning of α, β or unqualified eucryptite.","findings":[{"id":"polymorph-evidence","name":"Polymorph evidence","description":"Make crystal-form assignment traceable to measurements and their conditions.","questions":[{"text":"Which diffraction reference and diagnostic reflections support the assigned eucryptite form?","id":"polymorph-evidence-q01","kind":"provenance"},{"text":"At what temperature and pressure was the form identified, and were competing phases excluded?","id":"polymorph-evidence-q02","kind":"measurement"},{"text":"Which property claims must remain unavailable until the crystal form is resolved?","id":"polymorph-evidence-q03","kind":"action"}]}]}]},{"id":"composition-and-phase-purity","name":"Composition and phase purity","description":"Distinguish eucryptite chemistry from the chemistry of its surroundings.","layers":[{"id":"eucryptite-grain-chemistry","name":"Eucryptite grain chemistry","description":"Assess composition at a scale that isolates the claimed phase.","findings":[{"id":"stoichiometry-and-substitution","name":"Stoichiometry and substitution","description":"Record departures from nominal composition without prematurely attributing them to lattice substitution.","questions":[{"text":"What Li:Al:Si ratios and minor-element concentrations were measured in identified eucryptite grains?","id":"stoichiometry-and-substitution-q01","kind":"measurement"},{"text":"Can observed departures be distinguished from inclusions, adjacent phases or analytical limitations?","id":"stoichiometry-and-substitution-q02","kind":"boundary"}]}]},{"id":"mixture-and-grade","name":"Mixture and grade","description":"Determine how much eucryptite is present and what accompanies it.","findings":[{"id":"phase-fraction-and-intergrowth","name":"Phase fraction and intergrowth","description":"Qualify purity claims using phase analysis and sampling evidence.","questions":[{"text":"What fractions of eucryptite, other crystalline phases and amorphous material are present?","id":"phase-fraction-and-intergrowth-q01","kind":"measurement"},{"text":"Does the analyzed subsample represent the full specimen or production lot?","id":"phase-fraction-and-intergrowth-q02","kind":"provenance"},{"text":"What purity and impurity limits must this eucryptite meet for the proposed use?","id":"phase-fraction-and-intergrowth-q03","kind":"action"}]}]}]},{"id":"origin-and-transformation-history","name":"Origin and transformation history","description":"Track where the material came from and which treatments could have changed it.","layers":[{"id":"material-lineage","name":"Material lineage","description":"Connect the tested material to its geological or production origin.","findings":[{"id":"specimen-or-batch-traceability","name":"Specimen or batch traceability","description":"Preserve the distinction between a locality attribution and a documented synthetic batch.","questions":[{"text":"Is this eucryptite natural or synthetic, and which specimen or batch records support that assignment?","id":"specimen-or-batch-traceability-q01","kind":"provenance"},{"text":"Which host assemblage or precursor composition is linked to the tested portion?","id":"specimen-or-batch-traceability-q02","kind":"provenance"}]}]},{"id":"treatment-and-retained-state","name":"Treatment and retained state","description":"Connect heating, pressure and cooling history to the material actually examined.","findings":[{"id":"transformation-check","name":"Transformation check","description":"Require evidence before claiming that processing preserved or changed eucryptite.","questions":[{"text":"What temperature, pressure, atmosphere and cooling history preceded characterization?","id":"transformation-check-q01","kind":"provenance"},{"text":"What before-and-after measurements show changes in phase, ordering or secondary-phase content?","id":"transformation-check-q02","kind":"measurement"},{"text":"Which post-treatment checks are necessary before reusing the original material-property record?","id":"transformation-check-q03","kind":"action"}]}]}]},{"id":"thermal-response-and-integrity","name":"Thermal response and integrity","description":"Evaluate eucryptite dimensional behavior at the crystal and specimen scales.","layers":[{"id":"crystal-expansion","name":"Crystal expansion","description":"Keep directional lattice measurements tied to the identified form.","findings":[{"id":"qualified-expansion-coefficients","name":"Qualified expansion coefficients","description":"Store expansion claims with their axes, temperature ranges and structural state.","questions":[{"text":"What axial and volumetric expansion coefficients were measured for this identified eucryptite form?","id":"qualified-expansion-coefficients-q01","kind":"measurement"},{"text":"Over which temperature interval, with what uncertainty and evidence of atomic ordering, do those values apply?","id":"qualified-expansion-coefficients-q02","kind":"measurement"}]}]},{"id":"aggregate-integrity","name":"Aggregate integrity","description":"Assess dimensional response and damage in powders or consolidated specimens.","findings":[{"id":"bulk-response-and-cycling","name":"Bulk response and cycling","description":"Separate reversible dimensional change from specimen damage and irreversible drift.","questions":[{"text":"How does bulk dilatometry compare with lattice expansion for the same phase assemblage?","id":"bulk-response-and-cycling-q01","kind":"measurement"},{"text":"What porosity, texture or microcracking accompanies hysteresis or permanent dimensional change?","id":"bulk-response-and-cycling-q02","kind":"measurement"},{"text":"Does repeated cycling meet the proposed dimensional tolerance without unacceptable damage?","id":"bulk-response-and-cycling-q03","kind":"action"}]}]}]},{"id":"use-and-handling-qualification","name":"Use and handling qualification","description":"Turn eucryptite evidence into bounded decisions about testing, processing and selection.","layers":[{"id":"application-evidence","name":"Application evidence","description":"Match the actual eucryptite material to a stated requirement.","findings":[{"id":"fit-for-proposed-use","name":"Fit for proposed use","description":"Require relevant measurements before accepting a eucryptite performance claim.","questions":[{"text":"Which requirement concerns the eucryptite phase itself, and which concerns a composite or finished component?","id":"fit-for-proposed-use-q01","kind":"boundary"},{"text":"Are the supporting measurements from the same polymorph, composition and material condition as the proposed lot?","id":"fit-for-proposed-use-q02","kind":"provenance"},{"text":"What acceptance test would establish suitability for the proposed use?","id":"fit-for-proposed-use-q03","kind":"action"}]}]},{"id":"lot-specific-handling","name":"Lot-specific handling","description":"Resolve documentation and exposure questions for the physical material being handled.","findings":[{"id":"identity-documentation-and-dust","name":"Identity documentation and dust","description":"Link handling decisions to verified material identifiers, impurities and operations rather than inferred mineral-wide classifications.","questions":[{"text":"Which verified CAS, EC or other identifiers, if applicable, describe this eucryptite material rather than a mixture?","id":"identity-documentation-and-dust-q01","kind":"definition"},{"text":"What lot-specific documentation and impurity measurements support handling decisions for cutting, grinding or powder transfer?","id":"identity-documentation-and-dust-q02","kind":"provenance"},{"text":"What controls are required for the proposed operation given the measured particle characteristics and identified accompanying phases?","id":"identity-documentation-and-dust-q03","kind":"action"}]}]}]},{"id":"evidence-and-external-alignment","name":"Evidence and external alignment","description":"What the world already says about this thing, gathered so the model can be checked against it.","layers":[{"id":"reported-evidence","name":"Reported evidence","description":"Findings from the breadth pass, kept separate from the structural claims.","findings":[{"id":"evidence-confidence-notes","name":"Check these first","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these check these first hold for the sense of eucryptite this model covers, and on what evidence?","id":"evidence-confidence-notes-q01","kind":"provenance"}]},{"id":"evidence-kinds","name":"Kinds and varieties","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these kinds and varieties hold for the sense of eucryptite this model covers, and on what evidence?","id":"evidence-kinds-q01","kind":"provenance"}]},{"id":"evidence-identifiers","name":"Identifiers and schemes","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these identifiers and schemes hold for the sense of eucryptite this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-real-world-use","name":"Real-world use","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these real-world use hold for the sense of eucryptite this model covers, and on what evidence?","id":"evidence-real-world-use-q01","kind":"provenance"}]},{"id":"evidence-measurements","name":"Typical measurements","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these typical measurements hold for the sense of eucryptite this model covers, and on what evidence?","id":"evidence-measurements-q01","kind":"provenance"}]},{"id":"evidence-failure-modes-and-hazards","name":"Failure modes and hazards","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these failure modes and hazards hold for the sense of eucryptite this model covers, and on what evidence?","id":"evidence-failure-modes-and-hazards-q01","kind":"provenance"}]},{"id":"evidence-neighbours","name":"Neighbouring kinds and how to tell them apart","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these neighbouring kinds and how to tell them apart hold for the sense of eucryptite this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe eucryptite and its lithium content from mineralogical sources.","Record specimens and assays for an authorized survey or collection."],"mustNot":["Overstate the lithium grade of a deposit in resource reports.","Help mine or collect without the landowner's or authority's permission.","Confuse the natural mineral with the synthetic ceramic phase when describing properties."],"requiresHuman":["Approving exploration or extraction based on its assays."]},"ethics":{"considerations":["Lithium mining affects water, land and local communities.","Inflated resource claims mislead investors and communities."],"affectedParties":["Communities near deposits","Investors","Collectors"]},"owners":{"steward":"For deposits, the mineral rights holder under the mining authority; for specimens, their holder.","roles":[],"masterSystems":["Mining cadastres and mineral rights registers"]},"relations":[{"target":"Q3777860","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.eucryptite","Wikidata: Q1077131 (https://www.wikidata.org/wiki/Q1077131)"]},"properties":{"applicability":"required","items":["Chemical composition: Li, Al and Si atomic ratios; elemental or oxide mass fractions with analytical uncertainty","Assigned crystal form: α-eucryptite; β-eucryptite; another explicitly evidenced form; unresolved","Eucryptite phase fraction: Mass % with method, uncertainty and amorphous-content treatment","Origin and material lineage: Links to locality and specimen, or synthesis batch and subsequent treatments","Diffraction fingerprint: d-spacings in Å, intensities, refined cell parameters and reference-pattern identifier","Thermal expansion: K^-1, resolved by crystal axis or bulk specimen, with temperature interval","Microstructural condition: Grain size, texture, porosity and microcracking, each measured or explicitly unknown","Thermal and pressure exposure: Temperature in °C or K, pressure in MPa or GPa, duration and heating/cooling rates","Handling form and impurity evidence: Intact specimen; granules; powder; consolidated ceramic; identified impurities and documentation status"]},"recognition":{"applicability":"required","items":["Colourless to white or brownish grains or masses in lithium-rich pegmatites.","Often fluoresces pink under shortwave ultraviolet light; confirmed by analysis."]},"capabilities":{"applicability":"required","items":["Select complementary chemical and diffraction measurements to verify eucryptite identity.","Separate properties of the eucryptite phase from those of its host rock or ceramic.","Compare material lots using polymorph, purity, microstructure and measurement conditions.","Assess measured dimensional stability against a specified temperature range and tolerance.","Plan sampling or thermal treatment with explicit acceptance criteria and post-treatment checks.","Flag unsupported identifiers, hazard claims and transferred material properties for review."]},"hazards":{"applicability":"required","items":["Pegmatite mining and crushing produce silica dust harmful to lungs."]},"interfaces":{"applicability":"required","items":["The official mineral list maintained by the International Mineralogical Association Commission on New Minerals, Nomenclature and Classification recognizes eucryptite as a mineral species."]},"context":{"applicability":"required","items":["Eucryptite occurs in some lithium-bearing pegmatites and is encountered in geological surveys, mineral collections and laboratory studies.","Its identification supports interpretation of mineral assemblages and characterization of lithium-bearing materials.","Materials research must distinguish the natural mineral from the synthetic high-temperature polymorph because their structures and properties differ."]}},"sources":[{"title":"Wikidata item Q1077131: eucryptite","url":"https://www.wikidata.org/wiki/Q1077131","note":"identity and sense of the item"},{"title":"Wikipedia: Eucryptite","url":"https://en.wikipedia.org/wiki/Eucryptite","note":"general description of the item"}],"openQuestions":["Does vr.tr.eucryptite intend the natural mineral species alone, or also synthetic β-eucryptite and other named LiAlSiO4 forms?","Which authoritative identifiers distinguish eucryptite forms and mixtures, and which identifiers are applicable to the actual supplied material?","What composition and phase-fraction limits define useful eucryptite grades for the intended applications?","Which experimentally supported temperature-pressure boundaries and transformation kinetics apply to each included form?","What lot-specific evidence remains necessary for thermal-cycling performance, impurity-related exposure and powder handling?"],"resources":{"spec":"/models/things/publications/thing-q1077131/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q1077131/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T09:33:28Z","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 2026-10-07T10:10:25+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}