{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.gedrite","code":"thing-q2252659","url":"https://ver.cy/models/thing/q2252659/","name":"gedrite","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":"Gedrite is an orthorhombic, aluminium-rich amphibole mineral with ideal end-member composition Mg5Al2(Si6Al2)O22(OH)2, typically occurring in metamorphic rocks.","purpose":"Enable an agent to recognize gedrite, assess the identity and condition of gedrite-bearing material, and choose appropriate characterization or handling actions.","scope":{"in":["Gedrite identification with an explicitly stated amphibole nomenclature reference","Grain-scale chemistry, structural formula calculations, and compositional variability","Crystallographic and petrographic evidence distinguishing neighbouring amphiboles","Gedrite abundance, intergrowths, alteration, and specimen morphology","Sample-specific analytical suitability and handling constraints"],"out":["Complete classification and history of the host rock","Independent models of anthophyllite, ferro-gedrite, or other amphiboles","Mining operations, deposits, and resource economics","Products containing gedrite-bearing material","General laboratory procedures and jurisdiction-wide exposure regulations"],"boundaries":[]},"distinguishingFeatures":["Use grain chemistry and a cited naming scheme to distinguish aluminous gedrite compositions from anthophyllite; appearance alone does not settle the boundary.","Test orthorhombic symmetry by diffraction when separating gedrite from monoclinic amphibole candidates such as cummingtonite.","Resolve magnesium, iron valence, and site allocation before distinguishing gedrite from ferro-gedrite or interpreting historical species names.","Combine structural and chemical observations from the same grain to distinguish gedrite from a mixed amphibole analysis.","Use cleavage and optical observations as supporting checks rather than unique identifiers; the reported properties overlap those of other amphiboles. Reference: [Handbook of Mineralogy: Gedrite](https://www.handbookofmineralogy.org/pdfs/gedrite.pdf)."],"structure":{"bundles":[{"id":"gedrite-identity-boundaries","name":"Gedrite identity boundaries","description":"Establish what the gedrite name denotes for the material being assessed.","layers":[{"id":"nomenclature-and-registry","name":"Nomenclature and registry","description":"Connect the registered concept to a documented mineral determination.","findings":[{"id":"versioned-gedrite-assignment","name":"Versioned gedrite assignment","description":"Preserve the original label alongside the assessed identity and its naming authority.","questions":[{"text":"Which mineral nomenclature publication and version define gedrite for this determination?","id":"versioned-gedrite-assignment-q01","kind":"definition"},{"text":"Who assigned the specimen's original name, and what analytical evidence accompanied it?","id":"versioned-gedrite-assignment-q02","kind":"provenance"}]}]},{"id":"neighbouring-amphiboles","name":"Neighbouring amphiboles","description":"Test the alternatives most likely to change the mineral assignment.","findings":[{"id":"chemical-and-symmetry-boundaries","name":"Chemical and symmetry boundaries","description":"Treat anthophyllite, ferro-gedrite, and monoclinic amphiboles as explicit identification alternatives.","questions":[{"text":"Which measured compositional criteria separate this grain from anthophyllite and ferro-gedrite under the selected scheme?","id":"chemical-and-symmetry-boundaries-q01","kind":"boundary"},{"text":"What structural evidence excludes a monoclinic amphibole interpretation?","id":"chemical-and-symmetry-boundaries-q02","kind":"measurement"}]}]}]},{"id":"gedrite-composition-and-sites","name":"Gedrite composition and sites","description":"Record the grain chemistry and assumptions underlying a structural formula.","layers":[{"id":"spatially-resolved-chemistry","name":"Spatially resolved chemistry","description":"Keep analytical results attached to identifiable regions of individual grains.","findings":[{"id":"representative-grain-analysis","name":"Representative grain analysis","description":"Separate genuine compositional variation from beam overlap, inclusions, and analytical limitations.","questions":[{"text":"What are the measured Si, Al, Mg, Fe, Na, Ca, and other detected constituent concentrations, with totals and uncertainties?","id":"representative-grain-analysis-q01","kind":"measurement"},{"text":"Do analytical spots sample homogeneous gedrite, zoned regions, inclusions, or adjacent phases?","id":"representative-grain-analysis-q02","kind":"boundary"}]}]},{"id":"formula-and-site-allocation","name":"Formula and site allocation","description":"Expose the calculations connecting analytical chemistry to amphibole classification.","findings":[{"id":"auditable-formula-calculation","name":"Auditable formula calculation","description":"Record normalization, iron valence, aluminium allocation, and anion assumptions without presenting estimates as direct observations.","questions":[{"text":"Which normalization and site-allocation procedure converts the analysis to an amphibole formula?","id":"auditable-formula-calculation-q01","kind":"definition"},{"text":"Which Fe-valence and OH, F, or Cl quantities were measured, estimated, or left unconstrained?","id":"auditable-formula-calculation-q02","kind":"measurement"},{"text":"Would plausible alternative assumptions change the gedrite assignment?","id":"auditable-formula-calculation-q03","kind":"boundary"}]}]}]},{"id":"gedrite-structure-and-texture","name":"Gedrite structure and texture","description":"Link crystallographic identity to the observed mineral fabric.","layers":[{"id":"structural-confirmation","name":"Structural confirmation","description":"Assess whether diffraction and microscopy support the same phase identification.","findings":[{"id":"orthorhombic-phase-evidence","name":"Orthorhombic phase evidence","description":"Gedrite is reported as orthorhombic, with space group Pnma; use this as a reference to test specimen data. Reference: [Handbook of Mineralogy: Gedrite](https://www.handbookofmineralogy.org/pdfs/gedrite.pdf).","questions":[{"text":"Which indexed diffraction observations support an orthorhombic gedrite phase?","id":"orthorhombic-phase-evidence-q01","kind":"measurement"},{"text":"Are structural measurements linked to the chemically analysed grain or to a potentially mixed powder?","id":"orthorhombic-phase-evidence-q02","kind":"provenance"}]}]},{"id":"intergrowths-and-alteration","name":"Intergrowths and alteration","description":"Describe phase contacts, internal heterogeneity, and preservation of gedrite.","findings":[{"id":"gedrite-domain-integrity","name":"Gedrite domain integrity","description":"Distinguish intact gedrite domains from intergrown amphiboles and replacement products.","questions":[{"text":"What images or maps establish the size and continuity of compositionally distinct domains?","id":"gedrite-domain-integrity-q01","kind":"measurement"},{"text":"Which features support intergrowth, zoning, or replacement, and which interpretations remain unresolved?","id":"gedrite-domain-integrity-q02","kind":"boundary"},{"text":"Which grain region is suitable for a follow-up analysis that avoids mixed-phase results?","id":"gedrite-domain-integrity-q03","kind":"action"}]}]}]},{"id":"gedrite-specimen-and-use","name":"Gedrite specimen and use","description":"Connect geological context and material form to defensible sampling and handling decisions.","layers":[{"id":"occurrence-and-representativeness","name":"Occurrence and representativeness","description":"Retain the context needed to interpret the analysed material without modelling the entire host rock.","findings":[{"id":"sample-context-and-phase-fraction","name":"Sample context and phase fraction","description":"Record collection context, associated phases, and gedrite abundance separately from grain chemistry.","questions":[{"text":"What locality, host-rock observations, and collection history are documented for this specimen?","id":"sample-context-and-phase-fraction-q01","kind":"provenance"},{"text":"What fraction of the assessed material is gedrite, and how was that fraction determined?","id":"sample-context-and-phase-fraction-q02","kind":"measurement"},{"text":"Does the analysed grain represent the specimen or only a selected compositional domain?","id":"sample-context-and-phase-fraction-q03","kind":"boundary"}]}]},{"id":"morphology-and-preparation","name":"Morphology and preparation","description":"Assess actual particles and proposed preparation operations without assigning a hazard category from the mineral name alone.","findings":[{"id":"material-specific-handling-evidence","name":"Material-specific handling evidence","description":"Keep observed habit, measured particle geometry, and any applicable hazard determination distinct.","questions":[{"text":"What microscopy establishes the habit and dimensions of particles present in this material?","id":"material-specific-handling-evidence-q01","kind":"measurement"},{"text":"What sample-specific evidence and applicable requirements govern cutting, crushing, or powder preparation?","id":"material-specific-handling-evidence-q02","kind":"action"},{"text":"Does any supplied hazard classification apply to the analysed material and its physical form?","id":"material-specific-handling-evidence-q03","kind":"boundary"}]}]}]},{"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 gedrite this model covers, and on what evidence?","id":"evidence-confidence-notes-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 gedrite this model covers, and on what evidence?","id":"evidence-identifiers-q01","kind":"provenance"}]},{"id":"evidence-standards-and-regulation","name":"Standards and regulation","description":"Recalled without web access and unsourced; every item is a lead to verify.","questions":[{"text":"Which of these standards and regulation hold for the sense of gedrite this model covers, and on what evidence?","id":"evidence-standards-and-regulation-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 gedrite 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 gedrite 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 gedrite 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 gedrite this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Identify a specimen as gedrite from documented analysis and metamorphic setting.","Distinguish it from anthophyllite and other amphiboles using analytical data."],"mustNot":["Label an amphibole as gedrite without analysis.","Recommend grinding, cutting or breaking fibrous amphibole material without dust control.","Present a fibrous specimen as safe to handle without checking for asbestiform habit.","Invent or alter a specimen's locality."],"requiresHuman":["Working or crushing amphibole-bearing rock.","Collecting at sites that may be protected or privately owned."]},"ethics":{"considerations":["Some amphiboles occur as fibres that cause serious lung disease, so handling needs care.","Misidentified minerals mislead geological research."],"affectedParties":["Collectors and workers","Researchers","People near crushed rock"]},"owners":{"steward":"The collector or museum that holds the specimen.","roles":[],"masterSystems":["Museum mineral collection catalogues","Mineral species databases"]},"relations":[{"target":"Q26231488","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.gedrite","Wikidata: Q2252659 (https://www.wikidata.org/wiki/Q2252659)"]},"properties":{"applicability":"required","items":["Mineral identity determination: provisional | supported | disputed | rejected; nomenclature reference and date","Grain composition: oxide wt%; analytical totals, uncertainty, and spot locations","Calculated amphibole formula: atoms per formula unit; normalization basis and site-allocation assumptions","Iron oxidation-state constraint: measured | estimated | unconstrained; method and Fe2+/Fe3+ allocation","Crystal symmetry: orthorhombic supported | incompatible | unresolved","Gedrite phase fraction: mass% or volume%, explicitly distinguished; method and uncertainty","Grain morphology: bladed | prismatic | fibrous | mixed | unresolved; imaging evidence","Intergrowth and replacement relationships: associated phase, contact type, spatial scale, and linked image","Particle dimensions: length and width in µm; aspect ratio and measurement protocol"]},"recognition":{"applicability":"required","items":["Brown, grey or greenish prismatic or bladed crystals in metamorphic rocks.","Two cleavages typical of amphiboles.","Separation from related amphiboles needs chemical analysis."]},"capabilities":{"applicability":"required","items":["Assign or revise a gedrite identification using linked chemical and structural evidence.","Select homogeneous grain regions for analysis while avoiding intergrowths and replacement rims.","Compare compositions across grains and cores or rims to detect meaningful variability.","Estimate gedrite abundance and identify accompanying phases in a specimen.","Choose further diffraction, microanalysis, or particle imaging to resolve a specific uncertainty.","Assess whether a proposed preparation step requires additional morphology or exposure evidence."]},"hazards":{"applicability":"required","items":["Fibrous dust released from crushing or cutting.","Confusion with anthophyllite."]},"interfaces":{"applicability":"required","items":["Mineral nomenclature approved by the Commission on New Minerals, Nomenclature and Classification, International Mineralogical Association."]},"context":{"applicability":"required","items":["Gedrite is encountered in metamorphic rocks, geological collections and mineralogical laboratory samples.","Geologists study its composition and associated minerals to interpret metamorphic conditions and rock history.","Its identification supports geological mapping, petrographic description and research into amphibole mineral chemistry."]}},"sources":[{"title":"Wikidata item Q2252659: gedrite","url":"https://www.wikidata.org/wiki/Q2252659","note":"identity and sense of the item"},{"title":"Wikipedia: Gedrite","url":"https://en.wikipedia.org/wiki/Gedrite","note":"general description of the item"}],"openQuestions":["Which current authoritative amphibole nomenclature should govern this entry, and how should historical gedrite and magnesio-gedrite labels map to it?","What precise compositional and site-occupancy boundaries distinguish gedrite from anthophyllite, ferro-gedrite, and sodium-bearing neighbouring species under that scheme?","What minimum combination of chemistry and diffraction adequately resolves fine gedrite-bearing intergrowths?","Which physical-property ranges and thermal transformation data are supported for compositionally characterized gedrite rather than broadly labelled amphibole material?","Which chemical identifiers and material-specific hazard determinations, if any, demonstrably apply to gedrite rather than to a broader amphibole category?"],"resources":{"spec":"/models/things/publications/thing-q2252659/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q2252659/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T09:57:38Z","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 2026-10-07T10:10:28+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}