{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.pascoite","code":"thing-q13115","url":"https://ver.cy/models/thing/q13115/","name":"pascoite","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":"Pascoite is a hydrated calcium decavanadate mineral with the formula Ca3[V10O28]·17H2O, typically occurring as orange secondary crystals or crusts in oxidized vanadium-bearing deposits.","purpose":"Enable an agent to recognise pascoite, assess its identification and preservation state, and choose justified examination, storage and handling actions.","scope":{"in":["Ideal composition and departures measured in individual specimens","Crystallographic and physical evidence supporting identification","Hydration, dissolution and alteration state","Natural occurrence, matrix associations and specimen provenance","Sampling, preservation and specimen-specific handling decisions"],"out":["The wider pascoite family and other vanadate mineral species","Host-rock classification and ore-deposit models","Industrial vanadium extraction and refining processes","Commercial mixtures containing calcium vanadates","Dissolved vanadium speciation after the mineral loses its solid identity"],"boundaries":[]},"distinguishingFeatures":["Check composition against Ca3[V10O28]·17H2O; calcium and vanadium alone do not establish the mineral species. Reference: [Handbook of Mineralogy](https://www.handbookofmineralogy.org/pdfs/Pascoite.pdf).","Require diffraction consistent with monoclinic pascoite, reported in space group C2/m, to distinguish chemically similar crystalline phases. Reference: [Handbook of Mineralogy](https://www.handbookofmineralogy.org/pdfs/Pascoite.pdf).","Use orange to red-orange colour, minute lathlike crystals or granular crusts, and hardness near 2.5 as supporting observations, never as a unique identification. Reference: [Handbook of Mineralogy](https://www.handbookofmineralogy.org/pdfs/Pascoite.pdf).","Treat dirty-yellow colour as a possible partial-dehydration indicator requiring corroboration; colour differences alone should not create a separate species assignment. Reference: [Handbook of Mineralogy](https://www.handbookofmineralogy.org/pdfs/Pascoite.pdf).","Account for reported water solubility when evaluating a crust or planning examination; do not use wet testing on the whole specimen. Reference: [Handbook of Mineralogy](https://www.handbookofmineralogy.org/pdfs/Pascoite.pdf)."],"structure":{"bundles":[{"id":"species-and-composition","name":"Species and composition","description":"Establish what material qualifies as pascoite and which compositional observations support that assignment.","layers":[{"id":"mineral-identity","name":"Mineral identity","description":"Connect the registry concept to a mineral species and an explicit reference composition.","findings":[{"id":"species-boundary","name":"Species boundary","description":"Keep pascoite distinct from a family name, a generic calcium vanadate and an unverified specimen label.","questions":[{"text":"Which mineralogical reference anchors the pascoite name and formula used for this identification?","id":"species-boundary-q01","kind":"definition"},{"text":"Does the attribution identify pascoite itself, a related mineral, or merely calcium-vanadate material?","id":"species-boundary-q02","kind":"boundary"}]}]},{"id":"specimen-chemistry","name":"Specimen chemistry","description":"Evaluate composition at the scale of the candidate phase.","findings":[{"id":"composition-and-admixture","name":"Composition and admixture","description":"Separate intrinsic chemical departures from contributions made by matrix and adjacent grains.","questions":[{"text":"What Ca:V ratio was measured, with what uncertainty and analytical spot size?","id":"composition-and-admixture-q01","kind":"measurement"},{"text":"Can additional elements be assigned to the pascoite phase rather than inclusions or matrix?","id":"composition-and-admixture-q02","kind":"boundary"},{"text":"Was water content measured independently or assumed from the species formula?","id":"composition-and-admixture-q03","kind":"measurement"}]}]}]},{"id":"diagnostic-evidence","name":"Diagnostic evidence","description":"Combine structural analysis and physical observations into a defensible identification.","layers":[{"id":"structural-confirmation","name":"Structural confirmation","description":"Evaluate diffraction evidence against an identified pascoite reference.","findings":[{"id":"diffraction-match","name":"Diffraction match","description":"Record the quality and limitations of a phase-level structural assignment.","questions":[{"text":"Which measured reflections support pascoite, and which reference pattern or structure was used?","id":"diffraction-match-q01","kind":"measurement"},{"text":"Are unexplained reflections attributable to other phases, alteration or an incorrect identification?","id":"diffraction-match-q02","kind":"boundary"},{"text":"Could sample preparation or measurement conditions have changed the hydrate before diffraction was collected?","id":"diffraction-match-q03","kind":"provenance"}]}]},{"id":"physical-screening","name":"Physical screening","description":"Use appearance and physical observations to guide analysis without overclaiming certainty.","findings":[{"id":"supporting-observations","name":"Supporting observations","description":"Distinguish observations on the candidate mineral from properties of its host specimen.","questions":[{"text":"What colour, habit, translucency and surface texture are observed on the candidate pascoite grains?","id":"supporting-observations-q01","kind":"measurement"},{"text":"Were any hardness or optical observations made on isolated grains or on the surrounding matrix?","id":"supporting-observations-q02","kind":"boundary"},{"text":"Which unresolved alternative identification requires structural or chemical testing?","id":"supporting-observations-q03","kind":"action"}]}]}]},{"id":"hydration-and-preservation","name":"Hydration and preservation","description":"Track environmental exposure and changes that affect the hydrate or remove material.","layers":[{"id":"hydration-history","name":"Hydration history","description":"Relate specimen condition to documented environmental and treatment history.","findings":[{"id":"water-loss-assessment","name":"Water-loss assessment","description":"Treat suspected dehydration as an evidence-dependent state assessment.","questions":[{"text":"What temperature, humidity, vacuum or heating exposures preceded the current observation?","id":"water-loss-assessment-q01","kind":"provenance"},{"text":"Do changes in colour, mass or diffraction support water loss rather than contamination or another alteration?","id":"water-loss-assessment-q02","kind":"measurement"},{"text":"Does the altered material still justify a pascoite identification, or should its present phase remain unresolved?","id":"water-loss-assessment-q03","kind":"boundary"}]}]},{"id":"contact-and-storage","name":"Contact and storage","description":"Assess water contact and preservation interventions against specimen-specific evidence.","findings":[{"id":"preservation-decision","name":"Preservation decision","description":"Choose handling and storage measures while retaining a record of their evidential basis.","questions":[{"text":"Has washing, condensation or another liquid exposure removed or redistributed the candidate mineral?","id":"preservation-decision-q01","kind":"provenance"},{"text":"Which storage conditions have preserved this specimen's observed state, and for how long?","id":"preservation-decision-q02","kind":"measurement"},{"text":"What evidence supports the proposed cleaning, mounting or storage intervention?","id":"preservation-decision-q03","kind":"action"}]}]}]},{"id":"occurrence-and-provenance","name":"Occurrence and provenance","description":"Connect the identified mineral to its geological setting and collection history.","layers":[{"id":"formation-context","name":"Formation context","description":"Examine the origin and relationships of pascoite-bearing deposits on a specimen.","findings":[{"id":"crust-origin","name":"Crust origin","description":"Distinguish field occurrence from subsequent growth or redistribution during storage.","questions":[{"text":"Was the candidate crust documented at collection, or first observed after storage or treatment?","id":"crust-origin-q01","kind":"provenance"},{"text":"What matrix and neighbouring phases are independently identified?","id":"crust-origin-q02","kind":"measurement"},{"text":"What evidence distinguishes natural deposition from post-collection crystallisation?","id":"crust-origin-q03","kind":"boundary"}]}]},{"id":"specimen-lineage","name":"Specimen lineage","description":"Maintain locality and subsampling links needed to interpret analytical results.","findings":[{"id":"locality-and-fragment-link","name":"Locality and fragment link","description":"Keep locality assertions and analytical fragments traceable to the parent specimen.","questions":[{"text":"Which collection record supports the stated mine, locality and collection date?","id":"locality-and-fragment-link-q01","kind":"provenance"},{"text":"Can every analysed fragment be traced to its position on the parent specimen?","id":"locality-and-fragment-link-q02","kind":"provenance"},{"text":"Does the analysed fragment justify identifying the whole crust as pascoite, or only the sampled region?","id":"locality-and-fragment-link-q03","kind":"boundary"}]}]}]},{"id":"examination-and-handling","name":"Examination and handling","description":"Turn identification confidence and specimen condition into justified examination and handling choices.","layers":[{"id":"analytical-intervention","name":"Analytical intervention","description":"Match each proposed analysis to an unresolved identification or preservation question.","findings":[{"id":"sampling-value","name":"Sampling value","description":"Assess whether the expected information warrants consuming or changing pascoite-bearing material.","questions":[{"text":"Which unresolved question requires material removal rather than examination in place?","id":"sampling-value-q01","kind":"action"},{"text":"What fragment size and location provide representative evidence while retaining identifiable material?","id":"sampling-value-q02","kind":"action"},{"text":"How will preparation-related changes be distinguished from the specimen's original state?","id":"sampling-value-q03","kind":"measurement"}]}]},{"id":"specimen-specific-controls","name":"Specimen-specific controls","description":"Base handling requirements on documented composition, physical form and the proposed operation.","findings":[{"id":"handling-basis","name":"Handling basis","description":"Avoid assigning unsupported hazard classes or transferring properties from associated minerals to pascoite.","questions":[{"text":"What authoritative handling information applies specifically to this material and its proposed use?","id":"handling-basis-q01","kind":"provenance"},{"text":"Do identified matrix constituents require controls beyond those justified for the pascoite phase?","id":"handling-basis-q02","kind":"boundary"},{"text":"Will the operation generate dust or solutions, and what documented controls govern those outputs?","id":"handling-basis-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 pascoite 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 pascoite 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 pascoite 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 pascoite 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 pascoite 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 pascoite this model covers, and on what evidence?","id":"evidence-neighbours-q01","kind":"provenance"}]}]}]}]},"agentConduct":{"may":["Describe pascoite and its vanadium chemistry from mineralogical sources.","Advise storage that protects specimens from dehydration and light, as published by curators."],"mustNot":["Advise handling it without gloves and hand washing, given its vanadium content.","Advise dissolving, grinding or ingesting it.","Help collect it in old mines without permission or safety measures."],"requiresHuman":["Entering or collecting in abandoned uranium-vanadium mines."]},"ethics":{"considerations":["Vanadium compounds are toxic, and its deposits often carry uranium.","Abandoned mines where it forms are dangerous to enter."],"affectedParties":["Collectors","Children who handle specimens","Mine landowners"]},"owners":{"steward":"The person or collection that holds a specimen; the landowner for material in place.","roles":[],"masterSystems":[]},"relations":[{"target":"Q16267576","type":"parent","note":"registry parent class"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.pascoite","Wikidata: Q13115 (https://www.wikidata.org/wiki/Q13115)"]},"properties":{"applicability":"required","items":["Ideal mineral composition: Ca3[V10O28]·17H2O, with V(V)","Measured calcium-to-vanadium ratio: Atomic ratio; ideal Ca:V = 3:10; report analytical uncertainty","Diffraction identification: Consistent with pascoite | inconsistent | ambiguous | unmeasured","Hydration condition: Consistent with reference hydrate | suspected water loss | transformed | unresolved","Pascoite phase fraction: Mass % where quantified; method and detection limits required","Storage environment: Temperature in °C, relative humidity in %, and exposure duration","Occurrence relationship: Pascoite-bearing crust or crystals linked to matrix, associated phases and collection locality","Identification confidence: Label-only | visually supported | analytically supported | conflicting"]},"recognition":{"applicability":"required","items":["Bright orange to red-orange crystals or crusts on mine walls or ore.","Water-soluble and often seen growing as efflorescence in old workings."]},"capabilities":{"applicability":"required","items":["Compare a candidate grain's composition and diffraction with pascoite reference evidence","Map pascoite-bearing crusts separately from their matrix and neighbouring phases","Monitor colour, texture and analytical changes alongside storage conditions","Select a minimal representative fragment for an authorised destructive analysis","Choose examination and storage actions that account for hydration uncertainty and water sensitivity","Revise a specimen attribution when new evidence contradicts its pascoite label"]},"hazards":{"applicability":"required","items":["Vanadium compounds are toxic if swallowed or inhaled.","Specimens dissolve or alter with moisture."]},"interfaces":{"applicability":"required","items":["The official mineral list maintained by the International Mineralogical Association's Commission on New Minerals, Nomenclature and Classification recognizes pascoite as a mineral species."]},"context":{"applicability":"required","items":["Pascoite is encountered as a secondary mineral in oxidized vanadium-bearing deposits and in mineralogical collections.","Its crystals and crusts are studied to understand vanadate mineral formation and hydrated mineral structures.","Collection records and examinations document its identity and preservation state because environmental exposure can alter hydrated specimens."]}},"sources":[{"title":"Wikidata item Q13115: pascoite","url":"https://www.wikidata.org/wiki/Q13115","note":"identity and sense of the item"},{"title":"Wikipedia: Pascoite","url":"https://en.wikipedia.org/wiki/Pascoite","note":"general description of the item"}],"openQuestions":["What temperature and relative-humidity ranges preserve pascoite over relevant storage durations, and what phases form outside those ranges?","Which related vanadate minerals are the most consequential identification alternatives, and which validated measurements discriminate them?","How much compositional substitution can pascoite accommodate before another species assignment is required?","Which CAS, PubChem or EC identifiers, if any, correspond exactly to pascoite rather than a generic calcium vanadate or another hydrate?","What pascoite-specific toxicological, exposure and disposal evidence exists, and where must handling decisions rely on broader evidence with explicit limitations?"],"resources":{"spec":"/models/things/publications/thing-q13115/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q13115/spec.json"],"providers":["Codex"],"researchStatus":"unreviewed","generatedAt":"2026-09-12T11:56:10Z","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}}