metatorbernite
Enable an agent to identify metatorbernite, assess its hydration and specimen condition, and select justified actions for characterization, preservation and handling.
Bundle → Layer → Finding → Questions Filled
5 bundles · 9 layers · 14 findings · 25 questions
Mineral identity Establish whether the material belongs to the metatorbernite mineral species.
Composition boundaries
Relate measured chemistry to the ideal copper uranyl phosphate composition.
End member and substitutions
Keep ideal composition separate from measured substitutions and contributions from adjacent minerals.
- Does analysis of the identified crystal support Cu:U:P ratios compatible with metatorbernite? measurement
- What phosphorus-arsenic composition and authoritative naming criterion distinguish this material from metazeunerite-related compositions? boundary
Structural identification
Assess phase-specific evidence independently of color and historical labels.
Reference phase match
Require a traceable comparison with an appropriate metatorbernite structural reference.
- Which measured reflections or other validated structural observations support metatorbernite over torbernite? measurement
- Which reference dataset was used, and does it represent the same hydration and measurement conditions? provenance
Hydration and transformation Represent the hydrated phase and the specimen history that may have changed it.
Present hydration
Separate structural water evidence from surface moisture and mixed-phase signals.
Octahydrate evidence
Treat water content and crystal structure as complementary evidence rather than interchangeable labels.
- What evidence supports the octahydrate assignment for the specimen in its current state? measurement
- Could measured water loss include adsorbed moisture, host minerals or multiple hydrated phases? boundary
Alteration history
Track transformations associated with collection, storage and analytical preparation.
Phase-change events
Record demonstrated and suspected changes without assigning universal transition conditions.
- What evidence shows whether the specimen formed as metatorbernite or changed from a previously more hydrated phase? provenance
- Have heating, drying, vacuum exposure or humidity changes been followed by a measured change in phase? measurement
- Which proposed analytical conditions need evaluation for their potential to change the hydration state? action
Specimen context and characterization Connect phase identification to the particular crystals, matrix and evidence being assessed.
Mineral in matrix
Locate the metatorbernite-bearing portion and preserve its relationship to associated material.
Phase distribution
Define which grains, coatings or aggregates the mineral assignment actually covers.
- Which crystals or regions have been identified as metatorbernite, and what proportion of the specimen do they represent? measurement
- Do chemistry, diffraction and radiological observations refer to the same region or to different portions of the specimen? boundary
Evidence and sampling
Choose and interpret characterization in relation to specimen integrity.
Diagnostic value and impact
Connect each observation to the uncertainty it resolves and any material change it introduces.
- Is the identification based on appearance, an inherited label, chemical analysis or phase-specific measurement? provenance
- Which least-altering measurement can resolve the remaining distinction from torbernite or an arsenate-bearing alternative? action
- What material was removed or changed during preparation, and is a representative reference portion retained? provenance
Uranium-bearing specimen stewardship Connect the specimen's measured radiological and physical condition to permitted handling and preservation.
Exposure and contamination evidence
Distinguish measured radiation fields, activity and transferable material.
Specimen-specific assessment
Keep measurement conditions and unresolved exposure pathways attached to every assessment.
- What radiological measurements exist for this specimen, with instrument calibration, distance, background and uncertainty? measurement
- Are loose flakes, dust or removable contamination present, and how was their extent assessed? measurement
Preservation and disposition
Translate specimen condition into supported storage, examination and transfer decisions.
Action constraints
Record applicable requirements and preservation evidence without inventing universal exemptions or storage setpoints.
- Which containment and environmental conditions are supported for preserving this specimen while managing loose material? action
- Which current institutional and jurisdictional requirements apply to the proposed possession, sampling, transport or disposal action? action
- What measurements or specialist determinations remain necessary before that action can be decided? boundary
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of metatorbernite this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of metatorbernite this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of metatorbernite this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these typical measurements hold for the sense of metatorbernite this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of metatorbernite this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of metatorbernite this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
What it is Filled
Metatorbernite is a radioactive secondary copper uranyl phosphate mineral with ideal formula Cu(UO2)2(PO4)2·8H2O, distinguished from torbernite by its lower hydration state.
In scope
- Hydrated copper uranyl phosphate identity and departures from ideal composition
- Distinction from torbernite, metazeunerite and mixed mineral specimens
- Crystal structure, hydration state and evidence of transformation
- Specimen provenance, phase abundance and analytical confidence
- Radiological measurements, contamination condition and preservation constraints
Out of scope
- Torbernite and other related minerals as independently modeled species
- The complete host rock, uranium deposit or mining operation
- Uranium extraction, refining and nuclear fuel production processes
- Containers, radiation instruments and laboratory equipment as devices
- Jurisdiction-wide radiation protection and transport rules as standalone regulatory models
Why it exists Filled
Enable an agent to identify metatorbernite, assess its hydration and specimen condition, and select justified actions for characterization, preservation and handling.
Distinguishing features Filled
- Check compatibility with the ideal formula Cu(UO2)2(PO4)2·8H2O; elemental agreement alone does not establish the mineral phase. Reference: [CSIRO metatorbernite record](https://spectroscopy.csiro.au/material/Metatorbernite).
- Distinguish metatorbernite from torbernite using hydration-sensitive structural evidence: their ideal formulas contain eight and twelve waters respectively, so a copper-uranium-phosphorus analysis alone cannot separate them. References: [PubChem metatorbernite](https://pubchem.ncbi.nlm.nih.gov/compound/Metatorbernite), [PubChem torbernite](https://pubchem.ncbi.nlm.nih.gov/compound/Torbernite).
- Check diffraction against a metatorbernite reference structure; CSIRO records tetragonal symmetry and space group P4/n, but tetragonal symmetry by itself is not diagnostic. Reference: [CSIRO metatorbernite record](https://spectroscopy.csiro.au/material/Metatorbernite).
- Measure phosphorus and arsenic to distinguish phosphate-dominant material from metazeunerite-related compositions; intermediate compositions require explicit treatment of substitution. Reference: [Experimental study of the metatorbernite-metazeunerite system](https://pmc.ncbi.nlm.nih.gov/articles/PMC6501896/).
- Treat green tabular or scaly appearance as a screening observation, not a distinction from torbernite: the mineral identification key groups their visual characteristics together. Reference: [Mineralogical Society of America identification key](https://msaweb.org/msa/Collectors_Corner/id/mineral_id_keytiia.htm).
What robots and AI may and may not do Filled
Must not
- Advise storing or displaying it in living or sleeping areas or within reach of children.
- Advise cutting, grinding or crushing it where dust can be inhaled.
- Help ship it without the packaging and declarations its activity requires.
- Sell it without disclosing that it is radioactive.
Only with a human decision
- Disposing of radioactive specimens or collections.
- Moving a specimen across borders.
May
- Describe metatorbernite and its radioactivity from mineralogical and radiation safety sources.
- Measure and record the dose rate of a specimen with suitable instruments.
Moral aspects Filled
- It exposes holders and bystanders to radiation and radon decay products.
- Buyers who are not told of the hazard cannot protect their families.
Who is affected
- Collectors and households
- Children
- Postal and transport workers
Owners Filled
Steward
The person or collection that holds a specimen; radiation protection authorities regulate it.
Links to other meta-models Filled
parent
- Q3777564 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.metatorbernite
- Wikidata: Q946311 (https://www.wikidata.org/wiki/Q946311)
Direct properties required Filled
- Composition relative to the ideal end member: Atomic ratios Cu:U:P relative to 1:2:2; analytical uncertainty and method
- Phosphate-arsenate substitution: Molar As/(P+As), with detection limits
- Hydration state: Consistent with octahydrate; more hydrated phase suspected; further dehydrated; mixed; unresolved
- Crystal phase assignment: Metatorbernite confirmed; provisional; mixed phases; rejected; unresolved
- Diffraction and unit-cell evidence: d-spacings and cell lengths in Å; angles in degrees; reference and fit quality
- Metatorbernite abundance: Mass fraction or estimated abundance class, with method and uncertainty
- Thermal and humidity history: Linked observations of temperature in °C, relative humidity in %, duration and preparation events
- Surface integrity: Coherent crystals; loose flakes; powdering; detached material; unassessed
- Radiological condition: Activity in Bq or Bq/g; dose rate in µSv/h; removable contamination in Bq/cm² where measured; instrument, geometry and uncertainty
- Identity confidence and provenance: Links to specimen identifier, locality, collection history, analyses and prior labels
Recognition required Filled
- Green, square tabular crystals, often on rock matrix.
- Looks like torbernite; a radiation meter and analysis are needed to tell them apart.
Capabilities and actions required Filled
- Evaluate a metatorbernite identification against composition, diffraction and hydration evidence.
- Request targeted analysis to separate torbernite, arsenate substitution or mixed-phase alternatives.
- Compare observations over time to detect hydration changes or crystal deterioration.
- Select characterization methods after assessing their potential to alter the hydrated mineral.
- Determine which handling, storage or transfer decisions require specimen-specific measurements and applicable authority.
- Record a provisional identification with explicit unresolved evidence.
Hazards and failure modes required Filled
- Emits ionizing radiation and releases radon.
- Fragments and dust are dangerous if inhaled or swallowed.
Standards and interfaces required Filled
- IAEA Safety Standards SSR-6, Regulations for the Safe Transport of Radioactive Material, International Atomic Energy Agency.
Context of use required Filled
- Metatorbernite occurs as a secondary mineral in the oxidized zones of uranium-bearing deposits.
- It is encountered in mineral collections and geological investigations of uranium mineralization and weathering.
- Characterization considers hydration state because its distinction from related minerals depends partly on water content.
Sources Filled
- Wikidata item Q946311: metatorbernite - identity and sense of the item
- Wikipedia: Metatorbernite - general description of the item
Open questions
- Which authoritative nomenclature criteria govern phosphate-arsenate intermediates and significant copper-site deviations from ideal metatorbernite?
- What temperature, humidity and exposure-duration ranges preserve the relevant specimen, and how reversible are its observed hydration changes?
- Which reference diffraction or spectroscopic datasets best distinguish metatorbernite, residual torbernite and further dehydration products under the intended measurement conditions?
- Which chemical identifiers and hazard classifications explicitly cover this mineral species rather than a generic uranium compound or commercial mixture?
- What specimen-specific activity, contamination and environmental-release evidence is needed for the intended use and jurisdiction?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q946311/spec.json