diaboleite

Formula agreement

Record measured elemental proportions separately from ideal formula values and inferred hydroxyl content.

1. Does the analysed grain support Pb:Cu:Cl proportions near 2:1:2 within stated uncertainty? measurement
2. Which components, particularly hydrogen and hydroxyl, were measured directly and which were inferred? measurement

Alternative exclusion

Keep boleite, pseudoboleite, cumengeite and other plausible phases explicit until discriminating evidence resolves them.

1. Which chemical or structural observation distinguishes this grain from each remaining candidate? boundary
2. Does the diaboleite identification apply to one grain, an aggregate or the entire specimen? boundary

Diaboleite pattern match

Record the reference structure, measured pattern and unresolved reflections supporting or challenging the assignment.

1. Which published diaboleite structure or reference pattern was compared with the measurement? provenance
2. Can the reflections be indexed consistently as diaboleite, and which require another phase or remain unexplained? measurement

Observable diagnostic support

Distinguish observations on the candidate grain from effects of coatings, matrix and lighting.

1. What habit, colour, transparency and cleavage features are actually observable on the candidate grain? measurement
2. Which additional observation could reduce identification uncertainty without consuming or damaging the grain? action

Analytical volume ownership

Assess whether each measurement sampled diaboleite alone or a composite volume.

1. How do the analysed spot size and interaction depth compare with the diaboleite grain dimensions? measurement
2. Which inclusions, coatings or adjacent phases could contribute lead, copper or chlorine to this analysis? boundary

Representative sample selection

Relate phase fraction, grain variability and sample preparation to the proposed measurement.

1. What evidence establishes the diaboleite fraction and variability of the selected material? measurement
2. Can the required measurement use the intact grain, or does isolation or powdering require sacrificing documented specimen features? action

Formation context evidence

Record whether natural mineralization, anthropogenic substrate or laboratory production is evidenced.

1. What field, collection or production record establishes the specimen's origin? provenance
2. Is the origin documented as natural, slag-derived or synthetic, or does it remain unresolved? boundary

Growth and replacement relations

Separate simple coexistence from evidence of growth sequence or replacement.

1. Which identified phases touch, enclose, underlie or coat the candidate diaboleite? measurement
2. What textures support an inferred growth or replacement sequence, rather than merely an association? provenance

Surface change assessment

Record observed changes and treatment history before attributing them to mineral instability.

1. Have cracking, colour change, new coatings or loss of material occurred since a documented baseline? measurement
2. What evidence supports compatibility of a proposed cleaning liquid, adhesive or thermal treatment with this diaboleite specimen? action

Operation-specific constraints

Distinguish intact display material from powder, analytical residue or solution, and retain the basis for any assigned restrictions.

1. Will the proposed operation generate particles, detached fragments or dissolved material, and what documented controls apply? action
2. Which verified chemical identity, safety assessment and jurisdiction support any assigned classification or disposal requirement? provenance

Check these first

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these check these first hold for the sense of diaboleite this model covers, and on what evidence? provenance

Identifiers and schemes

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these identifiers and schemes hold for the sense of diaboleite this model covers, and on what evidence? provenance

Standards and regulation

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these standards and regulation hold for the sense of diaboleite this model covers, and on what evidence? provenance

Real-world use

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these real-world use hold for the sense of diaboleite this model covers, and on what evidence? provenance

Typical measurements

Recalled without web access and unsourced; every item is a lead to verify.

1. Which of these typical measurements hold for the sense of diaboleite 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.

1. Which of these failure modes and hazards hold for the sense of diaboleite 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.

1. Which of these neighbouring kinds and how to tell them apart hold for the sense of diaboleite this model covers, and on what evidence? provenance