corkite

Formula correspondence

Record how measured constituents and charge balance support assignment to corkite.

1. Does the analysed grain support the lead, ferric iron, phosphate, sulfate and hydroxyl inventory of ideal corkite? measurement
2. Which oxidation states, hydroxyl contents or site occupancies were measured, and which were assumed during normalization? provenance

Neighbouring species test

Make the decision rule for retaining or rejecting the corkite name explicit.

1. What accepted nomenclature rule separates this composition from beudantite and other related phases? boundary
2. Could the measured phosphate and sulfate arise from adjacent phases rather than one corkite grain? measurement

Pattern attribution

Determine which diffraction signals can be attributed to the candidate corkite phase.

1. Which measured reflections match a documented corkite reference, and which remain unexplained? measurement
2. Which reference pattern or structure refinement was used, and does it fit this sample's composition and resolution? provenance

Co-located observations

Link appearance and physical measurements to the same grain examined chemically.

1. Were habit, colour and any optical measurements recorded on the same grain as the chemical or diffraction analysis? provenance
2. Would an additional non-destructive observation resolve the ambiguity before hardness testing or powder sampling? action

Analytical volume isolation

Check whether the measurement volume isolates the phase being named.

1. How do grain size and crust thickness compare with probe interaction depth or sampling volume? measurement
2. What fraction of the analysed material is corkite, and what method distinguishes its contribution from the matrix? measurement

Substitution versus intergrowth

Distinguish compositional variation within corkite from unresolved mineral mixtures.

1. Do repeated spot analyses or maps reveal systematic variations in P, S, As, Cu, Pb or Fe? measurement
2. What evidence assigns those variations to lattice substitution rather than inclusions, surface material or analytical overlap? boundary

Locality and paragenesis

Separate documented collection context from inferred mineral formation history.

1. What collection record establishes the locality and exact host material of this corkite occurrence? provenance
2. Which contacts, overgrowths or replacement textures constrain when corkite formed relative to associated phases? measurement

Alteration evidence

Require measured evidence for stability or transformation claims.

1. Under what recorded pH, temperature, exposure duration and solution composition was dissolution or phase change tested? measurement
2. Does the evidence distinguish loss of corkite from substrate alteration, surface cleaning or formation of a new phase? boundary

Intervention suitability

Specify the material affected and the evidence supporting the proposed preparation.

1. How much identified corkite would sampling remove, and would a representative documented portion remain? action
2. What evidence supports compatibility of the proposed cleaning agent, adhesive or preparation method with both corkite and its matrix? action

Release and classification evidence

Identify the evidence needed before assigning handling or disposal requirements to the actual material.

1. What sample-specific evidence quantifies lead release and any arsenic contribution under conditions relevant to the proposed operation? measurement
2. Which applicable classification or handling source explicitly covers this specimen, powder or mixture rather than a different lead compound? 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 corkite 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 corkite 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 corkite 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 corkite 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 corkite 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 corkite this model covers, and on what evidence? provenance