reported peaks (cm⁻¹): 223, 293, 410, 612, 1319

Polarised micro-Raman maps over a 200 µm × 200 µm area show that the 612 cm⁻¹ feature varies in intensity in a coherent spatial pattern with an apparent characteristic length of approximately 22 µm. The pattern reproduces on rotation of the specimen. No textural correlate is visible by SEM. The 612 cm⁻¹ wavenumber matches the unattributed band reported elsewhere in the registry. Re-pass note (2026-09-27). Re-pass on 2026-09-27 reproduces the 612 cm⁻¹ spatial pattern within experimental uncertainty; status remains unverified pending further characterisation.

Events recorded against this accession in the registry's printed custody book. Operator initials are anonymous. Storage codes follow the convention vault-shelf-drawer.

physical location: vault D · shelf 24 · drawer 09 · last documented inspection: 2020-07-07 14:54 UTC