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Dzhalindite mineral

Dzhalindite is the indium hydroxide mineral species In(OH)3, listed as approved in the September 2026 IMA-CNMNC list with the special-procedure year 1967. It is distinct from elemental indium, indite (FeIn2S4), mixed ores and synthetic indium hydroxide products considered only by formula. Kiseleva and colleagues (2008) report a natural occurrence in one quartz-sulfide vein section from 50 metres below the surface at the Bugdaya deposit, eastern Transbaikalia, Russia. They describe 30-94 micrometre crystals in late quartz and zoned In-bearing grains examined by optical microscopy, backscattered-electron imaging and energy-dispersive elemental analysis. Their dzhalindite assignment rests on composition, optical properties and apparent crystal symmetry; X-ray diffraction was unsuccessful because the segregations were too small. Observed Fe zoning does not establish iron speciation or prove substitution within the mineral lattice. The suggested hypogene origin and precipitation from fluids that corroded sphalerite are interpretations, not demonstrated reaction pathways. Temperatures inferred from other phases or analogous veins are not direct measurements on these crystals. This particular occurrence does not establish a universal origin, a bulk resource grade, or an extraction yield. No microbial mechanism, industrial recovery or constituent-derived criticality is assigned.

Sources & References

  1. ima_2026_09: IMA-CNMNC. The New IMA List of Minerals, September 2026; PDF page 1 field definitions and page 60 Dzhalindite row: In(OH)3, A, 1967 s.p., Russia. The special-procedure year is not treated as a unique species accession.
    https://cnmnc.units.it/files/editor/IMA_Master_List_(2026-09).pdf (accessed 2026-10-12)
  2. kiseleva2008: Kiseleva GD, Kovalenker VA, Trubkin NV, Borisovsky SE and Mokhov AV (2008). Rare minerals of In, Cd, Mo, and W in gold-base metal veins of the Bugdaya Au-Mo(W)-porphyry deposit, eastern Transbaikalia, Russia. New Data on Minerals 43, 13-22. Complete original ten-page paper inspected: sampled section on page 14; original Figures 1-2 on page 15; identification and failed diffraction on page 16; EDS, zoning and indirect temperature arguments on pages 17-18; formation hypotheses on page 21. Other mineral arms remain separate.
    https://fmm.ru/images/9/94/NDM_2008_43_Kiseleva_eng.pdf (accessed 2026-10-12)
  3. handbook_dzhalindite: Handbook of Mineralogy. Dzhalindite, version 1, copyright 2001-2005 Mineral Data Publishing. Complete one-page entry inspected; mineral formula and historical occurrence context, with explicitly synthetic density and space-group information kept separate from natural-specimen measurements.
    https://handbookofmineralogy.org/pdfs/dzhalindite.pdf (accessed 2026-10-12)

Curation History

Timestamp Curator Action Summary
2026-10-12T05:23:39Z codex (GPT-6; codex) create Added the distinct mineral identity and qualified natural-specimen context from current IMA authority and a complete original study; retained failed diffraction, unresolved iron speciation and inferred formation conditions without a microbial mechanism or inherited criticality designation.

Record source: data/records/dzhalindite.yaml