Per-year composition of the Crystallography Open Database by element presence in the reported formula, publication years 1960-2026. Queried from the COD REST API (crystallography.net/cod/result, format=count) on 2026-08-09 UTC. Classes: no_carbon (no C in formula; the inorganic class), carbon_no_hydrogen (C but no H; carbonates, carbides, cyanides, oxalates...), carbon_and_hydrogen (C and H; organic, organometallic, MOF-like). Shares are of all COD entries with that publication year. Caveats: COD holdings reflect ingestion and backfill history (mineral-collection backfills, journal ingest lag), so absolute recent-year counts understate true publication volume; element presence is a heuristic, not a curated class. 2026 is a partial year.
| Column | Range | Mean | Filled |
|---|---|---|---|
| year | 1,960–2,026 | 1,993 | 100% |
| total_entries | 246–27,656 | 7,809 | 100% |
| no_carbon | 217–2,949 | 1,007 | 100% |
| carbon_no_hydrogen | 3–274 | 69.9 | 100% |
| carbon_and_hydrogen | 3–25,932 | 6,732 | 100% |
| no_carbon_share | 0.0286–0.9684 | 0.5279 | 100% |
| ch_share | 0.0046–0.9624 | 0.4547 | 100% |
| partial_year | 0–1 | 0.01493 | 100% |