Feldspar commodity commodity Critical Material
Feldspar traded as an industrial raw material, including mined and beneficiated material ground for glassmaking, ceramics and fillers. The constituent feldspars are aluminosilicate minerals containing potassium, sodium or calcium; this commodity is distinct from the feldspar mineral group and its individual species. The shared USGS chapter does not make nepheline syenite part of this record: it reports feldspar and nepheline syenite separately. The original EU 2024 Annex II(k) designation is mapped to industrial feldspar. Potassium release from an experimental feldspar powder does not establish manufacture of a commercial feldspar product or potash. No microbial mechanism is asserted.
Criticality Designations
| Jurisdiction | List Name | Edition / Document | Classification | Source |
|---|---|---|---|---|
| European Union | Regulation (EU) 2024/1252, Annex II critical raw materials | Original act, 11 April 2024; OJ 3 May 2024 | critical |
eu2024-original
|
Sources & References
-
usgs-feldspar-identity: USGS Scientific Investigations Report 2017-5118, Feldspar discussion: aluminosilicate mineral scope and commodity uses
https://pubs.usgs.gov/sir/2017/5118/elements/Feldspar/Fldspr_txt.html (accessed 2026-10-11) -
usgs-mcs2026: USGS Mineral Commodity Summaries 2026, Feldspar and Nepheline Syenite, printed pp. 78-79 (PDF pp. 82-83): separately reported commercial products
https://pubs.usgs.gov/periodicals/mcs2026/mcs2026.pdf (accessed 2026-10-11) -
eu2024-original: Regulation (EU) 2024/1252, original act of 11 April 2024, OJ 3 May 2024: recital 8 and Annex II, Section 1
https://eur-lex.europa.eu/eli/reg/2024/1252/oj/eng (accessed 2026-10-11)
Curation History
| Timestamp | Curator | Action | Summary |
|---|---|---|---|
2026-10-11T08:29:04Z |
codex (GPT-6; codex) | CREATE | Created the feldspar commodity record with verified industrial scope and dated criticality; deferred microbial leads lacking the required commodity mapping or full evidence. |
Record source: data/records/feldspar.yaml