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HSChapter 25
U.S. imports of feldspar (HS 252910) totaled $497K in April 2026, traded with 7 countries.
Importers of Feldspar paid $37K in duties in April 2026 — an effective duty rate of 10% on $371K in dutiable value, based on actual customs collections rather than the published tariff schedule. Feldspar imports of $497K in April 2026 ran 59% above the year-to-date monthly average of $312K.
Last updated: April 2026 dataFeldspar is the most abundant group of rock-forming minerals and a foundational raw material for glass and ceramic manufacturing, classified under a single 10-digit line (2529100000). Turkey leads US imports of feldspar, reflecting the country's extensive deposits and established export infrastructure, with Spain and Mexico also notable suppliers. Importers should note that feldspar's alumina and alkali content — which varies by mineral type (orthoclase, albite, anorthite) — is a key commercial specification that affects suitability for glass batch versus ceramic body applications.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Feldspar originating in Mexico and meeting USMCA rules of origin qualifies for preferential tariff treatment under the United States-Mexico-Canada Agreement. Importers must obtain a valid USMCA certification of origin from the Mexican supplier and retain it for at least five years to support the preference claim.
Glass manufacturers typically require feldspar with tightly controlled iron oxide (Fe₂O₃) content — often below 0.1% — to avoid discoloration in the melt, while ceramic producers focus on alumina (Al₂O₃) and alkali (K₂O/Na₂O) ratios that influence firing temperature and glaze development. Commercial contracts and import documentation should specify these chemical parameters to avoid disputes at delivery.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2529100000 | FELDSPAR | $497K | 10.00% | $37K |
FELDSPAR
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2529100000 | FELDSPAR | $152K |
FELDSPAR
326 t
PORTLAND CEMENT EXCEPT WHITE PORTLAND CEMENT
HS 252329
SULFUR OF ALL KINDS, NOT SUBLIMED,PRECIP,COLLOIDAL
HS 250300
SALT INCL TBL/DENTRD, PURE SODM CHLOR ETC; SEA WTR
HS 250100
UNGRND NAT CAL PHSPH, ALUM CAL PHOS A PHOS CHALK
HS 251010
FLUORSPAR OV 97% OF CALCIUM FLUORD BY WGHT
HS 252922
PEBBLES, GRAVEL ETC. FOR CONCRETE AGGREGATES ETC.
HS 251710
| State | Imports | Exports | Balance |
|---|---|---|---|
| Tennessee | $298K | -- | -$298K |
| North Carolina | -- | $125K | +$125K |
| Wisconsin | $113K | -- | -$113K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAVANNAH, GA | $285K | -- | -$285K |
| EAGLE PASS, TX | $113K | -- | -$113K |
| CHARLESTON, SC | -- | $108K | +$108K |