Analysis
Heading 2529 of the Harmonized Tariff Schedule covers feldspar; leucite, nepheline and nepheline syenite; fluorspar. It divides into 4 six-digit subheadings and 4 eight-digit tariff lines, with 5 ten-digit statistical suffixes below them.
Every one of its 4 tariff lines is duty-free at the general rate, so classification within the heading affects statistics and Chapter 99 measures rather than the base duty.
The largest subheadings are 2529.10 (unnamed, 1 line), 2529.21 (unnamed, 1 line), 2529.22 (unnamed, 1 line) and 2529.30 (unnamed, 1 line).
By Census's concordance, most of its statistical lines are made by Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying (21232) and Other Nonmetallic Mineral Mining and Quarrying (21239). Those are the NAICS industries a US producer of these goods would report under.
Its median rate of duty-free sits at the 46th percentile of the headings in chapter 25.
The heading text decides whether a product belongs here at all (General Rule of Interpretation 1); the subheadings and lines below it only apply once that is settled. Section and chapter notes can override the heading wording, so read them for borderline goods.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 2529.10.00 | Feldspar; leucite, nepheline and nepheline syenite; fluorspar: feldspar | Free |
| 2529.21.00 | Containing by weight 97 percent or less of calcium fluoride | Free |
| 2529.22.00 | Containing by weight more than 97 percent of calcium fluoride | Free |
| 2529.30.00 | Leucite; nepheline and nepheline syenite | Free |