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Home › Blog › blog feldspar india aalok overseas › HS & HSN Codes For Feldspar, Quartz & Muscovite Mica — The Complete Import/Export Guide By Aalok Overseas India
Posted by Admin on May, 22, 2026
HS & HSN Codes for Feldspar, Quartz & Muscovite Mica — The Complete Import/Export Guide
From 4-digit Chapter headings to 10-digit national tariff lines — covering Potassium Feldspar, Sodium Feldspar, Quartz, and Muscovite Mica in all trade forms, with preferential duty concessions under AIFTA, SAFTA, and major FTAs.
Whether you are an exporter shipping Potassium Feldspar powder to a Korean ceramics plant, a buyer in Turkey importing Sodium Feldspar lumps from India, or a customs broker handling Muscovite Mica flakes for electronics markets in Japan — getting the HS code right is not optional. An incorrect classification can cost you the benefit of preferential duty rates under Free Trade Agreements, trigger customs holds, attract misdeclaration penalties, or result in full MFN duty assessments where a concessional rate was available. This guide maps every major classification scenario across all four minerals, explains the digit hierarchy from Chapter to national tariff line, and shows how preferential trade agreements change the real cost of crossing borders.
Understanding What You Are Classifying
All four minerals fall under HS Chapter 25 — Salt; Sulphur; Earths and Stone; Plastering Materials, Lime and Cement. This chapter covers natural mineral products in crude/raw forms. The critical classification principle is that the form of the material (crude lump, ground powder, washed grain, calcined) and its degree of processing determines whether it stays in Chapter 25 or advances to Chapter 28 (chemicals) or Chapter 68 (worked stone articles).
The HS Digit Hierarchy: 4 to 10 Digits Explained
The Harmonized System (HS) is a multilateral nomenclature administered by the World Customs Organization (WCO). Countries use it as the common foundation and add national digits on top.
Same globally
Same globally
WCO / same in most
National level
National / India only
| Digit Level | Digits | Authority | Example (Feldspar) | Used By |
|---|---|---|---|---|
| Chapter | 25 | WCO | Salt, Sulphur, Earths & Stone | All 200+ WCO members |
| Heading | 2529 | WCO | Feldspar, Leucite, Nepheline | All WCO members |
| Subheading | 252910 | WCO | Feldspar — specific type | All WCO members (6-digit treaty) |
| Tariff Item | 25291010 | National | Country-specific subclassification | Each country independently |
| Statistical Item | 2529101010 | National | India's 8+2 digit HSN | India, Australia, some EU nations |
Potassium Feldspar — HS & HSN Codes
Potassium Feldspar (K-Feldspar, KAlSi₃O₈) includes orthoclase, microcline, and sanidine varieties. India is the world's leading exporter of K-Feldspar, primarily to China, Korea, Italy, and Turkey. The mineral is traded in multiple physical forms, each of which may carry a distinct tariff line at the national level.
Global HS Classification
| HS Level | Code | Description | Form |
|---|---|---|---|
| Chapter | 25 | Salt; Sulphur; Earths and Stone; Plastering Materials, Lime and Cement | All forms |
| Heading | 2529 | Feldspar; Leucite; Nepheline and Nepheline Syenite; Fluorspar | All forms |
| HS6 Subheading | 252910 | Feldspar (all types including K-Feldspar and Na-Feldspar) | Crude, lumps, grains, powder |
| HS6 — Alternative | 252921 | Fluorspar, containing by weight ≤ 97% CaF₂ (not feldspar — for reference) | — |
India HSN Codes — Potassium Feldspar (By Form)
| HSN Code (India) | Form | Description | Typical Use |
|---|---|---|---|
| 25291010 | CRUDE/LUMPS | Potassium Feldspar in crude, lump or broken form, unwashed or rough-washed | Cement, raw processing |
| 25291020 | GRAINS | Potassium Feldspar crushed/graded — granules (typically 0.5–5 mm) | Glass batch, ceramics |
| 25291030 | POWDER | Potassium Feldspar ground/milled powder (mesh 150–400+) | Ceramics, sanitary ware, tiles, paints |
| 25291090 | OTHER | Potassium Feldspar — other forms (beneficiated, floated, acid-washed concentrates) | Specialty ceramics, high-purity glass |
Key Import Country Codes — Potassium Feldspar
| Country | Tariff Code | Digits | Form Covered | MFN Duty (Approx.) |
|---|---|---|---|---|
| 🇮🇳 India | 25291010 / 25291030 | 8-digit | Lumps / Powder | 5% BCD |
| 🇨🇳 China | 2529100090 | 10-digit | All forms | 3% |
| 🇰🇷 South Korea | 2529.10-0000 | 10-digit | All forms | 3% |
| 🇹🇷 Turkey | 2529.10.00.00.00 | 12-digit | All forms | 0% (EU-aligned) |
| 🇮🇹 Italy / EU | 2529 10 00 | 8-digit (CN) | All forms | 0% MFN |
| 🇯🇵 Japan | 2529.10-000 | 9-digit | All forms | Free (0%) |
| 🇺🇸 USA | 2529.10.0000 | 10-digit | All forms | Free (0%) |
| 🇲🇾 Malaysia | 2529 10 000 | 9-digit | All forms | 0% MFN |
| 🇦🇪 UAE | 2529.10.00 | 8-digit GCC | All forms | 5% GCC CET |
| 🇧🇷 Brazil | 2529.10.00 | 8-digit Mercosur | All forms | 0% NCM |
Sodium Feldspar (Albite) — HS & HSN Codes
Sodium Feldspar (Na-Feldspar, NaAlSi₃O₈), commercially known as albite or soda feldspar, is critically important to the flat glass, container glass, and high-temperature ceramics industries. It has a lower melting point than K-Feldspar, making it a preferred flux. At the HS6 level, K-Feldspar and Na-Feldspar share the same subheading (252910) under the WCO system, but many countries — including India — differentiate them at the 8-digit national tariff level.
India HSN Codes — Sodium Feldspar (By Form)
| HSN Code (India) | Form | Description | Industry Use |
|---|---|---|---|
| 25291011 | CRUDE/LUMPS | Sodium / Soda Feldspar in lump or crude form (some schedules use 25291010 for both K & Na) | Raw materials supply |
| 25291021 | GRAINS | Sodium Feldspar crushed/graded — granules (0.3–4 mm) | Float glass manufacturing |
| 25291031 | POWDER | Sodium Feldspar milled powder — mesh 100 to 400 | Ceramic glaze, wall tiles, glass frit |
| 25291091 | OTHER | Sodium Feldspar — beneficiated/floated concentrate, other forms | High-purity glass, specialty ceramics |
Key Import Country Codes — Sodium Feldspar
| Country | Tariff Code | Note on K vs Na Distinction | MFN Duty |
|---|---|---|---|
| 🇮🇳 India (import) | 25291011 / 25291031 | Separate sub-items for Na-Feldspar in some notifications | 5% BCD |
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