U.S. imports of Crude Mica and Mica Splittings (HS 252510) totaled $89K in August 2026, imported from 4 countries.
Importers of Crude Mica and Mica Splittings paid $9K in duties in August 2026, an average duty rate of 9.97% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Crude Mica and Mica Splittings imports of $89K in August 2026 ran 28% above the year-to-date monthly average of $70K.
Last updated: August 2026 dataCrude mica and mica rifted into sheets or splittings — the minimally processed forms of muscovite, phlogopite, and related minerals — serve as critical inputs for electrical insulation, electronics, cosmetics, and specialty coatings, where the mineral's natural cleavage into thin, flexible sheets is the defining commercial property. India is the dominant global supplier and leads US imports under this heading, with Japan and Brazil also contributing. The US tariff schedule subdivides this heading into split block mica (2525100010), mica splittings (2525100020), and other crude mica (2525100050), with the appropriate line determined by the degree of splitting and physical form.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4 import shipments a month
Split block mica (2525100010) refers to blocks that have been cleaved but retain substantial thickness; mica splittings (2525100020) are very thin laminae produced by further hand- or machine-splitting, used in built-up mica insulation products; other crude mica (2525100050) covers unrifted or minimally processed mica not meeting the prior definitions. The physical form and thickness of the product, supported by supplier specification sheets, determines the correct 10-digit line.
Electrical and electronics manufacturers use mica splittings for capacitor dielectrics, motor commutator segments, and high-temperature insulation boards. Cosmetics producers use fine mica for pearlescent pigments, though that application typically uses ground mica (heading 2525.20) rather than crude forms. Specialty coatings and plastics compounders also consume crude mica as a functional filler for barrier and thermal properties.
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Subheading 2 of 3 in heading 2525
Subheading 252510 · $89K of $1.2M
ImportsExports
Imports
$89KYoY · free account
Exports
$3KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $842K of Crude Mica and Mica Splittings.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · exports 7 of 12 months reported. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2525100020 | Mica Splittings | $71K | 12.50% | 100.00% | $9K |
| 2525100050 | Mica, NESOI | $18K | 0.00% | 0.00% | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2525100000 | Crude Mica and Mica Rifted Into Sheets or Splttngs | $3K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
Brazil and Japan together supply 100% of it. Brazil pays 12.5% duty; Japan 0.0%.
customs district
destination
entry
rate provision · imports
20.2% enters free of duty; duty collected equals 9.97% of imports for consumption.