Chapter 2524 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 25.24
Blue Crocidolite Asbestos Rough
Rough crocidolite asbestos in its natural rock matrix, with characteristic blue fibers visible and no fiber separation or processing beyond extraction. This crude form falls squarely under tariff item 2524.10.00, which covers crocidolite (blue asbestos) in its natural state.
2524.10.00Crocidolite Asbestos Fiber Bundles
Bundles of separated crocidolite asbestos fibers extracted from ore, retaining natural blue coloration and fibrous structure without further processing. These fiber bundles are still considered crude crocidolite under tariff item 2524.10.00, as extraction does not alter the product's essential character.
2524.10.00Industrial Crocidolite Asbestos Rock
Large pieces of crocidolite-bearing rock intended for industrial crushing and fiber extraction, with visible blue asbestos veins. This raw rock material is in its crude state and falls under tariff item 2524.10.00, which covers crocidolite without requiring prior separation of fibers.
2524.10.00Mining Grade Crocidolite Concentrate
Concentrated crocidolite asbestos from mining operations, with high blue fiber content and minimal gangue material. The concentration process, typically involving mechanical methods like flotation or magnetic separation, does not alter the crocidolite's structure, so it remains classifiable under tariff item 2524.10.00.
2524.10.00Raw Crocidolite Asbestos Ore
Natural crocidolite asbestos ore extracted from deposits, consisting primarily of blue riebeckite asbestos fibers in their raw, unprocessed form. This ore is in its crude state and is specifically named in tariff item 2524.10.00 as crocidolite, making it classifiable under this heading.
2524.90.00Actinolite Asbestos Raw Fiber
Actinolite asbestos raw fiber consists of green amphibole fibers extracted from metamorphic rock deposits, presented in raw unprocessed bundles. This product is in a crude state, having undergone only mechanical separation, and is not subjected to any processing beyond that permitted by Chapter 25 Note 1. It is classified under tariff item 2524.90.00 as 'other asbestos' since it is not a more specifically named type.
2524.90.00Amosite Asbestos Fibers
Amosite asbestos fibers are loose fibrous amosite asbestos separated from ore, with fiber lengths typically 1-5 cm, suitable for industrial blending. The product has undergone mechanical separation but is not further processed, remaining in a crude state. It is classified under tariff item 2524.90.00 as 'other asbestos' since amosite is not separately named in the tariff.
2524.90.00Amosite Asbestos Mine Concentrate
Amosite asbestos mine concentrate is concentrated amosite fibers from ore dressing processes, containing 70-90% amphibole content without chemical treatment. This intermediate crude form has undergone mechanical concentration (e.g., flotation or magnetic separation) which is permitted under Chapter 25 Note 1. It is classified under tariff item 2524.90.00 as 'other asbestos'.
2524.90.00Amosite Asbestos Ore
Amosite asbestos ore is a raw mineral ore containing long, coarse brown fibers of the amphibole mineral grunerite, sourced from mining operations. The product is in its natural state, not milled or processed beyond extraction, and is therefore classifiable as crude asbestos. It falls under tariff item 2524.90.00 as 'other asbestos' since amosite is not separately named in the tariff.
2524.90.00Amosite Asbestos Rock Fines
Amosite asbestos rock fines are crushed amosite-bearing rock containing amphibole fibers, with particle size under 2 mm, from mining operations. The product has undergone crushing and screening, which are mechanical processes permitted under Chapter 25 Note 1. It is classified under tariff item 2524.90.00 as 'other asbestos' since amosite is not specifically named.
2524.90.00Anthophyllite Asbestos Mineral
Anthophyllite asbestos mineral is a gray-brown amphibole asbestos occurring as cleavage fragments in raw ore, typically from deposits in Finland or the USA. The product is in a crude state, having undergone only mechanical extraction without further processing. It is classified under tariff item 2524.90.00 as 'other asbestos' because anthophyllite is not specifically named in the tariff schedule.
2524.90.00Chrysotile Asbestos-Bearing Serpentine Rock
Chrysotile asbestos-bearing serpentine rock is natural serpentine rock containing embedded chrysotile asbestos fibers in crude, unseparated state from mining operations. The product is in its crude state, not processed beyond extraction, and is classifiable under tariff item 2524.90.00 as 'other asbestos'. It is not specifically named in the tariff.
2524.90.00Chrysotile Asbestos Fiber
Chrysotile asbestos fiber is a naturally occurring serpentine mineral fiber extracted from deposits in regions like Quebec or Russia. This raw fiber material is in a crude state, not milled or processed beyond initial extraction, and is classifiable under tariff item 2524.90.00 as 'other asbestos'. It is the most common form of asbestos and is not separately named in the tariff.
2524.90.00Crocidolite Asbestos Rock
Crocidolite asbestos rock is a fibrous amphibole mineral mined primarily from South Africa and Australia, appearing as blue needle-like fibers in rock matrix. The product is in its crude state, not processed beyond extraction, and is classifiable under tariff item 2524.90.00 as 'other asbestos'. However, crocidolite is specifically named in the tariff, so it may fall under a different tariff item if presented separately.
2524.90.00Crude Chrysotile from Open-Pit Mining
Crude chrysotile from open-pit mining is chrysotile asbestos crude extracted via open-pit methods, delivered as large ore fragments without screening or fiber opening. The product is in its crude state, not processed beyond extraction, and is classifiable under tariff item 2524.90.00 as 'other asbestos'. It is not specifically named in the tariff.
2524.90.00Raw Amosite Asbestos Ore
Raw amosite asbestos ore is natural amosite asbestos ore extracted from deposits, consisting primarily of grunerite amphibole mineral in fibrous form. The product is in its crude state, not processed beyond extraction, and is classifiable under tariff item 2524.90.00 as 'other asbestos'. It is not specifically named in the tariff, so it falls under the residual category.
2524.90.00Raw Chrysotile Asbestos Ore
Raw chrysotile asbestos ore is unprocessed chrysotile asbestos in its crude ore form, extracted directly from serpentine rock deposits, containing fibers embedded in host rock. The product is in its crude state, not subjected to any processing beyond extraction, and is classifiable under tariff item 2524.90.00 as 'other asbestos'.
2524.90.00Serpentine Chrysotile Crude Lumps
Serpentine chrysotile crude lumps are lump-form crude chrysotile asbestos from serpentine deposits, uncrushed and retaining natural ore structure without fiber extraction. The product is in its crude state, not processed beyond extraction, and is classifiable under tariff item 2524.90.00 as 'other asbestos'.
2524.90.00Tremolite Asbestos Powder
Tremolite asbestos powder is a white amphibole mineral in powdered form, obtained by crushing and milling raw tremolite-actinolite deposits. The product has undergone mechanical processing (crushing and milling) which is permitted under Chapter 25 Note 1, but no chemical treatment or further processing has occurred. It is classified under tariff item 2524.90.00 as 'other asbestos' since tremolite is not specifically named.
2524.90.00Unpurified Amosite Asbestos Splittings
Unpurified amosite asbestos splittings are roughly split laminae of amosite asbestos from ore veins, not further processed beyond initial splitting. This mechanical process is permitted under Chapter 25 Note 1, and the product remains in a crude state. It is classified under tariff item 2524.90.00 as 'other asbestos'.