Gneiss Railway Ballast
Metamorphic gneiss crushed to AREMA #4 ballast specification for mainline railway track support. Provides excellent lateral stability under HTS 2517.10.00 railway ballast provision. Banded appearance from mineral layering.
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More Specific Codes
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If granite-gneiss dimension stone
Dimension stone gneiss excluded by chapter notes for worked products.
If architectural crushed gneiss
Decorative crushed material for buildings differs from railway aggregate.
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Import Tips & Compliance
• Railway engineering certification linking to specific track projects strengthens classification
• Foliation plane analysis ensures proper crushing orientation for strength
• Avoid thin banding; weak lamination risks construction rejection
Related Products under HTS 2517.10.00
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Hard crushed stone, typically basalt or granite sized 1.5-2.5 inches, used as railway ballast to support tracks and facilitate drainage. Meets HTS 2517.10.00 criteria as broken stone for railway ballast applications. Angular shape from crushing prevents shifting under load.
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