North American Product Classification System (NAPCS) Canada 2017 Version 1.0
- 163 - Diamonds and other non-metallic minerals (except cut gemstones)
- 16312 - Non-metallic minerals (except diamonds)
- 163123 - Phosphate rock
1631231 - Phosphate rock
Phosphate rock.
Illustrative example(s)
- natural aluminum calcium phosphatic chalk
- natural calcium phosphates
- phosphate rock concentrates
- phosphorite ores
- rock phosphate
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