Minerals, Limestone & Phosphate Checklist

Macro minerals look like commodities and behave like technical products. Particle size, solubility and heavy metal compliance decide performance and legality.

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Specification

Product identified precisely (limestone, MCP, DCP, MDCP, salt, magnesium oxide)
Calcium and phosphorus assay minimum contracted
Particle size distribution specified — coarse vs fine for layers
Solubility or relative bioavailability requirement stated
Fluorine maximum contracted for phosphates
Lead, cadmium, arsenic and mercury within destination legal limits

Supplier & certification

Quarry or production plant named with feed-grade status confirmed
Feed-additive registration valid at the destination where required
Certificate of analysis per production batch provided
Contamination controls for the mine or plant reviewed

Verification

Assay and particle size tested on arrival against the specification
Heavy metal testing frequency defined in the contract
Sampling from multiple bags or bulk points, not a single point
Retained samples kept for the traceability period

Handling & intake

Dust control and operator safety measures in place at intake
Bag integrity, pallet condition and moisture damage inspected
Bulk density confirmed for bin sizing and dosing accuracy
Caking risk managed with moisture limits and stock rotation

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