We are the biggest pyrite products manufacturer in China. Our main products are high quality iron pyrite/ferro sulphide lumps and its powder. The quality and the size as follows:

Iron Pyrite lumps:
Quality:
S 45%min;
Fe 40%min;
Si 3%max;
H2O 1%max.
Size: 3-15mm; 10-30mm; 10-50mm; 10-80mm. 90%min

Iron Pyrite powder
Quality:
S 45%min;
Fe 40%min;
Si 3%max;
H2O 1%max.
Size: 0-1.6mm; 0-3mm; 0-5mm, -100mesh; - 200mesh; - 325mesh; - 400mesh.
Pass through 90%min