Table 1. Crystalline phases identified from XRD data of pyrite powder concentrate ball milled for 7 min.

Phase name	Formula	Matching crystal structure reference
Pyrite	FeS2	Wu et al. (2004 ▸)
Quartz α	SiO2	Antao et al. (2008 ▸)
Albite, low	NaAlSi3O8	Armbruster et al. (1990 ▸)
Pyrrhotite, 4M	Fe7S8	Morimoto et al. (1975 ▸)
Rutile	TiO2	Shintani et al. (1975 ▸)