Chemical, Mineralogical, and Refractory Characterization of Kaolin in the Regions of Huayacocotla-Alumbres, Mexico

Table 4

Analysis of principal and secondary phases of the kaolin samples at Huayacocotla and Alumbres by XRD.

Sample	Principal phase (>50%)	Secondary phase (10–40%)	Trace (<5%)
Huayacocotla
H-RMC-4	An	Kln	—
H-RMC-9	Cr	Kln	Mag
H-RMC-14	Cr	Kln	Qz
H-RMC-21	An	Kln	Mag
H-RMC-32	An	Qz	—
H-RMC-35	Kln	Qz	—
Alumbres
A-RMC-25	Qz	Py	Ill
A-RMC-26	Qz	Py	Kln, Ill
A-RMC-40	An	Dck	Cr, Ill, Sil
A-RMC-45	An	Dck	Qz,

An = andalusite, Cr = cristobalite, Qz = quartz, Kln = kaolinite, Dck = dickite, Py = pyrite, Mag = magnetite, Ill = illite, Sil = sillimanite.