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

Table 5

Pearson correlation of kaolin from Huayacocotla Ver. and Alumbres Hgo.

Variables	SiO2	Al2O3	FeO	TiO2	CaO	K2O	Na2O	SO2	TSt
SiO2	1	−0.191	−0.344	−0.519	−0.284	−0.643	−0.546	−0.637	0.620
Al2O3	−0.191	1	−0.427	0.727	0.236	−0.530	0.331	0.172	0.421
FeO	−0.344	−0.427	1	0.062	0.006	0.634	−0.284	0.036	−0.650
TiO2	−0.519	0.727	0.062	1	0.056	−0.219	0.026	0.223	0.235
CaO	−0.284	0.236	0.006	0.056	1	0.044	0.704	0.661	−0.339
K2O	−0.643	−0.530	0.634	−0.219	0.044	1	0.272	0.385	−0.940
Na2O	−0.546	0.331	−0.284	0.026	0.704	0.272	1	0.733	−0.430
SO2	−0.637	0.172	0.036	0.223	0.661	0.385	0.733	1	−0.487
StT (°C)	0.620	0.421	−0.650	0.235	−0.339	−0.940	−0.430	−0.487	1

Values in bold are different from 0 with a significance level a = 0.05; T_St is the stability temperature.