abstract:The humite groupGaines et al (1997) Dana's New Mineralogy Eighth Edition, Wiley is a group of nesosilicates with the general formula An(SiO4)m(F,OH)2.
It is emphasized that the amount of K_2O inthe batch composition not only has an effect on the growth of mica crystalsbutalsoisa determining factor to the segregation of humite in the melt.
