Item talk:Q162962
From geokb
Mindat Short Description
The humite subgroup constitutes a polysomatic series of minerals with the general formula n[Mg2(SiO4)]⋅Mg(OH,F)2)2 with n = 1, 2, 3, or 4, where n designates the number of olivine layers between each norbergite Mg(OH,F)2 layer in the structure. There i...