Abstract
Serpentine-like materials associated with clinozoisite rock in serpentinite were investigated with chemical, X-ray and thermal methods, and it was revealed that the materials are mechanical mixtures of two polymorphic minerals, namely, aluminian serpentine and chlorite which are chemically similar (intermediate between serpentine and clinochlore) and of low crystallinity. The aluminian serpentine has an ortho-hexagonal cell and belongs to the aluminian serpentine series recently synthesized. The closely associated chlorite may have also an ortho-cell.
