corresponding to an increase in basal spacing from 14.4A. to 15.0A. When a flake of vermiculite in which interlayer magnesium has been partly replaced by strontium is examined by X-rays ...

The project was producing at a steady-state level of 30 000 t/y of vermiculite flake product. Production was halted in 2012 as a result of the terms of a 25-year exclusive distribution offtake ...