Kisameet Glacial Clay

The story about clay from Kisameet Bay began centuries ago when the mineral clay was first discovered by the Heiltsuk people. Natural elements of such purity, smooth texture, and vibrant colour are still rare today, so we can imagine that this blue-green mineral may have been precious to the people inhabiting the rugged central coast 10,000 years ago.

In the 1930’s samples of the mineral clay were obtained by Dr. Ernst Hauser at MIT. His findings popularized the material, then known as Rayvite, which was sold from the 1940’s to the 1950’s.

In recent years Kisameet Glacial Clay Inc., a private BC company, has worked to further pursue the scientific research and proceed through the stages for commercialization. For further information please go to

Dr. E. H. Hauser’s Analysis

It’s reported that in the 1930s a sample of the mineral clay from Kisameet Bay was given to a commercial fisherman and later ended up at MIT. A well-known colloid scientist, Dr. Ernst Hauser studied it and compared it to many other known clays. In his white paper, The Kisameet Bay Clay Deposit, he summarizes his analysis:

“On the basis of x-ray diffraction studies, ultra-microscopy by incident light, electron microscopy and systematic studies of such colloidal phenomena as electrophoresis, thixotropy, dilatancy and film formation it is concluded that the Kisameet Bay Clay deposit is an aluminum silicate which differs from all other known clay minerals not only in its composition but also in it’s properties.”