16 Oz. Calcium Bentonite Clay. Our Calcium Bentonite Clay is an amazing gift from nature that was created millions of years ago in the Mojave Desert in our home state of California. It is quite simply volcanic ash that blanketed the area during periods of volcanic eruptions. The ash was covered by successive lava flows, resulting in today’s subsurface mines of what is known as calcium bentonite clay. It has been protected from leaching and exposure to the environment. In addition, this particular clay deposit was sealed away and isolated from the natural elements by a cap of zeolite minerals for forty-three million years. As a result, its absorptive properties have not been compromised by air or ground water contaminants. Calcium bentonite clay is a compound of trace minerals in their original, natural form. The clay has a powerful negative ionic charge, which makes it a powerful detoxifier. This highly charged, all natural calcium bentonite clay has a drawing power of 32 times its molecular weight. It’s extremely strong absorptive and absorptive properties make it ideal for use in deep cleansing of the skin and hair. It is milled to a 325 screen mesh to provide a smooth, creamy, less gritty texture. This clay has a 9.7pH and has Montmorillonite properties from the smectite family of clays. Earth’s Living Clay has been selling calcium bentonite clay since 2005. You can find a lot of information – and misinformation – about clay on the Internet. The most important thing to know is that not all clays are the same. There are vast differences in the quality, origin and effectiveness of clays.