In the case of azomite, the specific gravity is low, so precipitation does not proceed.
Rockdust or mud with other heavy weights are also possible.  

I have a local spot along the shoreline pretty much clay mixed with sand i wanted to use that because its local but its very dense and thick so that might work. Do you think JS will help with a cutaneous lupus rash? I know it can help heal eczema i was hoping it can help a family members rash