May I please ask whether Basalt powder would work as substitute for phyllite in JS? I also see Moroccan Red Clay powder on Amazon; would this work? I am also in the US and unable to locate Phyllite powder.  

Azomite has a low specific gravity, making it very difficult to precipitate when manufacturing JS.  

Thank you so much for your gracious response. Your work is an incredible blessing.  

Hello, as a follow-up is Basalt a good replacement? I can find this easily. Thank you!