Cross Section and Composition of Halloysite Microtubules
Halloysite (Al2Si2O5(OH)4•2H2O) is chemically identical to kaolin clay, except the individual mineral crystals are curled into micron sized tubes. This gives Halloysite special properties. Diagram scale: 1Å (angstrom) equals one ten billionth of a meter, 1nm (nanometer) equals one billionth of a meter, 1µm (micron) equals one millionth of a meter.
Halloysite Clay CAS# 1332-58-7 - Halloysite is a special form of Kaolin and has the same CAS#.
The Following Link is to research on the safety of halloysite on living cells.
Cytocompatibility and Uptake of Halloysite Clay Nanotubes
This Link is to a Presentaion by the Institute for Micromanufacturing at Louisiana Tech University. Capabilities of Halloysite Nanotubes are Demonstrated.
Clay Nanotube for the Controlled Release of Active Agents
Clay Nanotube for the Controlled Release of Active Agents
The Environmental Protection Agency (EPA) has listed Halloysite as 4A which means minimal risk inert ingredients.
The Food and Drug Administration (FDA), has designated Halloysite as GRAS (Generally Recognized As Safe)
Halloysite is a non toxic natural material. Download the Material Safety Data Sheet in the link below. There is more safety data provided on the Precious Mineralz website.

halloysite_msds.docx | |
File Size: | 24 kb |
File Type: | docx |
The Northstar Mine is located adjacent to the Dragon mine operated by Applied minerals (AMNL) Additional information about halloysite can be found at Appliedminerals.com