Is vermiculite hazardous

Vermiculite itself is not inherently hazardous; however, some vermiculite, particularly the type mined in Libby, Montana, has been found to contain asbestos, which poses serious health risks when inhaled. Asbestos exposure can lead to lung cancer, mesothelioma, and other respiratory diseases. It is important to check the source of vermiculite and ensure it is asbestos-free before use. If in doubt, consulting safety guidelines or professionals is recommended.