Vermiculite is a naturally occurring mineral composed of shiny flakes of a similar appearance to mica. While not dangerous if untainted, in many cases vermiculite is nested closely in the ground to asbestos. Manufacturers are not always careful to ensure the vermiculite they sell is pure. From 1919 to 1990, almost 70% of all vermiculite … Continue reading What You Need To Know About Contaminated Vermiculite