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- Diatomaceous Earth packaged under our FOSSIL SHELL FLOUR® label comes from an extremely pure fresh water deposit of the diatom Aulacoseira from a deposit created in the Miocene epoch
- Why is this diatom so special? Its shell is made of amorphous silica
- Its hardness keeps it from dissolving in liquid
- The holes along the diatom's wall allow it to absorb moisture, hence its use as an anti-caking agent
- Darker colored Diatomaceous Earth often contains an excess of a particular mineral such as iron or a high percentage of clay