How to Use Soil AmendmentsDiatomite Rock | Organic ...
Diatomite rock is mostly made of the mineral silica. This is because the diatoms had an external cell wall made of silica, called a frustule. However, diatomite rock is inert in the garden soil, so it will not provide much if any minerals to your plants. Diatoms still swim abundantly in both fresh and salt water today, and are still becoming ...