The white deposits are calcium and other minerals found in our water or in fertilizers. The wicking action of the clay causes them to accumulate on the outside, where they will not harm pot or plant.

Enshrouded clay locations. The Revelwood area is where you’ll find most clay deposits, and since the majority of them are ...

About 68% of total groundwater used in the county goes to agriculture, ... take 100 years or more for water to percolate through the extensive silt and clay deposits to reach the underlying ...

Today, Thacker Pass is just one portion of the prehistoric caldera’s area, but it’s the location where the deposit of lithium-containing clay minerals is believed to be richest.

The clay lithium deposits at Thacker Pass are unusual. The metal was originally contained in glass and ash from volcanic eruptions, eventually leaching into the clay in the caldera.