When a volcano erupts, there is often a fine steam or mist released which contains a substance known as volcanic ash
Bentonite is a volcanic ash
As it contains many minerals (24 to 33), it serves to mineralize the soil

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Product Dimensions

Package Dimensions
Width : 4 inch
Height : 4 inch
Length : 9.5 inch

Item Weight: 3.3 pounds (View shipping rates and policies)
Shipping Weight: 3.25 pounds (View shipping rates and policies)

ASIN : B00028PP6Y