Glacial Rock Dust

Along with Azomite, glacial rock dust was one of the first rock materials to be widely promoted as a garden soil amendment. It was thought that as the glaciers retreated, they left concentrated deposits of sand and gravel placer, that reflected a wide range of rock material from broad geographic regions. These glacial moraine deposits are rich in diversity, and frequently also contain alluvial loess and silts. It was thought that glacial rock dusts emulate the natural forces that regenerated and remineralized many areas of North America.These deposits can, however, also be inconsistent in the value of material they provide. Often, the softer minerals have been weathered away, which leave behind the a greater proportion of harder, less nutritive materials. Our glacial rock dust is finely micronized, which helps the material break down much more rapidly under the action of the soil microbes