Basalt Rock Dust-5lb.

Basalt Rock Dust: The Ultimate Soil Enhancer

Basalt Trail Mix: 5-10% larger pebbles from 1/4" up to 1/2" in size with the remainder of the rock dust the size of sand or finer.

This all natural basalt is pulled directly from the Grand Mesa location in western Colorado and has been left totally natural without grinding into a flour. We have screened out anything larger than 1/2" and that leaves you with the most cost effective and natural version of basalt for soil building. Consider combining with small amounts of our premium Basalt Rock dust Flour.