BrixBlend is the first engineered basalt rock dust gradation on the market, and remains the gold standard. A perfect blend of particle size optimizes the function of the rock dust in the soil matrix. Use this rock dust for the "Enhanced Weathering" effect for carbon and nitrogen capture, assimilation and chelation of mineral complexes for plant nutrient uptake in the root zone and for promoting good tilth. An all purpose paramagnetic rock dust. Perfect for direct to ground applications in gardens, raised beds, orchards, lawns, ornamentals, soil or soil-less mixes and composting. For optimum results follow these guidelines: Use between 5-50 lbs./ 100 sq. ft. in tillage, 5-25 lbs./ 100 sq. ft. top dressing. Fortifying compost use 20-25 lbs./ cu. yd. of biomass raw material. For potting mixes use up to 5% by volume. A foundation material for regenerative agricultural practice. USDA National Organic Program Standards compliant.