5 pounds of Organic Soft Rock Phosphate Fines. FREE SHIPPING Powder rock phosphate and very small granular mixed together. A great addition to compost, soil, teas, or any organic growing operation. We have this product in bulk and package it in smaller sizes for each order. 0-3-0 Available Phosphate ………………………….3% Total Phosphate………………………..20% (CA) Calcium…………………………….20% (FE) Iron………………………………….1% (ZN) Zinc……………………………….0.1% Derived from mined Soft Rock Phosphate