Phosphorite Flour

Apatite is the most abundant crystalline phosphate mineral found as an accessory mineral in practically all kinds of igneous rocks. Sometimes it is concentrated in pegmatite’s, metallic veins and magmatic deposits. It also occurs in metamorphic rocks and as a secondary mineral in Phosphatic rocks of sedimentary origin. Rock phosphates (or Phosphorite) are sedimentary Phosphoric deposits comprising fine grained mixture of various calcium phosphates, most important being hydroxyl-apatite, carbonate-apatite, flour-apatite and their solid solutions. About 80% phosphate production in the world is derived from phosphate rocks (Phosphorite) containing one or more Phosphatic minerals, usually calcium phosphate of sufficient purity and quantity to permit its use directly or after concentration in manufacturing commercial products.