Physical and Chemical Properties | Phosphorite is one of the main minerals of rare earth minerals, is a phosphate mineral. Tetragonal crystal system, the crystal is tetragonal columnar or double cone aggregate in the form of scattered particles or dense block. The color is yellow-brown, red, or gray. Glass gloss to grease gloss. Hardness 4~5, density 4.4~5.1g/cm3. Often radioactive, but also with a weak multi-color. Chemical stability. It is mainly produced in granite, granite pegmatite and basic granite, and symbiotic with zircon, monazite, tourmaline and limonite. In addition, it is often produced in sand ore. |