1) Phosphate mineral 
Brockite is a rare earth phosphate mineral with formula: (Ca,Th,Ce)PO4·H2O. It crystallizes in the hexagonal system. It is typically granular to massive with only rare occurrence of stubby crystals. It is radioactive due to the thorium content. ==Discovery and occurrence== Brockite was first described in 1962 for an occurrence in the Bassick Mine...