The Chair of the Fifth Committee is elected by the General Assembly on the basis of regional rotation. The Rapporteur comes from the regional group that held the chair of the Committee the previous year.
Large ore bodies of hematite are usually of sedimentary origin, and it is widely distributed in sedimentary rocks as a cement. High grade ore bodies can be found in metamorphic rocks as a result of contact metasomatism. Hematite is also as an accessory mineral in igneous rocks.
Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, with high concentrations of OHâ, Fâ and Clâ ions, respectively, in the crystal. The formula of the admixture of the four most common endmembers is written as Ca10(PO4)62, and the crystal unit cell formulae of the individual minerals are written as Ca10(PO4)6(OH)2, Ca10(PO4)6F2 and Ca10(PO4)6Cl2. The mineral was named apatite by the German geologist Abraham Gottlob Werner in ...