iron
Iron () is a chemical element with Symbol (chemistry), symbol Fe (from la, Wikt:ferrum, ferrum) and atomic number 26. It is a metal that belongs to the first transition series and group 8 element, group 8 of the periodic table. It is, Abundanc ...
spinel group The spinels are any of a class of minerals of general formulation which crystallise in the cubic (isometric) crystal system, with the X anions (typically chalcogens, like oxygen and sulfur) arranged in a cubic close-packed lattice and the cation ...
Zengdu District
Zengdu () is a district of the city of Suizhou, Hubei province, People's Republic of China.
Administrative divisions
Four subdistricts:
* Xicheng Subdistrict (), Dongcheng Subdistrict (), Nanjiao Subdistrict (), Beijiao Subdistrict ()
Five tow ...