263,841. • Density. 120/km 2 (310/sq mi) Time zone. UTC+8 ( China Standard) Tianzhu County ( simplified Chinese: ; traditional Chinese: ; pinyin: Tiānzhù Xiàn) is a county in eastern Guizhou province, China, bordering Hunan province to the north, east, and southeast. It is under the administration of the Qiandongnan Miao ...Tianzhu County, Qiandongnan, Guizhou, China - Mindat Source of the Chaoyangzhai Gold Deposit, Southeast Guizhou: Constraints from LA-ICP-MS Zircon U–Pb Dating, Whole-rock Geochemistry and In Situ Sulfur Isotopes. Minerals, 9 (4), 235. ⓘ ''Apatite''. Formula: Ca 5 (PO 4) 3 (Cl/F/OH) Locality: Dahebian Mine, Tianzhu County, Qiandongnan, Guizhou, China.