▁Mountain ), ▁on ▁the ▁border ▁with ▁North ▁Korea ) ▁er upt ed ▁in ▁ 9 4 6 ▁AD . ▁This ▁was ▁one ▁of ▁the ▁largest ▁vol can ic ▁er u ptions ▁in ▁recorded ▁history . ▁There ▁have ▁been ▁three ▁er u ptions ▁in ▁the ▁B ait ous han ▁vol cano ▁area ▁in ▁the ▁last ▁ 4 0 0 ▁years ▁( 1 6 6 8 , ▁ 1 7 0 2 , ▁and ▁ 1 9 0 3 ). ▁ ▁Ash i ▁vol cano ▁of ▁the ▁Kun l un ▁Vol can ic ▁Group ▁in ▁north western ▁Tib et ▁er upt ed ▁in ▁ 1 9 5 1 ▁and ▁is ▁China ' s ▁most ▁recent ▁er u ption . ▁ ▁M ining ▁and ▁pet role um ▁China ▁has ▁many ▁different ▁types ▁of ▁min eral ▁resources ▁and ▁has ▁global ▁significant ▁res erves ▁of ▁many ▁of ▁them . ▁They ▁are ▁frequently ▁in ▁the ▁global ▁top ▁ 1 0 ▁countries ▁for ▁min eral ▁res erves ▁or ▁production . ▁They ▁produce ▁more ▁than ▁ 9 0 % ▁of ▁the ▁global ▁rare ▁earth ▁element ▁ore . ▁Ch rys ot ile ▁( as best os ) ▁is ▁still ▁m ined ▁and ▁used ▁extens ively ▁in ▁China ▁as ▁a ▁construction ▁material . ▁ ▁China ' s ▁iron ▁ore ▁is ▁mainly ▁found ▁in ▁n ortheast ▁and ▁south west ▁of ▁main land ▁China . ▁China ' s ▁largest ▁gold ▁min ing ▁region ▁is ▁in ▁the ▁N ortheast ▁of ▁the ▁country . ▁In ▁ 2 0 1 4 ▁China ▁m ined ▁more ▁gold ▁than ▁any