近几年来,在苏北六合一盱眙新生代玄武岩露头区陆续发现了凹凸棒石粘土矿床一处、矿点近十五处;此外,宝石普查工作也获可喜的线索.该区玄武岩基岩出露面积约近一千平方公里,在活动时代上大体可分为早、晚第三纪两 In recent years, a series of attapulgite clay deposits have been found successively in the Lukang Cenozoic basal outcrop area in the northern part of the northern Jiangsu Province, with a total of 15 ore mines. In addition, the census of gems also received gratifying clues. An area of ​​about 1,000 square kilometers, in the event era can be divided into early and late Tertiary two