黔北旦坪铝土矿床胶体包粒成因及其形成时间估算*
成龙1,2, 余文超1,2, 杜远生1,2, 周锦涛1,2, 熊国林3, 翁申富2,4, 郭尚宇5

Genesis of colloidal pellets of Danping bauxite deposit in northern Guizhou Province and estimation of their mineralization duration
CHENG Long1,2, YU Wenchao1,2, DU Yuansheng1,2, ZHOU Jintao1,2, XIONG Guolin3, WENG Shenfu2,4, GUO Shangyu5
黔北旦坪矿区大竹园组铝土矿含矿岩系典型手标本照片 A—灰白色胶体包粒状铝土矿; B—灰色胶体包粒状铝土矿; C—灰色碎屑状铝土矿; D—灰黑色含大量黑色碎屑铝土质黏土岩;E—灰色不含碎屑致密状铝土质黏土岩; F—灰白色含大量石英脉碎屑状铝土矿