含角礫晶屑岩屑凝灰岩(Sericitized Rhyolitic Breccia-Bearing Crystal-Lithic Tuff)是採集於大興安嶺的岩石標本。特徵描述 風化面黃褐色,新鮮面灰黑色,凝灰結構,塊狀構造碎屑,岩屑20%,晶屑15%,基質65%,岩屑:流紋質,角礫8.5mm,...