braunite

n. 褐锰矿[据德国19世纪考古学家August E.Braun姓命名]

词形变化

braunites 复数 braunites

释义与例句

n.
  1. 1.

    A silicate mineral containing divalent and trivalent manganese and forming grey-black tetragonal crystals.

    可数 不可数 化学 地质

词源

From Braun + -ite after alderman Braun of Gotha, Thuringia, Germany.

来源：wiktionary