ramsdellite

斜方锰矿

词形变化

ramsdellites 复数

释义与例句

n.
  1. 1.

    A black or gray orthorhombic mineral form of manganese dioxide

    可数 不可数 化学 地质

词源

Named in honour of Lewis Stephen Ramsdell (1895-1975), Professor of Mineralogy at the University of Michigan, who first discovered the mineral From Ramsdell + -ite.

来源：wiktionary