umbalite

词形变化

umbalites 复数 umbalites

释义与例句

n.
  1. 1.

    A variety of garnet consisting of a mixture of pyrope, almandine, and spessartine, having the chemical formula Mg₃Al₂(SiO₄)₃-Mn²⁺₃Al₂(SiO₄)₃, exclusively found in the alluvial deposits of the River Umba, and having a light-pink to purple colour.

    不可数
  2. 2.

    A gemstone consisting of the mineral umbalite.

    可数 不可数

词源

Named for the Umba Valley of the Tanga Region of Tanzania, the location of the mineral’s first discovery in 1978: Umba + -lite.

来源：wiktionary