bertrandite

/bur-truhn-dahyt/US // ˈbɜr trənˌdaɪt //

伯特兰德石,贝雷特石,贝特朗特石,贝特朗特

Definitions

n.名词 noun

1
- : a mineral, hydrous beryllium silicate, Be4Si2O72, colorless or pale yellow, with a vitreous luster, occurring as tabular or prismatic crystals in pegmatites and hydrothermal veins.