1. A new generation of solar panels relies on gallium and indium, whose global supplies appear close to exhaustion.
2. Substantial quantities of stannum, gallium and rhenium were also found in the deposit.
noun
1. a rare silvery (usually trivalent) metallic element
brittle at low temperatures but liquid above room temperature
occurs in trace amounts in bauxite and zinc ores
Synonym: Ga atomic number 31