Nota: A tradução desta entrada está atualmente em revisão de qualidade, portanto parte do conteúdo é exibida temporariamente apenas em inglês.
Este verbete ainda não foi traduzido para o seu idioma, portanto o original é exibido abaixo.
galena
Galena is characterized by its heavy weight and distinct silver-grey metallic sheen, often appearing as chunky, cubic crystals. In a geological context, it is the quintessential example of a lead ore, frequently associated with silver and zinc in hydrothermal deposits.
As a mass noun referring to a mineral species, it is typically treated as uncountable. When referring to specific samples or crystals, it is common to use partitive constructions such as a piece of galena or a crystal of galena to specify quantity.
Meanings
Examples
Look at the metallic luster of this galena specimen.
The geologist identified the grey mineral as galena.
Early crystal radios used a piece of galena as a detector.
The sample of galena exhibits perfect cubic cleavage.
We found several clusters of galena in the mine.