Question

??? Placer deposits means?????

Answer 1

In geology, a placer deposit or placeris an accumulation of valuable minerals formed by gravity separation during sedimentary processes. The name is from the Spanish word placer,meaning "alluvial sand". ... Types ofplacer deposits include alluvium, eluvium, beach placers, and paleoplacers.

Answer 2

Answer:

Placer deposit, natural concentration of heavy minerals caused by the effect of gravity on moving particles. When heavy, stable minerals are freed from their matrix by weathering processes, they are slowly washed downslope into streams that quickly winnow the lighter matrix.