(1) These pioneer prospectors practiced surface mining, obtaining gold from the alluvial deposits called placers.

(2) Silicate minerals constitute most alluvial sediment on Earth.

(3) The fertile soil is fine-textured, alluvial , loamy and free from boulders.

(4) A tube containing 6 grams of alluvial gold from the Cernavaia River also has a bicolor character.

(5) Above these sedimentary rocks is a sequence of interbedded alluvial floodplain deposits and palaeosols.