(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.
