Unlike alluvial gold, which is found as very small flakes on riverbanks, gold-bearing rocks have to be dug out of the ground. We're after pure gold, but rock that contains gold also includes lots ...

Mineros’ 100% owned Nechí Alluvial Property is located approximately 190 km north-northeast of Medellín in the northeast of the Antioquia Department, covering the municipalities of El Bagre ...

Name the parts of an alluvial fan, and discuss the sedimentary structures in ... Petrology of evaporites and chemical sedimentary rocks. We will look at hand specimens of coal, chert, ironstone and ...