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 ...

A concrete company has plans to ramp up its production by drilling hundreds of feet into the San Joaquin River – while the ...

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 ...