They used water. Water was used to separate edit from the gold. In individual methods a sluce box, rocker, or pan was used. In larger operations hydraulic hoses were used to wash whole hillsides away. You can still see the damage this did to the environment. Finally, with ores the gold was removed from the Quartz by crushing.
they had to separate dust and rock crumbs
There not. it is much easier to separate a heterogeneous mixture
what is a way nature can separate mixtures
with sand
you can do it by the temperature
Physical
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to pure them
there are several ways to separate mixtures...evaporation, distillation, filtering, paper chromatograpy
Filtration is the best method.
Some mixtures can be easily separated and some mixtures can't be easily separated.
Mixtures.