What processes are responsible for the formation of copper ?

The high temperatures of volcanic magma creates hydrothermal veins, allowing some of the heat to escape near the upper layers of the Earth's crust. This is why copper is often found in the sedimentary layer, where sand and mud are compressed until they form a layer of sedimentary rock on the surface of the earth

Explanation:

yes its like the dead sea which is full of salt which makes you stay afloat

so yes an egg will float in salt