What functional difference does the material accessibility of Copper suggest regarding Mars's energy compared to Gold?

Answer

Copper symbolizes an energy meant to be actively engaged with and used in the world

Copper, being an accessible, foundational metal, symbolizes that the energy Mars governs is meant to be actively engaged with, serving as the metal of the doer.

What functional difference does the material accessibility of Copper suggest regarding Mars's energy compared to Gold?
MangalElementMetalsymbolism