Why do ores form veins of the same metals? Gold, silver, iron, etc. why would they clump together underground

Question

In other words, when you find a 'vein' of gold you can stay follow the vein for a long time until its 'tapped'. Why would the planets formation create these veins? Or the planets geological evolution create it?

Answer 1

Because much of the earth and rock-forming forces involve heat, magma, water, and movement. When rocks shift and move, they create voids into which other fluids will seep, then bring in other materials with them,and build them up. That's where the veins come from, moving rock due to tectonic and magma movements. And, since different minerals have different specific gravities, they'll tend to congregate in the same areas due to their similar weight and mass. Lighter ones will move up, heavier ones down. And countering forces to sometimes stir them up.

- The Gremlin Guy -

Answer 2

Vein Of Metal Ore

Answer 3

Veins basically are created when you put pressure on different competent rocks. These will crack in different angles and when then sliding apart or together cavities will form. Circulating hydrothermal water will then start to precipitate elements it solved while going through the surrounding rock into those cavities. Note that veins are by no means the only places to find ore, nor are they actually relevant to modern mining.