Solution for megabase mining problem

[Frightning]

So I've seen a number of folks talking about how the resource density isn't high enough to really support megabases. Which results in eventually having to spend almost all your time moving miners from one mine to the next (and all other tear-down and set-up activities related to cleaning up an old mine and establishing a new one). I've read a fair bit on wikipedia about how real mining is done nowadays for various ores. It's much more complex than the way it's down in factorio. You don't just mine 'Iron Ore deposits' and get 'Iron Ore' out of it, real ores are often an amalgam of various raw materials that are useful to real applications. So there is a refining processes which must be designed for the chemical makeup of the actual ore (there are several ore types from which Iron is mined in the real world for example, and different processes are used for different ore types; feel free to read the links in the important ores section of: https://en.wikipedia.org/wiki/Ore to see what I mean).

I think this concept could be implemented in Factorio in a nice way: In addition to the existing basic ores, which would be minable from the start, a number of new ores (how many? up to you guys!) which would require refining processes and buildings to be researched and built, and could also yield rarer ore types in addition to the common types which would be part of more advanced recipes (would mean another recipe rebalancing). These ores could have effectively much higher densities of the basic materials (and maybe a few new ones) than the basic deposits which would be minable without research.

Some example candidate real world ores to consider:
Bornite (Copper, Sulfur, and some Iron)
Chalcocite (Copper, Sulfur)
Chalcopyrite (Copper, Sulfur, and Iron)
Hematite and Magnetite (Iron; maybe higher density; or rename standard iron deposits?)
Malachite (Copper; maybe higher density; green in color, so doesn't make sense as renaming of copper ore)

Others could be invented to contain Stone and/or Coal as well.

It might also be worth considering adding a few new materials, maybe those commonly used in steelmaking such as:
Chromium (hardness and corrosion resistance)
Manganese (most common alloying component; improves overall quality of steel)
Molybdenum (structural and stainless steels)
Nickel (stainless steels)
Silicon (ferro-magnetism, also famously used to make processing units IRL; after MUCH purification)
Tungsten (high-speed steels)
Vanadium (high-strength and wear resistance, ferromagnetism; tool steels)
Zinc (used to galvanize steel; that is protect it from weathering).

As well as other metals like:
Aluminium (High-strength, low weight alloys, including magnets with nickel and cobalt)
Cobalt (used in high-strength steels, also part of aluminium nickel cobalt alloys, which are magnetic)
Titanium (high-strength and temperature resistance)

Nickel and copper alloys could also be added in this process.

[ssilk]

I know, that the devs think about one or two more ore-types and some kind of endless resources.