Changed the gold and adamantine outputs to their native ore conterparts.

-Added crushing of dredged stones at a powered millstone for extra goodies. Composition of stones is roughly based on real-life.
-Reduced the drop rate of some metal ores to account for the extras from crushing.

-Ilmenite is now dredgeable.
-Chromite is now dredgeable.
-Obsidian is no longer dredgeable.
-Native Platinum is no longer dredgeable (but can now be found via chromite)

-Added an ultra-rare way to get Secret Goodies by processing Kimberlite (from Gabbro), with Obsidian as a catalyst. You'll need to get the obsidian by making an obsidian caster or mining it. Good luck...

P.S. Bauxite doesn't yield aluminum, since dorfs haven't invented electrolysis yet.