Like everyday rocks that you find on the ground...
this is were minerals and ores are found, in "every day rocks" the miner colects the ore- surrounded by rock- then ships it off to be melted, in this prosses both ore and rock are usual melted, but you need amazingly high temperatures.
You need a heat source powerful enough to melt them. It really depends on the rock, but some rocks will not melt even at 1000 degrees Celsius! Alternately, you would need a powerful corrosive acid, such as sulfuric acid.
well rocks come from volcanoes erupting, they were all melted at some point. google it, it's pretty cool.
Yes. Heat them to a high enough temp, or pour hydrochloric acid on them.
Yes - melted rocks are called 'lava'.
yes with lots oh techey stuff
