rock hound
http://wiki.answers.com/Q/What_do_you_call_a_rock_collector well....Rock collector or rock hound is what collectors use with each other. A geologist collects rocks, but for scientific study, not as a hobby. You might also have been thinking of a lapidarist, though technically that's someone who is an expert...
Amateur geology (known as rockhounding in the United States and Canada) is the recreational study and hobby of collecting rocks and mineral specimens from their natural environment. The first amateur geologists were prospectors looking for valuable minerals and gemstones for commercial purposes. Eventually, however, more and more people have been drawn to amateur geology for recreational purposes, mainly for the beauty that rocks and minerals provide.
Well rock collector is a good term but if you make it your profession to collect and study rocks you are called a petrologist. A Rockhound.
rock hound
A geologist is a person who studies rocks and rock formations. A rock collector or a rock hound is a person who collects rocks for fun.
Magma. Magma rises towards the surface when it's less dense than rock around it. Otherwise, it collects in magma chambers and cools, forming igneous rock.
It is an aquifer.
A person that collects stones is called a rock collector or rock hound. A lapidarist is an expert on precious stones and the cutting and engraving of them.
Rockhound. Those who study this professionally are called petrologists.
Magma. Magma rises towards the surface when it's less dense than rock around it. Otherwise, it collects in magma chambers and cools, forming igneous rock.
If you mean name given to molten rock then the answer is magma
magma chamber
"The Rock" was the name given to the prison island of Alcatraz in San Francisco bay. It is also used as a name for Gibraltar.
I call myself a rock-hound when checking the shapes, patterns of lines and cracks, and different types of rocks compressed together on Manitoulin Islands North West shoreline. Glacial movement of years gone by created very unique and different sized stones and boulders here. Its a rock-hounds picnic area.
Magma.
Lava .