quartz ---------------------------------- Your question is ambiguous, is it the name of a mineral you want, or the name of a magma that is cooled below the earths surface?
Quartz is OK for a mineral but if you want the 6 letter name for the rock then:- A pluton in geology is an intrusive igneous rock body that crystallized from magma slowly cooling below the surface of the Earth.
Basalt
extrusive igneous rock
Igneous rocks are formed on and below the surface of the Earth when lava or magma cools enough to crystallize.
igneous rocks are formed by magma reaching earths surface and cooling quickly to form extrusive igneous rock.another igneous rock is called intrusive igneous rock. it is formed when magma cools and hardens below the surface.
Plutonic rocks, generally coarse grained, interlocking texture, high density. eg. Granite
It is not true. Extrusive rock forms on the surface from solidifying lava.
ignious rock
Intrusive igeneus such as basalt
Intrusive igneous rock.
extrusive- when melted rock material coools on earths surface instursive-when the melt cools below earths surface
Volcanic (Extrusive) igneous rock, which are formed by lava that comes out of the earths crust, then cools and solidifies rapidly on the earths surface due to exposure to the environmental atmosphere.
Most silicate minerals are formed when molten rock cools at either the earths surface, or deep underground.
extrusive igneous rock
it would be lava , magma is in the ground and flows on earths surface and cools to lava
Igneous rocks are formed on and below the surface of the Earth when lava or magma cools enough to crystallize.
igneous rocks are formed by magma reaching earths surface and cooling quickly to form extrusive igneous rock.another igneous rock is called intrusive igneous rock. it is formed when magma cools and hardens below the surface.
When magma cools at the surface of the Earth, it cools very quickly and hardens on the Earths crust. However, it continues flowing underneath, forming interesting textures.
Plutonic rocks, generally coarse grained, interlocking texture, high density. eg. Granite