English Wikipedia - The Free Encycl...
הורד מילון זה
Rock (geology)
In geology, rock or stone is a naturally occurring solid aggregate of one or more minerals or mineraloids. For example, the common rock granite is a combination of the quartzfeldspar and biotite minerals. The Earth's outer solid layer, the lithosphere, is made of rock.

See more at Wikipedia.org...


© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License