Monday, December 10, 2012

Rocks and Minerals

Minerals!

Minerals are the "building blocks" to our earth's crust and rocks. The most commonly known minerals are the quartz, feldspar, hornblende, and mic.

The two most common minerals are:
Quartz


Feldspar




















Here is more info:
http://www2.nature.nps.gov/geology/usgsnps/rxmin/mineral.html


Rocks:
Rocks are a composition of minerals that are created by weather, heat, and other natural causes. Rocks are classified into three different categories based on the way that they were composed: Igneous Rocks(Cooled from lava), Sedimentary Rocks(sediment molded together), and Metamorphic Rocks(go through changes to make a more crystalized rock).


Granite(Igneous Rock)

Hematite (Sedimentary Rock)


Slate(Metamorphic Rock)

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