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Feldspar

Feldspar STEM Geography

What is feldspar?  According to the North Carolina Geological Survey:

Feldspar is the most common rock-forming mineral (about 60% of the earth’s crust)...The mineral name feldspar is derived from the German words feld + spar. The word "feld" is "field" in German and "spar" is a term for light colored minerals that break with a smooth surface.

Feldspar minerals are usually white or very light in color, have a hardness of 6 on the Mohs' Scale of Hardness and perfect to good cleavage (plane of breakage) in two directions.

 

Media Credits

Image online, USGS (U.S. Geological Survey).

PD

 

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"Feldspar" AwesomeStories.com. Oct 07, 2013. Oct 22, 2017.
       <https://www.awesomestories.com/asset/view/Feldspar/1>.
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