Chalcopyrite
The name "Chalcopyrite" is derived from the Greek words chalkos, "copper" and pyrites, "strike fire".


Chalcopyrite is a copper Iron sulfide mineral; the mineral crystallizes the tetragonal system. The color of the mineral is a brassy, golden yellow color. The color can be referred as “yellow copper”.

Chalcopyrite is often mistaken as Pyrite, because of its golden color. Chalcopyrite has a chemical composition a. It has a hardness of 3-4 on the moh’s scale. Chalcopyrite is one of the most important copper ore’s.

This is the Hardness Scale (Mohs Scale), and Chalcopyrite is in between 3 and 4 (Calcite and Fuorite). external image VLC151_Mohs_hardness_scale.jpg

Here in this picture you can see Chalcopyrite’s shiny gold like color.
external image Chalcopyrite.jpg

This is a picture of Pyrite, as you can see, Pyrite could be mistaken for Chalcopyrite.
external image pyrite.jpg

Chalcopyrite’s Crystal Shape can be a Tetragonal, or a prism.

Chalcopyrite has a metallic luster, although it is a metal sulfide rather than a metal. It is an excellent conductor of electricity.

external image images?q=tbn:ANd9GcR93EsWoSsqihq6r08_jFNPhne9429B-1kOPSKIPvQCntUGz7xSDg
Chalcopyrite comes in many colors rather then just gold. Chalcopyrite’s streak is green tinged black.

Chalcopyrite doesn’t have any cleavage, fraction is uneven; its brittle.

Chalcopyrite uses: Chalcopyrite is the most important primary ore of copper. A large portion of the copper produced in the world is obtained by the smelting of chalcopyrite and the ores associated with it.
external image copper_chalcopyrite.jpg


Here are 6 key terms you may not know:

Tetragonal: A four-sided polygon; a quadrilateral.
Luster: The state or quality of shining by reflecting light; glitter, sparkle, sheen, or gloss.
Streak: a portion or layer of something, distinguished by color or nature from the rest; a vein or stratum.
alloy: a mixture of two or more metals.
hardness: in mineralogy, the ability of one mineral to scrath another. this is measured by the mohs scale.
Mineralogy: the study of minerals, which includes a number of smaller sub-disciplines, such as crystallography.


Sources:

1. "How to Use Chalcopyrite Energy." 1999. Web. <http://www.ehow.com/how_2204150_use-chalcopyrite-peacock-ore.html>.
2. "Chalcopyrite." 2010. Web. <http://en.wikipedia.org/wiki/Chalcopyrite>.
3. "Chalcopyrite Mineral Data." Web. <http://webmineral.com/data/Chalcopyrite.shtml>.
4. Bryant, Ann. "Chalcopyrite - Mineral Properties and Uses." 2005. Web. <http://geology.com/minerals/chalcopyrite.shtml>.
5. "Chalcopyrite." 2010. Web. <http://www.encyclopedia.com/topic/chalcopyrite.as
6. Pellant, Chris. Rocks and Minerals 256. eBook.