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en.wikipedia.org/wiki/Pyrite

The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical ... Pyrite is usually found associated with other sulfides or oxides in quartz veins, sedimentary rock, and metamorphic rock, as well as in coal beds ...

www.minerals.net/mineral/pyrite.aspx

In the old mining days, Pyrite was sometimes mistaken for Gold, as they frequently occur .... Utah, large, well shaped pyritohedrons and cubes were once found.

geology.com/minerals/pyrite.shtml

These tiny spheres of euhedral pyrite crystals are often found in organic muds, coal, shale, and other types of rocks. This is a framboid from the Waynesburg coal ...

www.mindat.org/min-3314.html

Pyrite Group . Pyrite is a very common mineral, found in a wide variety of geological formations from sedimentary deposits to hydrothermal veins and as a  ...

www.britannica.com/science/pyrite

Pyrite is called fool's gold because its colour may deceive the novice into thinking he has discovered a gold nugget. Nodules of pyrite have been found in ...

www.thermofisher.com/blog/mining/pyrite-the-real-story-behind-fools-gold

Apr 1, 2014 ... “Fool's Gold” is technically known as pyrite or iron sulfide (FeS2) and is ... Pyrite is found in a wide variety of geological settings, from igneous, ...

www.windows2universe.org/earth/geology/min_pyrite.html

Apr 15, 2003 ... But unlike gold, pyrite is not worth large amounts of money. That's because it is a very common mineral. It is found in all three rocks types: ...

www.mcdougallminerals.com/blog/the-pyrite-of-navajun-spain

Jan 11, 2014 ... Pyrite Crystals from the Victoria Mine, Navajún, La Rioja, Spain – 7.2 .... although other crystal forms are also found at the Victoria Mine (and at ...

www.esci.umn.edu/courses/1001/minerals/pyrite.shtml

Marcasite is the only other yellow metallic mineral as hard as pyrite. ... Pyrite is also found along the Canadian border, in massive sulfide vein deposits of the ...