What is "fool's gold" made of?

Answer

The nickname "fool's gold" refers to the mineral pyrite because of its similarity in shape and color to actual gold. Pyrite differs from gold in its crystalline structure and shares more chemical similarities with iron sulfides and marcasite than with gold.

Pyrite is a sulfide mineral frequently found in conjunction with other sulfides. It is also sometimes found alongside gold, arsenic, nickel, silver and cobalt. Unlike gold, pyrite is susceptible to oxidation and rusting, altering both its color and its structure, making it unsuitable for construction materials. Decaying pyrite can leak sulfuric acid and cause environmental damage. Pyrite releases heat that can cause explosions in mines.

Q&A Related to "What is "fool's gold" made of?"
Fool's gold is a mineral called Pyrite, and is called fool's gold because due to its color and luster, many times people mistake it for gold when they are mining.
http://www.ask.com/web-answers/Science/Other/what_...
No one 'made' it. It is a mineral called iron pyrites, which looks similar to gold in ore.
http://wiki.answers.com/Q/Who_made_fools_gold
Three large gold-colored rocks. Gold is a metal; pyrite is a mineral, and while they are visually similar, there are significant differences if you know where to look, and how to
http://www.ehow.com/info_8222054_difference-real-g...
A gold crown is not just amalgam. While it does contain some gold it is really a mixture of metals. The dentist can order the crown as a mixture of high noble, noble, semi-precious
http://www.quora.com/Dentistry/What-are-gold-crown...
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