Pyrite

Pyrite
General
CategorySulphide mineral
Formula
(repeating unit)
iron disulfide (FeS2)
Identification
ColorPale brass-yellow, tarnishes darker and iridescent
Crystal habitCubic
Crystal systemIsometric Diploidal, Space group Pa3
Mohs scale hardness6–6.5
LusterMetallic, glistening
StreakGreenish-black to brownish-black; smells of sulphur
Specific gravity4.95–5.10
SolubilityInsoluble in water
Other characteristicsparamagnetic

The mineral pyrite,[1] or iron pyrite, is an iron sulfide with the formula FeS2. This mineral's metallic lustre and pale-to-normal, brass-yellow colour have earned it the nickname fool's gold because of its resemblance to gold.[2][3][4][5][6][7] The term pyrite may also be used for some other sulphides such as copper sulphide.

  1. The name pyrite is derived from the Greek πυρίτης (puritēs), "of fire" or "in fire", from πύρ (pur), "fire".
  2. Julia A. Jackson, James Mehl and Klaus Neuendorf, Glossary of Geology, American Geological Institute (2005) p82.
  3. Albert H. Fay, A glossary of the mining and mineral industry, United States Bureau of Mines (1920) pp. 103–104.
  4. Hurlbut, Cornelius S.; Klein, Cornelis 1985. Manual of Mineralogy. 20th ed, John Wiley and Sons, New York. 285–286 ISBN 0-471-80580-7
  5. Pyrite on webmineral
  6. Pyrite on Mindat.org
  7. Handbook of Mineralogy

Pyrite

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