The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with
the chemical .... In the long term, however, oxidation continues, and the hydrated
sulfates formed may exer...
The formation of pyrite requires the presence of organic matter in the sediment,
sulphate in solution in the pore water, and locally anerobic (reducing) chemical ...
Sedimentary pyrite formation during early diagenesis is a major process for
controlling the oxygen level of the atmosphere and the sulfate concentration in ...
Pyrite is a very common mineral, found in a wide variety of geological ... Well
crystallized specimens are generally relatively stable, while pyrite formed as ...
Geological Society of America Special Paper 379 2004 Mechanisms of
sedimentary pyrite formation Martin A.A. Schoonen* Center for Environmental
Apr 26, 2015 ... So why is it that the pyrite in this rock forms nearly perfect cubes? ... the shape is
dependent on the concentration of sulphur during its formation.
Major stages of formation (bacterial sulfate reduction, formation of Fe
monosulfides by reaction of H 2 S with Fe minerals, pyrite formation by reaction of
water. Thus, pyrite formation in Green Lake is probably not limited by availability
of sulfate. Second, most modern euxinic environments are not marine, but rather
Sedimentary pyrite formation: An update. Authors: Berner, Robert A. Affiliation:
AA(Department of Geology and Geophysics, Yale University, New Haven, ...
Mar 6, 2015 ... The golden color and shine of iron pyrite (which is responsible for its nickname, "
fool's gold") may grab all the attention. But, there is another ...