Relationship between pyrite formation and organic sulfur content of coal as revealed by electron microscopy

Conference · Fri Jan 01 00:00:00 EST 1982

OSTI ID:5668251

Raymond, R Jr; Hagan, R C

There are a large number of questions concerning the mode of occurrence of organic sulfur in peat, and what, if anything, alters its occurrence during and after coalification. The formation of pyrite during periods of peatification and coalification has been hypothesized to have a great effect on the organic sulfur content of organic material surrounding the pyrite. Measurement of organic sulfur contents at different distances from pyrite particles would serve as direct experimental proof for or against this pypothesis. A combination of in situ energy dispersive spectrometer (EDS) line profiles, EDS x-ray maps, and WDS analyses across pyrite/coal interfaces in a variety of coals shows unequivocally that formation of pyrite does not alter the organic sulfur contents of the surrounding coal macerals.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5668251
• Report Number(s): LA-UR-82-113; CONF-820409-2; ON: DE82010417
• Resource Relation: Conference: Scanning electron microscopy annual meeting, Anaheim, CA, USA, Apr 1982
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ORGANIC SULFUR COMPOUNDS
ELECTRON MICROSCOPY
PEAT
STRUCTURAL CHEMICAL ANALYSIS
PYRITE
COALIFICATION
MACERALS
SYNTHESIS
CHALCOGENIDES
ENERGY SOURCES
FOSSIL FUELS
FUELS
IRON COMPOUNDS
IRON SULFIDES
MICROSCOPY
MINERALS
ORGANIC COMPOUNDS
ORGANIC MATTER
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
010600* - Coal
Lignite
& Peat- Properties & Composition