Association of major, minor and trace inorganic elements with lignites. II. Minerals, and major and minor element profiles, in four seams
Inorganic elements in lignites may be present in carboxylate salts and organic coordination complexes as well as in discrete mineral phases. Moreover, organic matter can alter mineral phases in peats. The objectives of this study are to investigate how a number of important elements are held in some typical lignites and hence to document organic/inorganic interactions of various kinds. Accordingly, detailed profiles of the distribution of 10 major and minor elements through four lignite seams have been made, including roof and floor rocks and any mineral partings. Elements extractable by 1.0 N ammonium acetate and by 1.0 N HCl and in the insoluble residue have been analyzed by plasma arc emission and atomic absorption spectrometry. Mineral phases were analyzed by x-ray diffraction and infrared spectrometry. Substantial proportions of the Ca, Mg, Sr, Ba, Na and Mn were extractable from the organic zones, but not the inorganic, by ammonium acetate, and were inferred to have been present in the organic matter as carboxylate salts. Part of the Mn was in the organic matter either complexed or dispersed as acid-soluble mineral. Acid-soluble Al and Ti were found to be quite abundant in the organic layers but not in the roof and floor; they probably are complexed with the organic matter. The principal conclusion is that the organic matter in peat and lignites has a profound influence, in many ways, on the suite of inorganic materials with which it becomes associated.
- Research Organization:
- Pennsylvania State Univ., University Park (USA)
- OSTI ID:
- 6938532
- Journal Information:
- Geochim. Cosmochim. Acta; (United States), Vol. 51:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LIGNITE
GEOCHEMISTRY
MINERALOGY
QUANTITATIVE CHEMICAL ANALYSIS
ABSORPTION SPECTROSCOPY
BARIUM
CALCIUM
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL SEAMS
EMISSION SPECTROSCOPY
INFRARED SPECTRA
INORGANIC COMPOUNDS
MAGNESIUM
MANGANESE
ORGANIC COMPOUNDS
POTASSIUM
SODIUM
STRONTIUM
TITANIUM
TRACE AMOUNTS
X-RAY DIFFRACTION
ALKALI METALS
ALKALINE EARTH METALS
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
CHEMISTRY
COAL
COAL DEPOSITS
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
KINETICS
MATERIALS
METALS
MINERAL RESOURCES
REACTION KINETICS
RESOURCES
SCATTERING
SPECTRA
SPECTROSCOPY
TRANSITION ELEMENTS
580400* - Geochemistry- (-1989)
580300 - Mineralogy
Petrology
& Rock Mechanics- (-1989)