Chemical composition of Antrim shale in the Michigan basin
During the period between March 1977 and July 1980 core samples from 28 different wells at various locations in the Antrim shale deposit in the Michigan Basin were analyzed for Al, SiO/sub 2/, Fe, Mg, Ca, Na, S, Pb, Hg, Ba, Sb, Sn, Cd, Ag, Mo, Sr, Br, As, Zn, Cu, Ni, Co, Mn, Cr, V, Sc, Cl, P, F, B, Be, and Li. The geochemical analysis revealed that the sulfur content of the shale varied proportionately with that of carbon. On the other hand, calcium values vary inversely with organic carbon (lowest calcite in shale with highest organic carbon). Iron values do not vary greatly within a core and show no tendency to follow organic carbon or sulfur. It seems that the relationships that exist between the chemical species are controlled by the geological events that resulted in the formation of the shale. The kerogen was found to be a crosslinked polymeric structure consisting of roughly equal amounts of aromatic and aliphatic carbons. Functional groups are few, mainly hydroxy and olefinic double bonds. The bitumen (toluene extractable material) was fractionated and the fractions identified. The paraffins in the samples had the same constituents in differing concentrations while the aromatic fractions appear to have significant differences in composition. The distribution of the n-alkanes indicates the shale is more mature than the Green River shales. The amount of vanadyl porphyrin is greater than the amount of nickel and the ratio increases with depth. The concentration of petroporphyrins ranged from one-tenth to one-third the amount extracted from western oil shales.
- Research Organization:
- Michigan Technological Univ., Houghton (USA). Dept. of Chemistry and Chemical Engineering; Dow Chemical Co., Midland, MI (USA)
- DOE Contract Number:
- AC20-76LC10153
- OSTI ID:
- 5117229
- Report Number(s):
- FE-2346-89
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
58 GEOSCIENCES
BITUMENS
STRUCTURAL CHEMICAL ANALYSIS
KEROGEN
MICHIGAN
GEOCHEMICAL SURVEYS
OIL SHALE DEPOSITS
CHEMICAL COMPOSITION
ABSORPTION SPECTROSCOPY
ALKANES
ALUMINIUM
ANTIMONY
BARIUM
BROMINE
CADMIUM
CALCIUM
CORRELATIONS
DRILL CORES
EXPERIMENTAL DATA
EXPLORATION
FLUORESCENCE
IRON
LEAD
MAGNESIUM
MERCURY
MOLYBDENUM
OIL SHALES
PORPHYRINS
QUANTITY RATIO
SILICON OXIDES
SILVER
SODIUM
STRONTIUM
SULFUR
TIN
ALKALI METALS
ALKALINE EARTH METALS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHALCOGENIDES
DATA
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
GREAT LAKES REGION
HALOGENS
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
INFORMATION
LUMINESCENCE
MATERIALS
METALS
MINERAL RESOURCES
NONMETALS
NORTH AMERICA
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC MATTER
ORGANIC NITROGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METALS
RESOURCES
SILICON COMPOUNDS
SPECTROSCOPY
SURVEYS
TAR
TRANSITION ELEMENTS
USA
040500* - Oil Shales & Tar Sands- Properties & Composition
580400 - Geochemistry- (-1989)