Extractable metal salts of carboxylic acids in Green River oil shale

The structure and reactivity of a low-sulfur lacustrine oil shale (Colorado U.S.A.) compared with those of a high-sulfur marine oil shale (Julia Creek, Queensland, Australia)

“…Table 3 shows the room-temperature extraction yields for Julia Creek and Colorado oil shales. The yield of THF-solubles on a dmmf basis for Colorado oil shale (4.7 wt.% dmmf) was similar to the benzene-soluble yield of 5.4 wt.% dmmf found for an organic-rich Colorado oil shale from the Mahogany Zone [46], so that it may be taken as typical for Colorado oil shales. The yields for Julia Creek were very small (THF solubles 1.7 wt.% dmmf, CH 2 Cl 2 solubles negligible).…”

Fatty acids in sparry calcite fracture fills and microsparite cement of septarian diagenetic concretions

“…Free diacids were observed in extracts with polar solvent of Green River shale without HCl demineralisation (Haug et al, 1967;Burlingame and Simoneit, 1968). A subsequent study of isolated fatty acid salts from Green River oil shale bitumen reported diacid salts without even carbon predominance in the range C 11 to C 29 (Chong and McKay, 1984). Free diacids were not extracted by nonpolar solvent.…”

Alteration of fossil-bearing shale (Autun, France; Permian), part II: Monitoring artificial and natural ageing by combined use of S and Ca K-edge XANES analysis, Rock-Eval pyrolysis and FTIR analysis

“…The occurrence of carboxylic acids in soil organic matter is often mentioned in the literature, but that of carboxylate salts is much less studied. It was however demonstrated that these salts could be present in lignites Given, 1986, 1987), marine source rock (Liu et al, 2013) and shale (Chong and McKay, 1984). The present study shows that they can also be present in macerals.…”