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Abstract:

Occurrences of 2.0 Ga, mature organic material from the Lake Onega area, NW Russia, constitute one of the most remarkable accumulations of organic carbon from the Paleoproterozoic. The deposit occurs in a 1000-m sedimentary-volcanic succession developed over a...

Abstract:

Ion exchange and sorption on shungite are studied. The results demonstrate that this mineral is capable of sorbing both inorganic cations and anions. Cation exchange predominates in alkaline solutions, and anion exchange, in acidified solutions. Organic acids...

Abstract:

The presence of low concentrations of fullerenes has been reported from numerous terrestrial and meteoritic sources (Buseck, 2002). In a recent paper, Mossman et al. (2003) present mass spectra of carbonaceous substances using laser desorption ionization (LDI)...

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