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USGS · 70011656

A rapid method for concentrating sedimentary organic matter for vitrinite reflectance analysis

C.E. Barker
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Abstract

The tecnique discussed in this paper utilizes crushing, high-speed blending, and ultrasonic treatment to mechanically disaggregate rock and release the sedimentary organic matter (OM) in a suitable heavy liquid. This new method can provide freeze-dried concentrated OM in approximately 8 to 24 hours (longer time is necessary for removing carbonate). Under optimal conditions, it is possible to concentrate the OM and prepare a hardened epoxy microscope slide in about 24 hours. Subsequent grinding, polishing, and drying allows microscopic examination of the organic concentrate the next day.

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C.E. Barker. 1982. A rapid method for concentrating sedimentary organic matter for vitrinite reflectance analysis. https://doi.org/10.1306/212f7fef-2b24-11d7-8648000102c1865d

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