Vitrinite Reflectance : Why and How

Vitrinite Coal

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Measuring vitrinite reflectance of coals, petroleum source rocks & kerogens to determine their thermal maturity or energy content 

Vitrinite is one of the primary components of coal, petroleum source rocks and  sedimentary kerogens. Vitrinite has a shiny appearance and is derived from the cell-wall material or woody tissue of plants.  Since vitrinite changes predictably with heating (over geological time periods), vitrinite reflectance levels are a reliable measurement of coal, kerogen or petroleum source rock thermal maturity or its value as a source of energy.

The CRAIC CoalPro II™ Vitrinite Reflection Measurement System is a microphotometer designed for the organic petrographic analysis using Standard Test Methodologies ISO 7404-5 and ASTM D2798 and other international methodologies. This microphotometer is configured to measure the reflectance from vitrinite coals, petroleum source rocks & sedimentary kerogens per these protocols. However, it also has a very flexible design. The CRAIC CoalPro™ was developed anticipating the next generation of test protocols as well as tests for fluorescence and the capability of color imaging.

To learn more about vitrinite reflection and microphotometers, select one of the following links: 

Science of microphotometry

Microphotometer Design

Uses of Microphotometers

CRAIC CoalPro II™ Vitrinite Reflection Measurement System