Optical indices of the vitrinites of brown coals

Journal Article · Sat Jan 01 00:00:00 EST 1983 · Solid Fuel Chem. (Engl. Transl.); (United States)

OSTI ID:5237904

Dobronravov, V F; Artser, A S; Dunaevskaya, E F

On the basis of an investigation of 46 samples of brown coals of the Eastern regions of the country, an interrelationship has been established between the reflectances measured in air and in immersion. The indices of the refraction and absorption of light have been calculated. A rise in the light absorption index with a decrease in the stage of metamorphism of the coals has been found. The relation obtained permits the refractive index of the vitrinite to be determined from its reflectance in immersion.

• Research Organization: Kutznetsk Scientific Research and Planning Institute of Coal Enrichment
• OSTI ID: 5237904
• Journal Information: Solid Fuel Chem. (Engl. Transl.); (United States), Vol. 7:3; Other Information: PAT-APPL-Translation from Khimiya Tverdogo Topliva; 17: No. 3 (Mar 1983)
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BROWN COAL
OPTICAL PROPERTIES
MACERALS
ABSORPTION
METAMORPHISM
REFLECTIVITY
REFRACTIVITY
SAMPLING
CARBONACEOUS MATERIALS
COAL
ENERGY SOURCES
FOSSIL FUELS
FUELS
MATERIALS
PHYSICAL PROPERTIES
SURFACE PROPERTIES
010600* - Coal
Lignite
& Peat- Properties & Composition