Spontaneous combustibility character of the Talcher coals has been measured in terms of peroxy complex and crossing point temperature. Coal samples collected from the two horizons i.e. Karharbari Formation and Barakar Formation were separately studied and the values measured for the aforesaid parameters were recorded. It was found that the coals of this coalfield are highly prone to spontaneous combustion but the coals of the Karharbari Formation show less proneness compared to Barakar Formation.  Keywords: Peroxy complex; Crossing point temperature; Spontaneous combustion; Talcher coalfield; Orissa. © 2009 JSR Publications. ISSN: 2070-0237(Print); 2037-0245 (Online). All rights reserved. DOI: 10.3329/jsr.v1i1.1696