Petrography and mineralogy of pyrometamorphic combustion metamorphic rocks associated with spontaneous oxidation of lignite seams of the Erin Formation, Trinidad

- First mineralogical and petrological study of the pyrometamorphic combustion metamorphic products from Trinidad.
- Evidence of formation of minerals attributed to combustion of maximum temperatures reaching 1100 °C.
- Pyrometamorphic combustion products formed by slow sweltering and cooking of lignite beds in Trinidad.