Abstract: Abstract Geochemical and conventional petrographic techniques have been used to characterise variation within and between the Eocene Taupiri and Kupakupa coal seams in New Zealand. Both seams have a macroscopically bright lustre, but the Taupiri is dominated by non-banded coal in contrast to portions of the Kupakupa which contain large (1–3 cm thick) vitrain bands. Microscopically these bands contribute the bulk of the humotelinite (preserved tissue) found in both coals. The Kupakupa seam contains higher proportions (approx. 20%) of humotelin...
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Topics: 
Geochemistry
Mineralogy