Geology, resource potential and organic petrography of the Neogene coals in the Miri area of Northwest Sarawak, Malaysia

Author : Wan Hasiah Abdullah, Sia Say Gee
Publication : Warta Geologi
Page : 66-71
Volume Number : 48
Year : 2022

Warta Geologi, Vol.
48, No. 2, August 2022, pp. 66–71


Geology, resource
potential and organic petrography of the Neogene coals in the Miri area of
Northwest Sarawak, Malaysia


Wan Hasiah Abdullah1,*, Sia Say Gee2

1Geological Society of Malaysia, c/o Department
of Geology, University of Malaya, 50603 Kuala Lumpur, Malaysia

2Jabatan Mineral dan Geosains Malaysia, Negeri
Johor, Tingkat 9, Menara TH, Jalan Ayer Molek, 80000 Johor Bahru, Johor Darul
Ta’zim, Malaysia

*Corresponding author email address:


Abstract: There are three coal-bearing
geological formations in the Miri area, viz. the Belait Formation, the Lambir
Formation, and the Liang Formation. Of the three coal-bearing geological
formations, only the sub-bituminous B Tutoh coals from the Belait Formation,
with an estimated resource of 203 million tonnes, are
to be of economic potential. The Tutoh coals
are dominated by vitrinite group, especially desmocollinite
. The
sub-bituminous B from the Lambir Formation and the lignite from Liang Formation
are of low economic potential due to the limited area of the hosting


Keywords: Coal resource potential,
organic petrography, Belait Formation, Lambir Formation, Liang Formation



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received 8 August 2022;

Received in
revised form 26 August 2022;

Accepted 29
August 2022

online 30 August 2022


0126-5539; 2682-7549 / Published by the Geological Society of


© 2022 by
the Author(s). This is an open access article distributed under the terms of
the Creative Commons Attribution (CC-BY) License 4.0



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