Metallurgical coal producer Cokal Ltd has identified more than 35 coal seam outcrops after a month of geological-surface mapping in the company’s newly acquired Tambung Benua Alam Raya (TBAR) project in Central Kalimantan. Cokal owns a 75% interest in the greenfield project, which is adjacent to the company’s Bumi Barito Mineral (BBM) coking coal project.
The TBAR exploration licence covers 18,850 hectares and initial coal analyses have indicated that all coal seams are potentially coking coal.
Cokal officials add that, although mapping has covered only about 25% of the tenement area to date, results are encouraging, with several outcrops measuring between 1.75 metres to 1.85 metres thick.
"These confirm our interpretation of the geology of the basin and we are confident of finding further metallurgical coal in the region,” company officials said in a statement.
Cokal executive director Pat Hanna indicated that laboratory results on the initial outcrop samples confirmed its expectations that the coal seams in TBAR would have premium metallurgical properties. “Some results confirm the outcrops are in fact coking coal with crucible swelling numbers of eight and nine, which is unusual to find when the coking properties are expected to have been oxidized. This indicates that the depth to which Cokal may find fresh premium coking coal could be as little as 5 metres below the surface.
“The initial analysis results of the raw coal samples indicate ranges of properties consistent with a premium coking coal product. The volatile values are typical for coking coals in the Marawai coal basin ranging from 14% to 22%,” he noted, adding that geological mapping of TBAR is progressing with survey completion expected within the next three months.
The next phase of exploration will involve drilling shallow boreholes near the outcrops to confirm the coking properties. Results will provide an initial resource in accordance with Australia’s JORC code.
The project will leverage logistics being developed for the BBM project, using shallow-river barging in the upper Barito River. The road used to take BBM’s coking coal to the barge loading port also passes through the project tenement.