Gulf unveils study on manganese potential in RI
Wednesday, October 14 2015 - 04:48 AM WIB
ASX-listed Gulf Manganese Corporation Limited (GMC) unveiled Tuesday a review of a study on manganese prospects and deposits in Indonesia conducted for the company by the world renowned SRK Geological Consulting group.
GMC said in a statement that the study was a geological assessment of manganese (Mn) deposits in Indonesia that could supply ores matching the specific requirements of the proposed ferromanganese alloy smelter business of the company at Kupang, West Timor.
It was undertaken as a desktop review, using publicly available data, SRK's in-house project database and subscription based mineral industry databases, and covers key criteria including geology, deposit style and potential grade and tonnage (although the work is restricted due to the limited public domain data in respect to grade and tonnage information), GMC explained.
SRK concluded that there is a potential extractable Mn mineralization of 29 Mt for production IUPs and 114 Mt for exploration and production IUPs combined as follows:
Total Tonnage of prospective (Mn) stratigraphy (covered by IUPs*), West Timor
| Parameter | Mine/Production | Exploration | Total |
| Total Area of IUPs (m2 ) | 374,000,0000 | 1,140,000,000 | 1,514,000,000 |
| No. of IUPs Intersecting Formation | 47 | 135 | 182 |
| Average Area of IUP (m2 ) | 7,960,000 | 8,440,000 | 8,320,000 |
| Average Strike length (m) | 2,116 | 2,179 | 2,163 |
| Total Productive Strike Length (m) | 99,437 | 294,226 | 393,695 |
| Prospectivity in IUPs (m3 ) | 8,929,288 | 26,480,311 | 35,432,550 |
| Total Tonnage(million tonnes) | 29 | 85 | 114 |
*IUP (izin usaha pertambangan) mining/exploration licence |
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Deputy Chairman and Exploration Director, Peter Williams, commented: ?Over a 10 year period the total manganese ore requirement will be some 3.6 million tons which means based on the SRK report the manganese endowment of West Timor alone more than provides many years of production feed requirements.
These tonnage values do not take into account other Indonesian locations such as Romang, Flores, Rote, Sumbawa, Sulawesi and Kalimantan islands nor the possibility of drawing ore from Northern Australia due to the closeness of proximity.?
The parameters and assumptions for the estimation referred to in West Timor are set out in the attached executive summary, and it is important for the reader to review that summary to understand the limits of the review and the sources relied on.
Editing by Reiner Simanjuntak