Geology and mineralisation of the Mewet Vein, Jelai Gold Project ...

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PT GMT Indonesia Mewet Vein : Jelai Gold Project (Mewet Creek) and the collar heights on most of the drill holes were within a few metres of each other in vertical collar position. There is a further requirement to accurately measure the topography in the Mewet vein area and the previously established benchmarks could be utilised for this purpose. 11.4.2 Base of Weathering The base of weathering can be established from the oxidation data from the drill holes in the area. The nature of the mineralisation does not appear to be affected by the base of oxidation, with high grade areas close to the surface on the south end of the vein structure, similar in magnitude to the higher grade intercepts on the north end of the area reviewed at depth, below the surface of oxidation. 11.4.3 Hangingwall and Footwall The hangingwall and footwall of the Mewet Vein was modelled on a section by section basis using the geological logging as a guide to the mineralised envelope defined. It was found that the mineralised segments anastomose within the logged vein structure, occurring near the hangingwall of the vein in some areas or near the footwall in others. Occasionally, mineralisation can occur both in the footwall and the hangingwall, separated by several metres of interburden. In areas, the mineralised intercepts, defined at the 0.50 g/t Au composite boundary, the two coalesce to form a single mineralised vein. A number of small mineralised sections can be found in the hangingwall of the Mewet Lode but the geological correlations were not possible at this time. It is considered that closer spaced drilling will define these hangingwall lodes more clearly and could be included in future models. Mineralised sections in the footwall of the main lode are rare and, in the few examples where they occur, can be explained by reviewing the core logs. For example, in JM022, a series of low –grade mineralised intercepts in the footwall can be attributed to a single narrow (
PT GMT Indonesia Mewet Vein : Jelai Gold Project 11.5 • section 356,500N, below JCM-067 to test the plunging shoot to the north on the vein structure and extending at the same level one section north again to 356,575N below hole number JCM-074. Exploration Target The assessment of data has outlined an exploration target of between 900,000-950,000 tonnes of mineralisation with a gold grade of approximately 3 g/t and an accompanying silver grade of approximately 3 g/t. This target is limited between 356,270 mN to 356,520 mN, approximately 250 metres of strike length of the Mewet Vein and between the surface and the extent of drilling at depth. There remains potential to increase the size of the target by drilling along the strike of the Mewet Vein, both to the north and south. 0065 JCM/GEO/2009.04 Page 37
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Geology and mineralisation of the Mewet Vein, Jelai Gold Project ...

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