Japan Gold Corp has completed first-pass regional exploration of its 13,286 hectare Ikutahara Gold-Silver Project in northern Hokkaido, Japan. The company also completed historical data compilation and detailed mapping of two advanced Ikutahara prospects, which are the areas surrounding the historic Ryuo gold-silver mine and Akebono gold-silver workings.
Multiple gold-silver and mercury prospects including 15 documented mines and workings are located within the Ikutahara project area and the majority comprise epithermal veins, with other hot spring related features such as hydrothermal breccias and silica sinters.
Six geologists and support teams undertook a nine week field program from October to December 2016, completing prospecting, geological mapping, collecting stream sediment and BLEG drainage samples and rock float and outcrop sampling over the majority of the Ikutahara area.
The Ryuo mine operated before the Second World War and workings were developed on up to six levels on two veins, Jinja and Shouei. A number of peripheral veins were also mined nearby. Workings on the main Jinja vein were developed to approximately 75 metres below the surface before the government imposed mine closure in 1943.
The Metal Mining Agency of Japan (MMAJ) has published underground mapping and sampling results completed at the Ryuo mine during the 1950s, and Japan Gold has compiled this data.
High-grade gold/silver quartz veins were mapped on all four of the lower levels of the Jinja system. Chip-channel samples had been collected at intervals spaced between 0.3 and 4.7 metres along strike of the veins exposed in the roof of the levels and assayed for gold and silver. The published MMAJ data indicates significant high-grade shoots on levels 4, 5 and 6.
These channel samples confirm the potential for discovery of high grade epithermal gold/silver mineralisation at Ryuo.
Japan Gold mapping at Ryuo has identified a 1000 by 400 metre zoned alteration system. No previous modern exploration or drilling has been undertaken in the area and Japan Gold plans to drill at Ryuo during the first half of the year.
Historical underground exploration development commenced on the Akebono vein in the late 1930s but was also terminated by 1943. The known workings consist of two 120 metre long drives and several winzes sunk to a vertical depth of approximately 100 metres. These were developed on a moderate to steeply dipping, 0.5 to 4 metres wide epithermal gold-silver bearing quartz vein.
The main Akebono vein trends ENE-WSW and Japan Gold’s recent prospect mapping has shown that along its strike, banded and bladed textured quartz-chalcedony veins up to 4 metre wide crop out over a 600 metre long NE-SW trend that is open in both directions along trend.
First pass rock samples collected by the Company have returned encouraging gold and silver results up to 20.7 g/t gold and 290 g/t silver from vein float. Detailed mapping will re-commence when the snow clears in April with the objective of delineating the extent of mineralisation.
The spectacular high gold and silver grades reported and vein widths mapped up to 4 metre in width in the field show that the area around the Akebono workings, which has had no modern day exploration, has great potential for further high grade discoveries. Detailed exploration and testing drill targets at Akebono is one of Japan Gold’s priorities for 2017.
Japan Gold’s chairman and CEO John Proust said, “Ryuo and Akebono are two of the 15 historic mines and workings reported within the project area that were mostly mined between the early 1920s to the government imposed closure of gold mines in 1943.
“The scale and gold-silver grade of these epithermal prospects supported by the historical data from underground workings is very encouraging at this early stage of our work and mineralisation appears to be open at depth and along strike.
“Going forward we plan further detailed prospect mapping over priority targets throughout the 2017 field season. We look forward to drill testing both Ryuo and Akebono in 2017.”
Japan Gold Corp is a Canadian mineral exploration company focused solely on gold and copper-gold exploration in Japan. The company has applied for 115 prospecting rights licences in northern Japan for a combined area of 38,375 hectares over nine separate projects.