Drilling Results and Exploration Update
Gold Mining in Japan
Since the beginning of the Edo period (1601), over 20
Moz of gold have been produced from Japanese gold
mines...the top producers being Hishikari, Sado,
Konomai and Yamagano. All of these mines exploit
high-grade epithermal deposits.
Hishikari mine (Sumitomo Metal Mining Co. Ltd.),
Japan's largest gold mine, has produced approximately
9.0 Moz Au (as of December, 2021) since 1985 at head
grades of approximately 30 gpt Au.
reserves and resources remain.
Sado
Kinzan (Mitsubishi Materials
Considerable
Corporation),
produced 2.51 Moz Au and 74 Moz Ag over a continuous
mine life of 388 years beginning in 1601. Grades
averaged 5.2 gpt Au and 153 gpt Ag.
Konomai mine (Sumitomo Metal Mining Co. Ltd.),
produced 2.35 Moz Au and 38.6 Moz Ag between its
discovery in 1915 and mine closure in 1973.
2023 | Irving Resources
CNX: IRV | OTCQX: IRVRF
Sado
Shikoku
Kyushu
Hishikari
Konomai
Honshu
Hokkaido
Tokyo
A
Kushikino
N
800 km
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