The Takane mine is about 20km northeast of Murakami city, Niigata prefecture. This mine was worked in the wartime as a minor producer of molybdenite.
Uranium is detected from a small clayey veinlet of dark grey materials in the crushed silicified granite, the so-called Kogawa-type granite. This granite has a considerably high radioactivity, and a radioactive anormaly is also found in the basal part of Neogene Tertiary sediments, i. e. in the Tsugawa formation resting unconformably on the granite.
Based on the facts stated above, the Takane area and its vicinity can be favorable for the occurrence of sedimentary type uranium like other areas around the Uetsu massif.