SUMMARY OF GEOLOGY AND MINERALOGY OF THE URANIUM AND THORIUM DEPOSITS IN JAPAN

Technical Report · Sat Oct 31 04:00:00 EST 1959

OSTI ID:4262035

Murakoshi, T; Koseki, K

For a number of years, the occurrences of uranium and thorium minerals known in Japan were limited to those of pegmatitic origin and almost all of them were merely of mineralogical or geochemical interest. At present, various types of uranium and thorium deposits are known in Japan and they include not only those of the above-mentioned types of pegrnatitic origin but also deposits which were considered to be lacking in Japan such as the sedimertary deposits and those associated with metallic ore deposits. All of these new discoveries were made by explorati on and researches carried out during the last two or three years. Although the types of some of the deposits are not yet clarified definitely and further revision may be necessary, the classification and the examples of the uranium and thorium deposits of Japan are as follows: pegmatite deposits; pneumatolytic to hydrothermal deposits; pyrometasomatic deposits; hydrothermal deposits; sedimentary deposits; and placer deposits. The results obtained by geological and mineralogical researches on the main deposits of each type are summarized. (auth)

• Research Organization: Geological Survey of Japan
• NSA Number: NSA-13-006627
• OSTI ID: 4262035
• Report Number(s): A/CONF.15/P/1360
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

DEPOSITS
GASES
GEOLOGY
GEOLOGY AND MINERALOGY
HIGH TEMPERATURE
HYDROTHERMAL STAGE
JAPAN
METALS
METASOMATISM
MINERALS
ORES
PEGMATITES
PROSPECTING
SEDIMENTS
THORIUM ORES
URANIUM MINERALS
URANIUM ORES