Oita Group

JP / Ōita

•32.93210, 131.83225View on Map Open in Google Maps

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About this location

Oita Group is a historic mining site in Oita, documented by the USGS Mineral Resources Data System. The mineralization is hosted in Shale, Sandstone. Reported specimens include Calcite, Chalcedony, Cinnabar, Opal, Pyrite, Quartz; logged ore minerals are Cinnabar; gangue is recorded as Calcite, Chalcedony, Opal, Pyrite, Quartz. Production is recorded for 1938 - 1945; workings are underground.

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Found Here

CalciteChalcedonyCinnabarOpalPyriteQuartz

Geology and deposit

Host rock: Shale, Sandstone
Associated rock: Basalt

Ore minerals

Cinnabar

Gangue minerals

CalciteChalcedonyOpalPyriteQuartz

Structure

Faults Which Parallel Bedding Planes

Ore control

Fault Planes, Crush Zones, Bedding Planes

Alteration

Brecciation, Pyrite Dissemination

Mining history

Status: Past Producer
Workings: Underground
Production years: 1938 - 1945

Records and references

Cited references

HORI, S., 1953 , "MERCURY DEPOSITS OF JAPAN", GEOL SUR JAP REPORT NO 154 , P. 114KINOSHITA, K., 1942 , "MERCURY DEPOSITS OF KYUSHU", JAP ASS MIN PET ECO GEOL B. VOL 25 NO. 1 P. 29 - 35KINOSHITA, K., 1942 , "MERCURY DEPOSITS OF KYUSHU", JAP ASS MIN PET ECO GEOL B. VOL 25 NO. 2 P. 66 - 77GEN. HEADQU. SUP. ALL COMMAND, NAT RES. DIV., 1947 , "MERCURY RESOURCES OF JAPAN" REPORT NO. 91GEN HEADQU. SUP COM ALLIES NAT RES DIV, 1947 , REP 91GEN HEADQU. SUP COMM ALL FOR, NAT RES DIV, 1947 , REP. NO. 91

Data: USGS Mineral Resources Data System, record 10040012 — view the source record

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Location on Map

Coordinates: 32.93210, 131.83225

Nearby rockhounding locations

Tsurumi Group — Calcite, CinnabarŌita · 3.1 mi
Wakayama Mine — Chalcedony, CinnabarŌita · 10.7 mi
Tateyasu Mine — CinnabarŌita · 24.7 mi
Sanpo Mine — Calcite, CinnabarŌita · 25.1 mi
Setto — Braunite, CinnabarEhime · 50.5 mi
Yomichi Mine — Cinnabar, PyrolusiteEhime · 55.3 mi

More Calcite locations in Ōita

Aizankei Mine — Calcite, CinnabarHokkaidō
Akamatsu Mine — Calcite, CinnabarTokushima
Chihaya Mine — Calcite, ChalcedonyŌsaka
Chuko Mine — Azurite, CalciteHokkaidō
Dehara Mine — Calcite, CinnabarTokushima
Fuji — Calcite, ChloriteNara

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