| Deposit ID | 10231800 |
|---|---|
| MAS/MILS ID | 5880020006 |
| Record type | Site |
| Current site name | Uchinotai Kosaka |
| Alternate or previous names | Kosaka Mine, Uchinotai Deposit |
| Point of reference | Ore Body |
|---|---|
| Geographic coordinates: | 140.7483, 40.32847 (WGS84) |
| Elevation | 200 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Akita(province)
Japan(country)
Asia(continent)
Land(continent)
| Country | State |
|---|---|
| Japan | Akita |
| Commodity | Importance |
|---|---|
| Copper | Primary |
| Gold | Secondary |
| Lead | Secondary |
| Silver | Secondary |
| Zinc Critical | Primary |
| Materials | Type of material |
|---|---|
| Barite | Unknown |
| Chalcopyrite | Unknown |
| Galena | Unknown |
| Pyrite | Unknown |
| Sphalerite | Unknown |
| Tetrahedrite | Unknown |
| Ore Body (1) | 140.7483, 40.32847 |
|---|
| |||||||||||||||||||||||
| Operation type | Underground |
|---|---|
| Development status | Producer |
| Commodity type | Metallic |
| Significant | Yes |
| Discovery year | 1959 |
| Mining method | Filled Stopes - Horiz Cut and Fill W/Tailings |
| Year of first production | 1962 |
| Milling method | Flotation |
| District name | Akita Prefecture, Japan |
|---|
| Type | Owner-Operator |
|---|---|
| Owner | Uchinotai Mining Comp., Ltd. (Sub Of Dowa) |
| Interest | 100 |
| Home office | Japan |
| Year | 1991 |
| Type | Owner-Operator |
|---|---|
| Owner | Dowa Mining Corp. Ltd. |
| Interest | 100 |
| Home office | Japan |
| Year | 1991 |
| Type of workings | Underground | ||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 5880020006 |
E&MJ MINING DIRECTORY, 1991
ARAKELYANTS, M.M., ET AL. "AGE OF WALL ROCK ALTERATION AND
ORE DEPOSITIONS IN THE UCHINOTAI AND THE HANAOKA PYRITE
DEPOSIT, JAPAN." AKADEMIIA NAUK SSSR: PROCEEDINGS
GEOLOGICAL SCIENCES SECTIONS. VOL.209. 1972. PP.158-160
DOWA MINING CO LTD. "THE KOSAKA MINE." APRIL 1, 1979.
ENGINEERING AND MINING JOURNAL DIRECTORY OF MINES, 1975.
HORIKOSH, EI. AND TAKEO SATO. "VOLCANIC ACTIVITY AND ORE
DEPOSITION IN THE KOSAKA MINE." MINERAL DEPOSITS OF
VOLCANIC AFINITY: KUROKO DEPOSITS. PP.181-195.
MINING AND METALLURGICAL INSTITUTE OF JAPAN. "KUROKO ORES IN
AKITAKEN. KOSAKA MINE" JOINT MEETING MMIJ-AIME, 1972.
TOKOYO. MAY 24-27. PP.35-48.
MINING MAGAZINE. SEPT. 1976. VOL.133. NO.9 P.245.
OSHIMA, TAKAYOSHI, ET AL. "GEOLOGY OF KUROKO DEPOSITS."
MINING GEOLOGY SPECIAL ISSUE NO.6, 1974. SOCIETY OF
MINING GEOLOGISTS OF JAPAN. PP.89-100.
SATO, TAKEO, AND YOSHIHIKO SHIMAZAKI. "VAESITE FROM THE
UCHINOTAI DEPOSITS, KOSAKA, JAPAN." MINERALOGICAL
JOURNAL. VOL.7. NO.5. OCT. 1975. PP.431-437.
SATO, TAKEO. "PHYSIOCHEMICAL ENVIRONMENTS OF KUROKO
MINERALIZATION AT UCHINOTAI DEPOSIT OF KOSAKA MINE,
AKITA PREFECTURE." SOCIETY OF MINING GEOLOGY OF JAPAN.
SPECIAL ISSUE NO.2. 1971. PP.137-144.
| Subject category | Comment text |
|---|---|
| Deposit | THE KOSAKA MINE CONSISTS OF THREE DEPOSITS, THE MOTOYAMA, THE UCHINOTAI, AND THE UNAMUKI. TE MOTOYAMA DEPOSIT WAS MINED OPEN PIT AND UNDERGROUND BEGINNING IN 1898 AND HAS BEEN MINED OUT TO A .3% COPPER CUTOFF. CURRENT MINING PRACTISE IS UNDERGROUND, BY A MODIFIED UNDERHAND CROSS CUT METHOD, IN THE UCHINOTAI AND UWAMUKI DEPOSITS ONLY. WHITE RHYOLITE OCCURS AS DOMES IN THE TUFF BRECCIA OF THE UPPER UWAMUKI AND SERVES AS THE SOURCE OF THE ORE DEPOSITS. THE ORES ARE TYPICAL OF THE NORTHERN JAPANESE KUROKO DEPOSITS. DIMENSIONS OF THE DEPOSITS ARE AS FOLLOWS: UCHINOTAI (WESTERN): 400 M LONG 380 M WIDE 95 M THICK UCHINOTAI (EASTERN): 450 M LONG 380 M WIDE 100 M THICK UWAMUKI (FIRST): 450 M LONG 100 M WIDE UWAMUKI (SECOND): 100 M LONG 100 M WIDE UWAMUKI (FOURTH); 300 M LONG 100 M WIDE 150 M THICK |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 17-FEB-95 | Unknown | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.