Omui mine, Omu Camp, Monbetsu District, Okhotsk Subprefecture, Hokkaidō Prefecture, Japani
| Regional Level Types | |
|---|---|
| Omui mine | Mine |
| Omu Camp | - not defined - |
| Monbetsu District | District |
| Okhotsk Subprefecture | Subprefecture |
| Hokkaidō Prefecture | Prefecture |
| Japan | Country |
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Latitude & Longitude (WGS84):
44° 32' 9'' North , 142° 54' 27'' East
Latitude & Longitude (decimal):
Type:
Deposit first discovered:
1919
Köppen climate type:
Mindat Locality ID:
425944
Long-form identifier:
mindat:1:2:425944:5
GUID (UUID V4):
7ded079e-5cf5-4311-a333-815525685d91
It was discovered in 1919 following earlier placer gold recovery in the area. Mining from 1920 to 1921 yielded 762 metric tons of ore grading 28.5 g/t Au and 562 g/t Ag. From 1925 to 1928 a total of 22,300 metric tons of ore were extracted for a total of ~12,400 oz Au and ~280,000 oz Ag. Minor artisanal mining was conducted in 1933. The major E-W-striking quartz vein at Omui, the so-called Honpi vein, was exploited over a strike length of 120 m from four working levels of a 70 m deep shaft.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Acanthite Formula: Ag2S |
| ⓘ Aguilarite Formula: Ag4SeS |
| ⓘ Gold Formula: Au |
| ⓘ Gold var. Electrum Formula: (Au,Ag) |
| ⓘ 'K Feldspar' |
| ⓘ 'K Feldspar var. Adularia' Formula: KAlSi3O8 |
| ⓘ Polybasite Formula: [Ag6Sb2S7][Ag9CuS4] References: Sterling, Geoff (2023) Personal Communication. Identified by Geoff Sterling: Visual Identification |
| ⓘ Pyrargyrite Formula: Ag3SbS3 |
| ⓘ Quartz Formula: SiO2 |
| ⓘ Quartz var. Chalcedony Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Gold var. Electrum | 1.AA.05 | (Au,Ag) |
| ⓘ | 1.AA.05 | Au | |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Acanthite | 2.BA.35 | Ag2S |
| ⓘ | Aguilarite | 2.BA.55 | Ag4SeS |
| ⓘ | Pyrargyrite | 2.GA.05 | Ag3SbS3 |
| ⓘ | Polybasite | 2.GB.15 | [Ag6Sb2S7][Ag9CuS4] |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Quartz var. Chalcedony | 4.DA.05 | SiO2 |
| ⓘ | 4.DA.05 | SiO2 | |
| Unclassified | |||
| ⓘ | 'K Feldspar var. Adularia' | - | KAlSi3O8 |
| ⓘ | '' | - | |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| O | ⓘ Quartz var. Chalcedony | SiO2 |
| O | ⓘ Quartz | SiO2 |
| Al | Aluminium | |
| Al | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| Si | Silicon | |
| Si | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| Si | ⓘ Quartz var. Chalcedony | SiO2 |
| Si | ⓘ Quartz | SiO2 |
| S | Sulfur | |
| S | ⓘ Acanthite | Ag2S |
| S | ⓘ Aguilarite | Ag4SeS |
| S | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| S | ⓘ Pyrargyrite | Ag3SbS3 |
| K | Potassium | |
| K | ⓘ K Feldspar var. Adularia | KAlSi3O8 |
| Cu | Copper | |
| Cu | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Se | Selenium | |
| Se | ⓘ Aguilarite | Ag4SeS |
| Ag | Silver | |
| Ag | ⓘ Acanthite | Ag2S |
| Ag | ⓘ Aguilarite | Ag4SeS |
| Ag | ⓘ Gold var. Electrum | (Au,Ag) |
| Ag | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Ag | ⓘ Pyrargyrite | Ag3SbS3 |
| Sb | Antimony | |
| Sb | ⓘ Polybasite | [Ag6Sb2S7][Ag9CuS4] |
| Sb | ⓘ Pyrargyrite | Ag3SbS3 |
| Au | Gold | |
| Au | ⓘ Gold var. Electrum | (Au,Ag) |
| Au | ⓘ Gold | Au |
Other Regions, Features and Areas containing this locality
AsiaContinent
Okhotsk PlateTectonic Plate
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References
