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Itomuka mine, Tokoro-gun, Okhotsk Subprefecture (Abashiri Province), Hokkaidō, Japani
Regional Level Types
Itomuka mineMine
Tokoro-gun- not defined -
Okhotsk Subprefecture (Abashiri Province)Subprefecture
HokkaidōPrefecture
JapanCountry

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Latitude & Longitude (WGS84):
43° 40' 59'' North , 143° 10' 0'' East
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Kamikawa5,294 (2017)36.2km


The largest mercury deposit in Japan, now abandoned. Seven major veins, late Miocene(?), cut Miocene propylite (propylitized andesite), and a network of veinlets is disseminated through the overlying tuffaceous sandstone. Ore grade 0.35 to 0.40% Hg. Unusually rich in native mercury, which often dominated over cinnabar.

Regions containing this locality

AsiaContinent
Okhotsk PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: Masutomi Museum specimen, Kyoto
'Chlorite Group'
Reference: Masutomi Museum specimen, Kyoto
Cinnabar
Formula: HgS
Reference: Masutomi Museum specimen, Kyoto; Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy = 北海道大學理學部紀要, 8(2): 175-210
Ferrierite-Mg
Formula: (Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
Reference: Yajima et al (1971) Mineralogical Journal, 6, 343-364.
Marcasite
Formula: FeS2
Reference: Masutomi Museum specimen, Kyoto
Mercury
Formula: Hg
Reference: Masutomi Museum specimen, Kyoto; Yamada, S. (2004) Nihonsan-koubutsu Gojuon-hairetsu Sanchi-ichiranhyou (111 pp.)
Metacinnabar
Formula: HgS
Reference: Masutomi Museum specimen, Kyoto
Pyrite
Formula: FeS2
Reference: Masutomi Museum specimen, Kyoto
Quartz
Formula: SiO2
Reference: Masutomi Museum specimen, Kyoto
Quartz var: Chalcedony
Formula: SiO2
Reference: Masutomi Museum specimen, Kyoto

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Mercury1.AD.05Hg
Group 2 - Sulphides and Sulfosalts
Cinnabar2.CD.15aHgS
Marcasite2.EB.10aFeS2
Metacinnabar2.CB.05aHgS
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 9 - Silicates
Ferrierite-Mg9.GD.50(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Mercury1.1.7.1Hg
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Cinnabar2.8.14.1HgS
Metacinnabar2.8.2.3HgS
AmBnXp, with (m+n):p = 1:2
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Ferrierite-Mg-(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
Quartz
var: Chalcedony
-SiO2

List of minerals for each chemical element

HHydrogen
H Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
CCarbon
C CalciteCaCO3
OOxygen
O QuartzSiO2
O CalciteCaCO3
O Quartz (var: Chalcedony)SiO2
O Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
NaSodium
Na Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
MgMagnesium
Mg Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
AlAluminium
Al Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
SiSilicon
Si QuartzSiO2
Si Quartz (var: Chalcedony)SiO2
Si Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
SSulfur
S CinnabarHgS
S MetacinnabarHgS
S PyriteFeS2
S MarcasiteFeS2
KPotassium
K Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
CaCalcium
Ca CalciteCaCO3
Ca Ferrierite-Mg(Mg,Na2,K2,Ca)3-5Mg[Al5-7Si27.5-31O72] · 18H2O
FeIron
Fe PyriteFeS2
Fe MarcasiteFeS2
HgMercury
Hg MercuryHg
Hg CinnabarHgS
Hg MetacinnabarHgS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Quaternary - Neogene
0 - 23.03 Ma



ID: 3190716
Cenozoic volcanic rocks

Age: Cenozoic (0 - 23.03 Ma)

Lithology: Mafic-intermediate volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Geological Survey of Japan (1960): Geology and Mineral Resources of Japan.
- Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., and Watanabe, Y. (2007): Mineral Resources Map of East Asia. Geological Survey of Japan.

External Links



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