Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Matsuiwa mine (Kohoku mine), Kesennuma City, Miyagi Prefecture, Japani
Regional Level Types
Matsuiwa mine (Kohoku mine)Mine
Kesennuma CityCity
Miyagi PrefecturePrefecture
JapanCountry

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Latitude & Longitude (WGS84):
38° 58' 0'' North , 141° 31' 10'' East
Latitude & Longitude (decimal):
38.96667,141.51944
GRN:
N26E80
Type:
Mine
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Ōfunato35,418 (2017)20.6km
Ichinoseki62,970 (2017)33.8km
Mizusawa61,281 (2017)38.1km
Tōno26,781 (2017)38.9km
Kamaishi43,107 (2017)45.7km
Mindat Locality ID:
66901
Long-form identifier:
mindat:1:2:66901:9
GUID (UUID V4):
0


Arsenic and copper mine (arsenopyrite was the main ore mineral), started in 1949 and closed in 1974. Mesothermal sulphide veins hosted in early Cretaceous altered andesite and pyroclastics. During the uranium rush in the 1950s, the Matsuiwa mine's ores were also extensively researched because of their small uranium content, maximum 1.4% U3O8, although the average was considerably less.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Cobaltite
Formula: CoAsS
ⓘ Hematite
Formula: Fe2O3
ⓘ 'Limonite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Molybdenite
Formula: MoS2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Scheelite
Formula: Ca(WO4)
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ 'Siderogel'
Formula: ~FeO(OH) · nH2O
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
ⓘ Uraninite
Formula: UO2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
ⓘCobaltite2.EB.25CoAsS
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘUraninite4.DL.05UO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘScheelite7.GA.05Ca(WO4)
Group 9 - Silicates
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified
ⓘ'Chlorite Group'-
ⓘ'Limonite'-
ⓘ'Siderogel'-~FeO(OH) · nH2O
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ Siderogel~FeO(OH) · nH2O
BBoron
Bⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
OOxygen
Oⓘ HematiteFe2O3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ QuartzSiO2
Oⓘ ScheeliteCa(WO4)
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Siderogel~FeO(OH) · nH2O
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ UraniniteUO2
NaSodium
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Siⓘ QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ CobaltiteCoAsS
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
CaCalcium
Caⓘ ScheeliteCa(WO4)
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ ChalcopyriteCuFeS2
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feⓘ Siderogel~FeO(OH) · nH2O
CoCobalt
Coⓘ CobaltiteCoAsS
CuCopper
Cuⓘ ChalcopyriteCuFeS2
AsArsenic
Asⓘ ArsenopyriteFeAsS
Asⓘ CobaltiteCoAsS
MoMolybdenum
Moⓘ MolybdeniteMoS2
WTungsten
Wⓘ ScheeliteCa(WO4)
UUranium
Uⓘ UraniniteUO2

Other Regions, Features and Areas containing this locality

AsiaContinent
Eurasian Plate
Japan
Okhotsk PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., Watanabe, Y. (2007) Mineral Resources Map of East Asia, Geological Survey of Japan.
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