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Ohkueyama (Okueyama), Nobeoka City, Miyazaki Prefecture, Japani
Regional Level Types
Ohkueyama (Okueyama)Volcano
Nobeoka CityCity
Miyazaki PrefecturePrefecture
JapanCountry

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Latitude & Longitude (WGS84):
32° 44' 17'' North , 131° 30' 45'' East
Latitude & Longitude (decimal):
32.73826,131.51252
GeoHash:
G#: wvvd0xu6p
GRN:
N22E80
Type:
Volcano
Age:
14 Ma
Geologic Time:
Miocene
Reference for age:
Takahashi, M. (1986). Anatomy of a middle Miocene Valles-type caldera cluster: Geology of the Okueyama volcano-plutonic complex, southwest Japan. Journal of volcanology and geothermal research, 29(1-4), 33-70.
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Nobeoka121,949 (2017)22.5km
Takedamachi16,361 (2017)27.5km
Saiki49,065 (2017)43.2km
Aso27,978 (2017)46.0km
Tsukumiura21,658 (2017)50.1km
Mindat Locality ID:
144656
Long-form identifier:
mindat:1:2:144656:5
GUID (UUID V4):
6c8b1af6-603d-4bf2-8db4-a9486cd95271


A mountain in northern Miyazaki. Complex geology including volcanic rocks, Miocene plutonic intrusions, caldera, ring dykes.

Mount Ōkueyama (大崩山), also known as Mount Ōkue, is a volcanic mountain on the Japanese island of Kyushu. Part of an ancient volcanic formation known as the Okueyama Volcano-plutonic Complex, Mount Ōkueyama (and possibly several nearby volcanoes) experienced a massive eruption ~13.7 million years before present (13.7 Ma); it has been postulated that this eruption measured 8 on the Volcanic Explosivity Index, making the Ōkueyama eruption larger than any eruption in recorded history. The mountain is now considered to be extinct.

In 1990, the area around the mountain was designated a Forest Ecosystem Reserve, and in 2017 Mount Ōkueyama was declared part of a UNESCO biosphere reserve, the Sobo, Katamuki and Okue Biosphere Reserve.

The area is managed by the Forestry Agency of Japan.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

11 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Description: 30% rossmannite molecule.
ⓘ 'Feldspar Group'
ⓘ Fergusonite-(Y)
Formula: YNbO4
ⓘ Gadolinite-(Y)
Formula: Y2Fe2+Be2Si2O10
ⓘ Hambergite
Formula: Be2(BO3)(OH)
ⓘ Hellandite-(Y)
Formula: (Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ 'Hypersthene'
Formula: (Mg,Fe)SiO3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ 'K Feldspar'
ⓘ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ 'Orthopyroxene Subgroup'
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
ⓘ 'Yftisite-(Y)'
Formula: (Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
ⓘ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrrhotite2.CC.10Fe1-xS
Group 4 - Oxides and Hydroxides
ⓘ'Microlite Group'4.00.A2-mTa2X6-wZ-n
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
Group 6 - Borates
ⓘHambergite6.AB.05Be2(BO3)(OH)
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘFergusonite-(Y)7.GA.05YNbO4
Group 9 - Silicates
ⓘZircon9.AD.30Zr(SiO4)
ⓘ'Yftisite-(Y)'9.AG.25(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
ⓘGadolinite-(Y)9.AJ.20Y2Fe2+Be2Si2O10
ⓘElbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘHellandite-(Y)9.DK.20(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'K Feldspar'-
ⓘ'Hornblende Root Name Group'-◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
ⓘ'Hypersthene'-(Mg,Fe)SiO3
ⓘ'Feldspar Group'-
ⓘ'Orthopyroxene Subgroup'-

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ HambergiteBe2(BO3)(OH)
Hⓘ Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
Hⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
LiLithium
Liⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Beⓘ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Beⓘ HambergiteBe2(BO3)(OH)
BBoron
Bⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ HambergiteBe2(BO3)(OH)
Bⓘ Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
Bⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
OOxygen
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Fergusonite-(Y)YNbO4
Oⓘ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Oⓘ HambergiteBe2(BO3)(OH)
Oⓘ Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
Oⓘ Hypersthene(Mg,Fe)SiO3
Oⓘ IlmeniteFe2+TiO3
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
Oⓘ ZirconZr(SiO4)
Oⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Oⓘ Pyroxene GroupADSi2O6
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
Fⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
NaSodium
Naⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ Hypersthene(Mg,Fe)SiO3
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Siⓘ Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
Siⓘ Hypersthene(Mg,Fe)SiO3
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
Siⓘ ZirconZr(SiO4)
Siⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
Siⓘ Pyroxene GroupADSi2O6
SSulfur
Sⓘ PyrrhotiteFe1-xS
ClChlorine
Clⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
Caⓘ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
FeIron
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Feⓘ Hypersthene(Mg,Fe)SiO3
Feⓘ IlmeniteFe2+TiO3
Feⓘ PyrrhotiteFe1-xS
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
YYttrium
Yⓘ Fergusonite-(Y)YNbO4
Yⓘ Gadolinite-(Y)Y2Fe2+Be2Si2O10
Yⓘ Hellandite-(Y)(Ca,REE)4Y2Al◻2(B4Si4O22) (OH)2
Yⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
ZrZirconium
Zrⓘ ZirconZr(SiO4)
NbNiobium
Nbⓘ Fergusonite-(Y)YNbO4
SnTin
Snⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
DyDysprosium
Dyⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
ErErbium
Erⓘ Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
TaTantalum
Taⓘ Microlite GroupA2-mTa2X6-wZ-n

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Mount_%C5%8Ckueyama
Wikidata ID:Q11435081

Localities in this Region

Japan

Other Regions, Features and Areas containing this locality

Amur PlateTectonic Plate
AsiaContinent

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

Takahashi, M. (1986) Anatomy of a middle Miocene Valles-type caldera cluster: Geology of the Okueyama volcano-plutonic complex, southwest Japan. Journal of volcanology and geothermal research, 29(1-4), 33-70.
Ishihara, S. (2010) Chemical compositions of the Miocene granitoids of the Okueyama, Hoei mine and Takakumayama plutons, Outer Zone of SW Japan. Bulletin of the Geological Survey of Japan, 61(1-2), 17-38.
Yuguchi, T., Miyazoe, T., & Nishiyama, T. (2011) Contact metamorphism of a Cretaceous accretionary prism by the 14 Ma Okueyama granite, a single post-kinematic pluton in Central Kyushu, Japan: SVD analysis of metamorphic reactions and thermal release. American Mineralogist, 96(2-3), 308-318.
TAKAHASHI, M. (2014). Subsurface Structure of Miocene Large-scale Caldera Cluster: Illustrated Descriptions of Geology of the Okueyama Volcano-plutonic Complex, Southwest Japan. 日本大学文理学部自然科学研究所研究紀要. 地球システム科学= Proceedings of the Institute of Natural Sciences Nihon University, (49), 197-230.
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