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Satsuma-Ioujima (Satsuma-Iwojima; Iou island), Mishima village, Kagoshima District, Kagoshima Prefecture, Japani
Regional Level Types
Satsuma-Ioujima (Satsuma-Iwojima; Iou island)Island
Mishima villageVillage
Kagoshima DistrictDistrict
Kagoshima PrefecturePrefecture
JapanCountry

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PhotosMapsSearch
Area:
12 km2
Type:
Mindat Locality ID:
66903
Long-form identifier:
mindat:1:2:66903:7
GUID (UUID V4):
3544aeba-6f14-4e8f-afdf-384e3c683b2b
Other Languages:
French:
Iōjima, Mishima, district de Kagoshima, Kagoshima, Japon
Italian:
Iōjima, Mishima, Distretto di Kagoshima, prefettura di Kagoshima, Giappone
Japanese:
硫黄島, 三島村, 鹿児島郡, 鹿児島県, 日本
Russian:
остров Ио, Мисима, Округ Кагошима, Кагосима, Япония
Simplified Chinese:
硫磺島, 三島村, 鹿兒島郡, 鹿儿岛县, 日本
Spanish:
Iōjima, Mishima, Distrito de Kagoshima, prefectura de Kagoshima, Japón
Bengali:
ইয়োজিমা , কাগোশিমা প্রশাসনিক অঞ্চল, জাপান
Cebuano:
Iō-jima , Mishima Mura, Kagoshima-gun, Kagoshima-ken, Hapon
Czech:
Iódžima, Prefektura Kagošima, Japonsko
Dutch:
Iōjima, Mishima, Kagoshima District, Kagoshima, Japan
Swedish:
Io-jima, Mishima, Kagoshima prefektur, Japan
Traditional Chinese:
硫磺島, 三島村, 鹿兒島郡, 鹿兒島縣, 日本
Ukrainian:
Іодзіма , Місіма, Префектура Каґошіма, Японія


Small volcanic island with very high temperature fumaroles (up to 945 °C, Matsuo et al. 1974). Rhyolite leached out by acid fumaroles was mined for silica (up to 97% SiO2). Fumarole gases here have the highest content of molybdenum vapour (1 ppm) and gold vapour (32 ppb) of any volcano (Hedenquist et al. 1994).

(Note: This is NOT the same Iwo-jima that became famous in WW2 - See under Tokyo Prefecture.)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

43 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:

Aegirine
Formula: NaFe3+Si2O6
Description: Green to dark-green elongated, sometimes acicular crystals of good luster and well-developed crystal tips. Common in high-temperature fumaroles in the vicinity of halite crystals, in the hotter, central parts of the fumaroles.
Albite
Formula: Na(AlSi3O8)
Albite var. Anorthoclase
Formula: (Na,K)AlSi3O8
Alunite
Formula: KAl3(SO4)2(OH)6
Anatase
Formula: TiO2
Description: Occurs in white clays around low-temperature fumaroles. The presence of this mineral is only known from its rather strong signal in Raman spectroscopy. Associated with cristobalite and opal.
Anglesite
Formula: PbSO4
Anhydrite
Formula: CaSO4
Description: Furs of millimeter-sized white elongated crystals in crevices of a altered tephra. Associated with opal.
Aphthitalite
Formula: (K,Na)3Na(SO4)2
Habit: Massive crusts.
Colour: Gray to black.
Description: Solid gray to black crusts, water soluble. The dark color may be caused by finely dispersed molybdenite. Occurs in a zone where the bulk of the metal oxide and sulfide sublimates get deposited. Raman analysis of a black matrix with embedded tugarinovite crystals shows a curve that is a superposition of a molybdenite and aphthitalite patterns. Raman analysis done by Günter Frenz.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
'Buserite'
Formula: Na4Mn14O27 · 21H2O
Cassiterite
Formula: SnO2
Challacolloite
Formula: KPb2Cl5
'Clinopyroxene Subgroup'
Colour: green
Description: Green euhedral elongated crystals inside matrix of crumbly silicified rocks around high-temperature fumaroles. SXRD by Uwe Kolitsch, NHM Vienna. SXRD: C mon, 9.72, 8.89, 5.30, 106.6 Large diopside component.
Clinosulphur
Formula: S8
'Copiapite Group'
Colour: olive-green
Description: Olive-green pustules on reddish, crumbly rocks at the surface of high-temperature fumaroles. Raman analysis by Günter Frenz.
'Coquimbite Group'
Description: Sub-millimeter sized, yellow-white to white pustules, associated with copiapite at high-temperature fumaroles. Perhaps not formed as a sublimate but recrystallized from watery solutions of dissolved sublimates.
Cotunnite
Formula: PbCl2
Cristobalite
Formula: SiO2
Fayalite
Formula: Fe2+2SiO4
'Fayalite-Forsterite Series'
Description: Grains in Inamuradake scoria.
Ferberite
Formula: FeWO4
Ferrihydrite
Formula: Fe3+10O14(OH)2
Ferrosilite
Formula: Fe2+2Si2O6
'Garnet Group'
Formula: X3Z2(SiO4)3
Habit: Equant habit, typical, well-developed garnet crystals. Rhombic dodecahedra {110}, sometimes modified by {211}.
Colour: Orange, orange-yellow, green-brown.
Description: Small orange, yellow-orange and green-brown clear crystals with good vitreous luster. Well-developed and typical garnet-like crystal-shape with rhombic dodecahedra {110}, sometimes modified by {211}. Identified by Raman spectroscopy. Crystals occur in small groups inside high-temperature fumaroles associated with green pyroxenes. They can be seen in light-colored zones without sulfide and metal oxide sublimates. Raman analysis by Günter Frenz.
Goethite
Formula: α-Fe3+O(OH)
Gypsum
Formula: CaSO4 · 2H2O
Halite
Formula: NaCl
Colour: white, black, blueish, brown
Description: Occurs as cubes and glass-like dense crusts in high temperature fumaroles (500 - 750°C) inside Iōdake crater. Crusts are often colored black by magnetite and other metal oxides, but will turn white when cooled to ambient temperatures.
Hematite
Formula: Fe2O3
Hydroniumjarosite
Formula: (H3O)Fe3+3(SO4)2(OH)6
'Hypersthene'
Formula: (Mg,Fe)SiO3
Ilmenite
Formula: Fe2+TiO3
Description: Present in small amounts in Iodake rhyolite.
Ilsemannite
Formula: Mo3O8 · nH2O
Jarosite
Formula: KFe3+3(SO4)2(OH)6
Kaolinite
Formula: Al2(Si2O5)(OH)4
'Limonite'
Magnetite
Formula: Fe2+Fe3+2O4
Description: Small dark grey octahedra with metallic luster, magnetic, in small cavities in grey-green altered volcanic rock. Also as sublimate forming small octahedra in hight-temperature fumaroles inside the crater.
Molybdenite
Formula: MoS2
Molybdite
Formula: MoO3
Opal
Formula: SiO2 · nH2O
Localities: Reported from at least 7 localities in this region.
Opal var. Hyalite
Formula: SiO2 · nH2O
Description: Hyalite crusts, mostly white, sometimes shiny and clear, typical botryoidal hyalite. In Inamuradake scoria.
Opal var. Opal-AG
Formula: SiO2 · nH2O
Description: colorless crust
Palmierite
Formula: K2Pb(SO4)2
Pyrite
Formula: FeS2
Pyrrhotite
Formula: Fe1-xS
Description: Present in small amounts as tiny phenocrysts and globules in Iodake dacites and rhyolites.
Quartz
Formula: SiO2
Roedderite
Formula: K(◻Na)Mg2Mg3[Si12O30]
Habit: complex crystals in parallel growth
Colour: light blue to dark bluish green
Sassolite
Formula: H3BO3
'Siderogel'
Formula: ~FeO(OH) · nH2O
Sphalerite
Formula: ZnS
'Sulfurite'
Formula: S
Description: Small solidified sulfur flows (a few centimeters in length) of yellow, yellow-brown to orange color, close to fumaroles.
Sulphur
Formula: S8
Localities: Reported from at least 8 localities in this region.
Habit: Mostly {111}, well crystallized, but rarely modified by other crystallographic forms, often hopper shaped. Fragile needles and blades of composite crystals of up to 4cm in fumaroles.
Colour: Sulphur on the outer slopes of the volcano is of typical yellow color, inside the crater orange sulphur can occasionally be found.
Description: Forming chimneys of low temperature fumaroles. Large deposits of sulfur in fumarole fields at the slopes of Iōdake volcano, often hidden under a grey-green crust. Crystals in cavities of altered rocks and clay deposits around fumarole fields. As stalactites in low-temperature fumaroles. As pseudomorphs after feldspar phenocrysts in leached volcanic rocks. Sometimes as small solidified sulfur flows inside the crater.
Sylvite
Formula: KCl
Thénardite
Formula: Na2SO4
Tridymite
Formula: SiO2
Tugarinovite
Formula: MoO2
'Unnamed (Tl-Bi Sulphide)'
Formula: Tl-Bi-S
'Wollastonite Group'
Habit: Acicular, in small radially grown tufts or randomly intergrown.
Colour: Colorless
Description: Colorless needles, in small tufts and randomly intergrown. Associated with garnet and green pyroxenes in high temperature fumaroles in zones with little or no metal sulfide sublimate deposition. Possibly (but not yet confirmed analytically) also on crumbly red rocks from high-temperature fumaroles associated with sulfates (copiapite group). Raman analysis by Günter Frenz.
Wulfenite
Formula: Pb(MoO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Clinosulphur1.CC.S8
Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Sphalerite2.CB.05aZnS
Pyrrhotite2.CC.10Fe1-xS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 3 - Halides
Sylvite3.AA.20KCl
Halite3.AA.20NaCl
Challacolloite3.AA.55KPb2Cl5
Cotunnite3.AB.85PbCl2
Group 4 - Oxides and Hydroxides
Goethite4.00.α-Fe3+O(OH)
Magnetite4.BB.05Fe2+Fe3+2O4
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Quartz4.DA.05SiO2
Tridymite4.DA.10SiO2
Opal
var. Opal-AG
4.DA.10SiO2 · nH2O
4.DA.10SiO2 · nH2O
var. Hyalite4.DA.10SiO2 · nH2O
Cristobalite4.DA.15SiO2
Tugarinovite4.DB.05MoO2
Cassiterite4.DB.05SnO2
Ferberite4.DB.30FeWO4
Anatase4.DD.05TiO2
Molybdite4.E0.10MoO3
Ferrihydrite4.FE.35Fe3+10O14(OH)2
Ilsemannite4.FJ.15Mo3O8 · nH2O
'Buserite'4.FL.35Na4Mn14O27 · 21H2O
Group 6 - Borates
Sassolite6.AA.05H3BO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Aphthitalite7.AC.35(K,Na)3Na(SO4)2
Thénardite7.AD.25Na2SO4
Anhydrite7.AD.30CaSO4
Anglesite7.AD.35PbSO4
Palmierite7.AD.40K2Pb(SO4)2
Hydroniumjarosite7.BC.10(H3O)Fe3+3(SO4)2(OH)6
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Alunite7.BC.10KAl3(SO4)2(OH)6
Gypsum7.CD.40CaSO4 · 2H2O
Wulfenite7.GA.05Pb(MoO4)
Group 9 - Silicates
Fayalite9.AC.05Fe2+2SiO4
Roedderite9.CM.05K(◻Na)Mg2Mg3[Si12O30]
Ferrosilite9.DA.05Fe2+2Si2O6
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Aegirine9.DA.25NaFe3+Si2O6
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Albite9.FA.35Na(AlSi3O8)
var. Anorthoclase9.FA.35(Na,K)AlSi3O8
Unclassified
'Siderogel'-~FeO(OH) · nH2O
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Garnet Group'-X3Z2(SiO4)3
'Limonite'-
'Copiapite Group'-
'Sulfurite'-S
'Hypersthene'-(Mg,Fe)SiO3
'Wollastonite Group'-
'Coquimbite Group'-
'Unnamed (Tl-Bi Sulphide)'-Tl-Bi-S

List of minerals for each chemical element

HHydrogen
H AluniteKAl3(SO4)2(OH)6
H FerrihydriteFe103+O14(OH)2
H Goethiteα-Fe3+O(OH)
H GypsumCaSO4 · 2H2O
H Hydroniumjarosite(H3O)Fe33+(SO4)2(OH)6
H IlsemanniteMo3O8 · nH2O
H JarositeKFe33+(SO4)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H OpalSiO2 · nH2O
H SassoliteH3BO3
H Siderogel~FeO(OH) · nH2O
H BuseriteNa4Mn14O27 · 21H2O
H Opal var. Opal-AGSiO2 · nH2O
H Opal var. HyaliteSiO2 · nH2O
BBoron
B SassoliteH3BO3
OOxygen
O AegirineNaFe3+Si2O6
O AlbiteNa(AlSi3O8)
O AluniteKAl3(SO4)2(OH)6
O AnataseTiO2
O AnglesitePbSO4
O AnhydriteCaSO4
O Albite var. Anorthoclase(Na,K)AlSi3O8
O Aphthitalite(K,Na)3Na(SO4)2
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O CassiteriteSnO2
O CristobaliteSiO2
O FayaliteFe22+SiO4
O FerberiteFeWO4
O FerrihydriteFe103+O14(OH)2
O FerrosiliteFe22+Si2O6
O Goethiteα-Fe3+O(OH)
O GypsumCaSO4 · 2H2O
O HematiteFe2O3
O Hydroniumjarosite(H3O)Fe33+(SO4)2(OH)6
O Hypersthene(Mg,Fe)SiO3
O IlmeniteFe2+TiO3
O IlsemanniteMo3O8 · nH2O
O JarositeKFe33+(SO4)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O MagnetiteFe2+Fe23+O4
O MolybditeMoO3
O OpalSiO2 · nH2O
O PalmieriteK2Pb(SO4)2
O QuartzSiO2
O RoedderiteK(◻Na)Mg2Mg3[Si12O30]
O SassoliteH3BO3
O Siderogel~FeO(OH) · nH2O
O ThénarditeNa2SO4
O TridymiteSiO2
O TugarinoviteMoO2
O WulfenitePb(MoO4)
O BuseriteNa4Mn14O27 · 21H2O
O Garnet GroupX3Z2(SiO4)3
O Opal var. Opal-AGSiO2 · nH2O
O Opal var. HyaliteSiO2 · nH2O
NaSodium
Na AegirineNaFe3+Si2O6
Na AlbiteNa(AlSi3O8)
Na Albite var. Anorthoclase(Na,K)AlSi3O8
Na Aphthitalite(K,Na)3Na(SO4)2
Na HaliteNaCl
Na RoedderiteK(◻Na)Mg2Mg3[Si12O30]
Na ThénarditeNa2SO4
Na BuseriteNa4Mn14O27 · 21H2O
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg Hypersthene(Mg,Fe)SiO3
Mg RoedderiteK(◻Na)Mg2Mg3[Si12O30]
AlAluminium
Al AlbiteNa(AlSi3O8)
Al AluniteKAl3(SO4)2(OH)6
Al Albite var. Anorthoclase(Na,K)AlSi3O8
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si AegirineNaFe3+Si2O6
Si AlbiteNa(AlSi3O8)
Si Albite var. Anorthoclase(Na,K)AlSi3O8
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si CristobaliteSiO2
Si FayaliteFe22+SiO4
Si FerrosiliteFe22+Si2O6
Si Hypersthene(Mg,Fe)SiO3
Si KaoliniteAl2(Si2O5)(OH)4
Si OpalSiO2 · nH2O
Si QuartzSiO2
Si RoedderiteK(◻Na)Mg2Mg3[Si12O30]
Si TridymiteSiO2
Si Garnet GroupX3Z2(SiO4)3
Si Opal var. Opal-AGSiO2 · nH2O
Si Opal var. HyaliteSiO2 · nH2O
SSulfur
S AluniteKAl3(SO4)2(OH)6
S AnglesitePbSO4
S AnhydriteCaSO4
S Aphthitalite(K,Na)3Na(SO4)2
S GypsumCaSO4 · 2H2O
S Hydroniumjarosite(H3O)Fe33+(SO4)2(OH)6
S JarositeKFe33+(SO4)2(OH)6
S MolybdeniteMoS2
S PalmieriteK2Pb(SO4)2
S PyriteFeS2
S PyrrhotiteFe1-xS
S SphaleriteZnS
S SulphurS8
S ThénarditeNa2SO4
S SulfuriteS
S ClinosulphurS8
S Unnamed (Tl-Bi Sulphide)Tl-Bi-S
ClChlorine
Cl CotunnitePbCl2
Cl HaliteNaCl
Cl SylviteKCl
Cl ChallacolloiteKPb2Cl5
KPotassium
K AluniteKAl3(SO4)2(OH)6
K Albite var. Anorthoclase(Na,K)AlSi3O8
K Aphthitalite(K,Na)3Na(SO4)2
K JarositeKFe33+(SO4)2(OH)6
K PalmieriteK2Pb(SO4)2
K RoedderiteK(◻Na)Mg2Mg3[Si12O30]
K SylviteKCl
K ChallacolloiteKPb2Cl5
CaCalcium
Ca AnhydriteCaSO4
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca GypsumCaSO4 · 2H2O
TiTitanium
Ti AnataseTiO2
Ti IlmeniteFe2+TiO3
MnManganese
Mn BuseriteNa4Mn14O27 · 21H2O
FeIron
Fe AegirineNaFe3+Si2O6
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe FayaliteFe22+SiO4
Fe FerberiteFeWO4
Fe FerrihydriteFe103+O14(OH)2
Fe FerrosiliteFe22+Si2O6
Fe Goethiteα-Fe3+O(OH)
Fe HematiteFe2O3
Fe Hydroniumjarosite(H3O)Fe33+(SO4)2(OH)6
Fe Hypersthene(Mg,Fe)SiO3
Fe IlmeniteFe2+TiO3
Fe JarositeKFe33+(SO4)2(OH)6
Fe MagnetiteFe2+Fe23+O4
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
Fe Siderogel~FeO(OH) · nH2O
ZnZinc
Zn SphaleriteZnS
MoMolybdenum
Mo IlsemanniteMo3O8 · nH2O
Mo MolybdeniteMoS2
Mo MolybditeMoO3
Mo TugarinoviteMoO2
Mo WulfenitePb(MoO4)
SnTin
Sn CassiteriteSnO2
WTungsten
W FerberiteFeWO4
TlThallium
Tl Unnamed (Tl-Bi Sulphide)Tl-Bi-S
PbLead
Pb AnglesitePbSO4
Pb CotunnitePbCl2
Pb PalmieriteK2Pb(SO4)2
Pb WulfenitePb(MoO4)
Pb ChallacolloiteKPb2Cl5
BiBismuth
Bi Unnamed (Tl-Bi Sulphide)Tl-Bi-S

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/I%C5%8Djima_(Kagoshima)
Wikidata ID:Q705894
GeoNames ID:1861524

Localities in this Region

Other Regions, Features and Areas that Intersect

Okinawa 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

 
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