SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Aogashima, Izu Archipelago, Tokyo, Japani
Regional Level Types
Aogashima- not defined -
Izu Archipelago- not defined -
TokyoPrefecture
JapanCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Area:9 km2


A small (900 hectare; 3.5 km N-S, 2.5 km E-W) Quaternary volcanic island, highest elevation 423 meters (1,388 feet) in the Pacific Ocean, 370 km south of Tokyo. Last big eruption, which killed half of the population of about 300 people, was in 1785 C.E. Current activity limited to steam emission at several spots on Maruyama volcano and elsewhere in Ikenosawa caldera.

Regions containing this locality

Philippine Sea Plate

Plate - 332 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

15 valid minerals.

Detailed Mineral List:

Anorthite
Formula: Ca(Al2Si2O8)
Reference: Itaru Ogitsu: Origin of composition correlation between plagioclase phenocryst and groundmass in basalt lava of Aogashima Volcano. Earth & Planetary Science, Tokyo University
Anorthite var: Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Itaru Ogitsu: Origin of composition correlation between plagioclase phenocryst and groundmass in basalt lava of Aogashima Volcano. Earth & Planetary Science, Tokyo University
Aragonite
Formula: CaCO3
Atacamite
Formula: Cu2(OH)3Cl
Birnessite
Formula: (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Reference: Y. Okayama: Hydrothermal manganese oxides from southwest region of Aogashima island. Mining Geology, 42 (3), 194ff
Calcite
Formula: CaCO3
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Alfredo Petrov - field observations, 4-2014
Copper
Formula: Cu
Reference: Alfredo Petrov - field observations, 4-2014
Forsterite
Formula: Mg2SiO4
Reference: Alfredo Petrov - field observations, 4-2014
Gypsum
Formula: CaSO4 · 2H2O
Reference: Field observations, Dr Amir Akhavan, 4-2014.
Hematite
Formula: Fe2O3
Reference: Alfredo Petrov - field observations, 4-2014
Kaolinite
Formula: Al2(Si2O5)(OH)4
Natroalunite
Formula: NaAl3(SO4)2(OH)6
'Natroalunite-2c'
Formula: (Na,Ca0.5,K)Al3(SO4)2(OH)6
Opal
Formula: SiO2 · nH2O
Reference: Alfredo Petrov - field observations, 4-2014
'Pyroxene Group'
Todorokite
Formula: (Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Reference: Y. Okayama: Hydrothermal manganese oxides from southwest region of Aogashima island. Mining Geology, 42 (3), 194ff
Volborthite
Formula: Cu3(V2O7)(OH)2 · 2H2O

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 3 - Halides
'Atacamite'3.DA.10aCu2(OH)3Cl
Group 4 - Oxides and Hydroxides
'Birnessite'4.FL.45(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Hematite4.CB.05Fe2O3
Opal4.DA.10SiO2 · nH2O
Todorokite4.DK.10(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Group 5 - Nitrates and Carbonates
'Aragonite'5.AB.15CaCO3
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Natroalunite7.BC.10NaAl3(SO4)2(OH)6
Natroalunite-2c7.BC.10(Na,Ca0.5,K)Al3(SO4)2(OH)6
Group 8 - Phosphates, Arsenates and Vanadates
Volborthite8.FD.05Cu3(V2O7)(OH)2 · 2H2O
Group 9 - Silicates
'Anorthite'9.FA.35Ca(Al2Si2O8)
var: Bytownite9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Forsterite9.AC.05Mg2SiO4
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified Minerals, Rocks, etc.
Pyroxene Group-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
(AB)2X3
Birnessite7.5.3.1(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
AB3X7
Todorokite7.8.1.1(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Group 10 - OXYHALIDES AND HYDROXYHALIDES
A2(O,OH)3Xq
Atacamite10.1.1.1Cu2(OH)3Cl
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
'Natroalunite-2c'30.2.4.5(Na,Ca0.5,K)Al3(SO4)2(OH)6
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
A3(XO4)2·xH2O
Volborthite40.3.10.1Cu3(V2O7)(OH)2 · 2H2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Forsterite51.3.1.2Mg2SiO4
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Rocks, etc.
Anorthite-Ca(Al2Si2O8)
var: Bytownite-(Ca,Na)[Al(Al,Si)Si2O8]
Aragonite-CaCO3
Kaolinite-Al2(Si2O5)(OH)4
Natroalunite-NaAl3(SO4)2(OH)6
'Pyroxene Group'-

List of minerals for each chemical element

HHydrogen
H AtacamiteCu2(OH)3Cl
H Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H GypsumCaSO4 · 2H2O
H KaoliniteAl2(Si2O5)(OH)4
H NatroaluniteNaAl3(SO4)2(OH)6
H Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
H OpalSiO2 · nH2O
H Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
H VolborthiteCu3(V2O7)(OH)2 · 2H2O
CCarbon
C AragoniteCaCO3
C CalciteCaCO3
OOxygen
O AnorthiteCa(Al2Si2O8)
O AragoniteCaCO3
O AtacamiteCu2(OH)3Cl
O Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
O Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
O CalciteCaCO3
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O ForsteriteMg2SiO4
O GypsumCaSO4 · 2H2O
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O NatroaluniteNaAl3(SO4)2(OH)6
O Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
O OpalSiO2 · nH2O
O Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
O VolborthiteCu3(V2O7)(OH)2 · 2H2O
NaSodium
Na Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Na Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Na NatroaluniteNaAl3(SO4)2(OH)6
Na Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
Na Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
MgMagnesium
Mg ForsteriteMg2SiO4
Mg Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
AlAluminium
Al AnorthiteCa(Al2Si2O8)
Al Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al KaoliniteAl2(Si2O5)(OH)4
Al NatroaluniteNaAl3(SO4)2(OH)6
Al Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
Al Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
SiSilicon
Si AnorthiteCa(Al2Si2O8)
Si Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si ForsteriteMg2SiO4
Si KaoliniteAl2(Si2O5)(OH)4
Si OpalSiO2 · nH2O
SSulfur
S GypsumCaSO4 · 2H2O
S NatroaluniteNaAl3(SO4)2(OH)6
S Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
ClChlorine
Cl AtacamiteCu2(OH)3Cl
KPotassium
K Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
K Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
CaCalcium
Ca AnorthiteCa(Al2Si2O8)
Ca AragoniteCaCO3
Ca Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Ca Anorthite (var: Bytownite)(Ca,Na)[Al(Al,Si)Si2O8]
Ca CalciteCaCO3
Ca GypsumCaSO4 · 2H2O
Ca Natroalunite-2c(Na,Ca0.5,K)Al3(SO4)2(OH)6
Ca Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
VVanadium
V VolborthiteCu3(V2O7)(OH)2 · 2H2O
MnManganese
Mn Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Mn Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
FeIron
Fe HematiteFe2O3
CuCopper
Cu AtacamiteCu2(OH)3Cl
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu CopperCu
Cu VolborthiteCu3(V2O7)(OH)2 · 2H2O
SrStrontium
Sr Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
BaBarium
Ba Todorokite(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O

Localities in this Region
Show map


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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: November 13, 2019 06:38:27 Page generated: December 23, 2018 04:28:37
Go to top of page