Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
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 ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced 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 MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Ohmi river (Ohmi-gawa), Ōmi, Itoigawa City, Niigata Prefecture, Japani
Regional Level Types
Ohmi river (Ohmi-gawa)River
ŌmiSuburb
Itoigawa CityCity
Niigata PrefecturePrefecture
JapanCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
36° 57' 41'' North , 137° 45' 29'' East
Latitude & Longitude (decimal):
Type:
Mindat Locality ID:
227872
Long-form identifier:
mindat:1:2:227872:1
GUID (UUID V4):
0
Name(s) in local language(s):
青海川, 新潟県 糸魚川市 青海


GPS coordinates are approximate.
2021/10/31 Updated to correct coordinates.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


12 valid minerals.

Rock Types Recorded

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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Albite
Formula: Na(AlSi3O8)
Benitoite
Formula: BaTi(Si3O9)
Diaspore
Formula: AlO(OH)
References:
Hikaru Shibuya specimenIdentification: Dealer/Collection Label
Itoigawaite
Formula: SrAl2(Si2O7)(OH)2 · H2O
References:
Hikaru Shibuya CollectionIdentified by Hikaru Shibuya: Dealer/Collection Label, XRF
Jadeite
Formula: Na(Al,Fe3+)Si2O6
Magnesio-riebeckite
Formula: ◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Niigataite
Formula: (CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
References:
Hikaru Shibuya specimenIdentification: SEM-EDS
Ohmilite
Formula: Sr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
Pectolite
Formula: NaCa2Si3O8(OH)
Prehnite
Formula: Ca2Al2Si3O10(OH)2
References:
Hikaru Shibuya specimenIdentification: Dealer/Collection Label
Strontio-orthojoaquinite
Formula: (Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Diaspore4.FD.10AlO(OH)
Group 9 - Silicates
Itoigawaite9.BE.05SrAl2(Si2O7)(OH)2 · H2O
Niigataite9.BG.05(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
Benitoite9.CA.05BaTi(Si3O9)
Strontio-orthojoaquinite9.CE.25(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
Jadeite9.DA.25Na(Al,Fe3+)Si2O6
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Magnesio-riebeckite9.DE.25◻{Na2}{Mg3Fe3+2}(Si8O22)(OH)2
Pectolite9.DG.05NaCa2Si3O8(OH)
Ohmilite9.DH.10Sr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Albite9.FA.35Na(AlSi3O8)

List of minerals for each chemical element

HHydrogen
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
H DiasporeAlO(OH)
H Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
H OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
H PectoliteNaCa2Si3O8(OH)
H PrehniteCa2Al2Si3O10(OH)2
H Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
H ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
H Niigataite(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
OOxygen
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
O AlbiteNa(AlSi3O8)
O BenitoiteBaTi(Si3O9)
O DiasporeAlO(OH)
O JadeiteNa(Al,Fe3+)Si2O6
O Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
O OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
O PectoliteNaCa2Si3O8(OH)
O PrehniteCa2Al2Si3O10(OH)2
O Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
O ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
O Niigataite(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
NaSodium
Na AlbiteNa(AlSi3O8)
Na JadeiteNa(Al,Fe3+)Si2O6
Na Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Na PectoliteNaCa2Si3O8(OH)
Na Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
MgMagnesium
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mg Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
AlAluminium
Al AlbiteNa(AlSi3O8)
Al DiasporeAlO(OH)
Al JadeiteNa(Al,Fe3+)Si2O6
Al PrehniteCa2Al2Si3O10(OH)2
Al ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
Al Niigataite(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
SiSilicon
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Si AlbiteNa(AlSi3O8)
Si BenitoiteBaTi(Si3O9)
Si JadeiteNa(Al,Fe3+)Si2O6
Si Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Si OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
Si PectoliteNaCa2Si3O8(OH)
Si PrehniteCa2Al2Si3O10(OH)2
Si Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
Si ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
Si Niigataite(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
CaCalcium
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ca PectoliteNaCa2Si3O8(OH)
Ca PrehniteCa2Al2Si3O10(OH)2
Ca Niigataite(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
TiTitanium
Ti BenitoiteBaTi(Si3O9)
Ti OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
Ti Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
FeIron
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Fe JadeiteNa(Al,Fe3+)Si2O6
Fe Magnesio-riebeckite◻{Na2}{Mg3Fe23+}(Si8O22)(OH)2
Fe OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
Fe Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
SrStrontium
Sr OhmiliteSr3(Ti,Fe3+)(Si4O12)(O,OH) · 2-3H2O
Sr Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O
Sr ItoigawaiteSrAl2(Si2O7)(OH)2 · H2O
Sr Niigataite(CaSr)(AlAlAl)O[Si2O7][SiO4](OH)
BaBarium
Ba BenitoiteBaTi(Si3O9)
Ba Strontio-orthojoaquinite(Na,Fe)2Sr2Ba2Ti2[Si4O12]2O2(O,OH)2 · H2O

Other Regions, Features and Areas containing this locality

Amur PlateTectonic Plate
AsiaContinent
Eurasian Plate
Japan

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.
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 3, 2026 02:02:50 Page updated: October 27, 2025 10:34:27
Go to top of page