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

Okano meteorite, Sasayama, Taki, Hyogo, Japani
Regional Level Types
Okano meteoriteMeteorite Fall Location
Sasayama- not defined -
Taki- not defined -
HyogoPrefecture
JapanCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 35° 5' North , 135° 12' East
Latitude & Longitude (decimal): 35.08333,135.20000
GeoHash:G#: xn0psd9xh
Locality type:Meteorite Fall Location
Meteorite Class:IIAB iron meteorite
Meteoritical Society Class:Iron, IIAB
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfa : Humid subtropical climate


Iron meteorite, hexahedrite (IIAB)
Fall, 7 April 1904; 4.742 kg

After the appearance of a morning fireball accompanied by a trail of white smoke and loud detonations, an iron-rich mass [18 x 12 x 7 cm] was recovered almost immediately from a 80 cm deep hole by a farmer who had seen it fall. One side of the mass was smooth, the other characterized by angular regmaglypts. A .2-1 mm thick fusion crust covers most of both sides. The Fe-Ni mass (5.4 wt% Ni) consists almost entirely of a single crystal of kamacite. The kamacite contains Neumann bands indicative of preterrestrial shock. Small troilite inclusions and even smaller schreibersite precipitates are found. Troilite nodules contain daubréelite lamellae and display deformation twinning further indicative of preterrestrial impacts.

Okano appears to be a very normal IIAB hexahedrite and is one of only 6 known IIAB falls. At the end of 2014 IIAB irons represented 11% of all recovered iron meteorites listed at the Meteoritical Society's Meteoritical Bulletin Database. The major part of the Okano mass (3.5 kg) is preserved at Kyoto University.

Regions containing this locality

Honshu Island, Japan

Island - 1,361 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Meteorite/Rock Types Recorded

Note: this is a very new system on mindat.org and 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:

Daubréelite
Formula: Fe2+Cr3+2S4
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.; http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35874/vol3-Ri-Ro(LO).pdf#page=14
'IIAB iron meteorite'
Reference: Meteoritical Society Database
Iron
Formula: Fe
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.; http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35874/vol3-Ri-Ro(LO).pdf#page=14
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.; http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35874/vol3-Ri-Ro(LO).pdf#page=14
Schreibersite
Formula: (Fe,Ni)3P
Description: As precipitates on the troilite. Rhabdites are common.
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.; http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35874/vol3-Ri-Ro(LO).pdf#page=14
Troilite
Formula: FeS
Description: Monocrystalline with numerous lenticular-acicular twins from plastic deformation.
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.; http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35874/vol3-Ri-Ro(LO).pdf#page=14

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Iron'1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
Schreibersite1.BD.05(Fe,Ni)3P
Group 2 - Sulphides and Sulfosalts
'Daubréelite'2.DA.05Fe2+Cr3+2S4
Troilite2.CC.10FeS
Unclassified Minerals, Rocks, etc.
'IIAB iron meteorite'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Iron
var: Kamacite
1.1.11.1(Fe,Ni)
Schreibersite1.1.21.2(Fe,Ni)3P
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 3:4
Daubréelite2.10.1.11Fe2+Cr3+2S4
Unclassified Minerals, Rocks, etc.
'IIAB iron meteorite'-
Iron-Fe

List of minerals for each chemical element

PPhosphorus
P Schreibersite(Fe,Ni)3P
SSulfur
S DaubréeliteFe2+Cr23+S4
S TroiliteFeS
CrChromium
Cr DaubréeliteFe2+Cr23+S4
FeIron
Fe DaubréeliteFe2+Cr23+S4
Fe IronFe
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Schreibersite(Fe,Ni)3P
Fe TroiliteFeS
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Schreibersite(Fe,Ni)3P

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleogene - Cretaceous
23.03 - 145 Ma



ID: 3185777
Mesozoic-Cenozoic volcanic and intrusive rocks

Age: Phanerozoic (23.03 - 145 Ma)

Lithology: Intermediate-felsic volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Grady, M. M. (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

External Links



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: September 16, 2019 12:00:23 Page generated: December 6, 2018 05:06:52
Go to top of page