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 Articles
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 CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Gujba meteorite, Bogga Dingare, Yobe State, Nigeria

This page is currently not sponsored. Click here to sponsor this page.
 
 
Bencubbin-like Carbonaceous Chondrite [CBa; S2; W0]
Disaggregated stones with conspicuous metal and silicate nodules


In the early evening of April 3, 1984 the meteorite fell in a corn field near the village of Bogga Dingare after a bright fireball was seen with an explosion. Local people hammered the meteorite into many pieces, and most of the material was dispersed. The original mass may have been ~100 kg, but only 12 kg is accounted for. Various pieces have passed thru many hands with inconsistent amounts of weathering. Gujba is the only known CBa fall, but its nature was not known until the CB group had been formally defined using Bencubbin as a prototype. Members of the CBa subgroup are distinguished by their chondrule-like silicates, abundant metal, and virtual lack of refractory inclusions.

The CB group is somewhat of an outlier among Carbonaceous Chondrites, but its chemical affinities to other Carbonaceous and, most especially, its oxygen isotope peculiarities, place it clearly within the larger grouping’s defined boundaries.

Mineral List



14 entries listed. 9 valid minerals.

The above list 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

Grossman, J. N. & Zipfel, J. (2001). The Meteoritical Bulletin, No. 85, 2001 September. Meteoritics & Planetary Science:36(9) (supplement): A293-A322. (September, 2001).

Rubin, A.E., Kallemeyn, G.W., Wasson, J.T., Clayton, R.N., Mayeda, T.K., Grady, M.M. and Verchovsky, A.B. (2001). Gujba: A new Bencubbin-like meteorite fall from Nigeria. In: 32nd Lunar and Planetary Science Conference, 12-16 March 2001, Houston, Texas, USA.

Weisberg, M.K. & Kimura, M. (2010). Petrology and Raman spectroscopy of high pressure phases in the Gujba CB chondrite and the shock history of the CB parent body. Meteoritics & Planetary Science: 45(5): 873–884. (May 2010).

External Links

http://www.lpi.usra.edu/meteor/metbull.php (Meteoritical Society’s “Meteoritical Society Database”)

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. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 20, 2019 03:13:53 Page generated: January 12, 2015 04:34:07
Go to top of page