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

Tadjera meteorite, Sétif Province, Algeriai
Regional Level Types
Tadjera meteoriteMeteorite Fall Location
Sétif ProvinceProvince
AlgeriaCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Latitude & Longitude (WGS84):
36° 10' 59'' North , 5° 25' 0'' East
Latitude & Longitude (decimal):
Meteorite Class:
Meteoritical Society Class:
Nearest Settlements:
PlacePopulationDistance
Sétif288,461 (2018)0.9km
Aïn Arnat35,088 (2013)9.3km
El Eulma128,351 (2012)24.8km
Bougaa38,597 (2012)33.8km
BABOR - VILLE33,000 (2008)35.8km


Ordinary chondrite, black (L5)
Fell, 9 June 1867; 9 kg

After the appearance of a SW to NE moving fireball and 3 detonations, 2 stones were found. The hardened nature and striking 'coal black' interior of the Tadjera meteorite soon led Meunier to coin the term 'tadjerite' to designate a new type of chondritic meteorite. The interior consists primarily of aggregated silicate-rich chondrules accompanied by minor amounts of Fe-Ni metal, troilite, and assortae. Overall, olivine and pyroxene in a roughly 2:1 ratio account for approximately 75 vol% of the meteorite. Only traces of albitic plagioclase (An~15) are present as most of the original plagioclase has been largely converted into maskelynite (~10 vol%). In addition to minor Fe-Ni metal and troilite, chromite and several other minor accessories have also been observed. The troilite — largely present as finely disseminated dustlike particles — appears to be the primary agent responsible for the meteorite's unusual black color. The term 'tadjerite' is no longer in currency, but the meteorite is one of the ~13% of equilibrated ordinary chondrites labelled as a 'black' chondrite in meteoritic parlance (color usually, but not always due to shock). Total iron (20.94 wt%) and the composition of olivine (Fa 24) and Ca-poor pyroxene (Fs20) are characteristic of L (low iron) chondrites. However, the presence of clinopyroxene as the primary or only form of Ca-poor pyroxene in a type 5 ordinary chondrite is presumably due to shock [assuming proper classification].

Tadjera is one of 80 confirms falls listed exactly as an L5 with The Meteoritical Bulletin Database (late February 2016). The L group of ordinary chondrites (ordinary chondrites relatively low in total Iron) account for roughly 40% of all meteorite falls.

The main mass has been kept at the Muséum National d'Histoire Naturelle in Paris.

Regions containing this locality

African PlateTectonic Plate
Northwest Africa MeteoritesMeteorite Fall Location

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 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:

'Albite-Anorthite Series'
Reference: Olsen, E. (1981) Vugs in ordinary chondrites: Meteoritics 16: 45-59. (Mar 1981). ; Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).
Chromite
Formula: Fe2+Cr3+2O4
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Clinopyroxene Subgroup'
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).
'Fayalite-Forsterite Series'
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).; Olsen, E. (1981) Vugs in ordinary chondrites: Meteoritics 16: 45-59. (Mar 1981).
Ilmenite
Formula: Fe2+TiO3
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron
Formula: Fe
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron var: Kamacite
Formula: (Fe,Ni)
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Iron var: Martensite
Formula: Fe
Reference: Smith, B. A. & Goldstein, J. I. (1977) The metallic microstructures and thermal histories of severely reheated chondrites: Geochimica et Cosmochimica Acta 41:1061-1072. (Aug 1977).
Isocubanite
Formula: CuFe2S3
Reference: Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
'Maskelynite'
Description: Composition (An~12) according to Mason & Wiik (1966).
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).
Taenite
Formula: (Fe,Ni)
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Troilite
Formula: FeS
Reference: Mason, B. & Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pp. (Dec 1966).; Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages. ; Olsen, E. (1981) Vugs in ordinary chondrites: Meteoritics 16: 45-59. (Mar 1981).

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Iron1.AE.05Fe
var: Kamacite1.AE.05(Fe,Ni)
var: Martensite1.AE.05Fe
Taenite1.AE.10(Fe,Ni)
Group 2 - Sulphides and Sulfosalts
Isocubanite2.CB.55bCuFe2S3
Troilite2.CC.10FeS
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Ilmenite4.CB.05Fe2+TiO3
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
'Maskelynite'-

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)
Taenite1.1.11.2(Fe,Ni)
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Troilite2.8.9.1FeS
AmBnXp, with (m+n):p = 1:1
Isocubanite2.9.13.3CuFe2S3
Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Clinopyroxene Subgroup'-
'Fayalite-Forsterite Series'-
Iron-Fe
var: Martensite-Fe
'Maskelynite'-

List of minerals for each chemical element

OOxygen
O ChromiteFe2+Cr23+O4
O IlmeniteFe2+TiO3
SSulfur
S TroiliteFeS
S IsocubaniteCuFe2S3
TiTitanium
Ti IlmeniteFe2+TiO3
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe ChromiteFe2+Cr23+O4
Fe IlmeniteFe2+TiO3
Fe Iron (var: Kamacite)(Fe,Ni)
Fe Taenite(Fe,Ni)
Fe TroiliteFeS
Fe IsocubaniteCuFe2S3
Fe Iron (var: Martensite)Fe
Fe IronFe
NiNickel
Ni Iron (var: Kamacite)(Fe,Ni)
Ni Taenite(Fe,Ni)
CuCopper
Cu IsocubaniteCuFe2S3

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Mason, B., Wiik, H.B. (1966) The Composition of the Bath, Frankfort, Kakangari, Rose City, and Tadjera Meteorites. American Museum Novitates, No.2272, New York. 24 pages (Dec 1966).
Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Smith, B.A., Goldstein, J.I. (1977) The metallic microstructures and thermal histories of severely reheated chondrites: Geochimica et Cosmochimica Acta, 41, 1061-1072 (Aug 1977).
Olsen, E. (1981) Vugs in ordinary chondrites. Meteoritics, 16, 45-59 (Mar 1981).
Grady, M.M (2000) Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 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: October 14, 2019 14:03:07 Page generated: August 28, 2019 08:57:02
Go to top of page