Tadjera meteorite, Sétif, Sétif District, Sétif Province, Algeriai
| Regional Level Types | |
|---|---|
| Tadjera meteorite | Meteorite Fall Location |
| Sétif | Commune |
| Sétif District | District |
| Sétif Province | Province |
| Algeria | Country |
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Latitude & Longitude (WGS84):
36° 10' 59'' North , 5° 25' 0'' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Sétif | 288,461 (2018) | 0.9km |
| Aïn Arnat | 35,088 (2013) | 9.3km |
| El Eulma | 128,351 (2012) | 24.8km |
| Bougaa | 38,597 (2012) | 33.8km |
| BABOR - VILLE | 33,000 (2008) | 35.8km |
Ordinary chondrite, black (L5)
Fell, 9 June 1867; 9 kg
After the appearance of an 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.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
6 valid minerals.
Meteorite/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 DiagramDetailed Mineral List:
| ⓘ 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). |
| ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 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). |
| ⓘ 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). |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 1 - Elements | |||
|---|---|---|---|
| ⓘ | Iron | 1.AE.05 | Fe |
| ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
| ⓘ | var. Martensite | 1.AE.05 | Fe |
| ⓘ | Taenite | 1.AE.10 | (Fe,Ni) |
| Group 2 - Sulphides and Sulfosalts | |||
| ⓘ | Isocubanite | 2.CB.55b | CuFe2S3 |
| ⓘ | Troilite | 2.CC.10 | FeS |
| Group 4 - Oxides and Hydroxides | |||
| ⓘ | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
| ⓘ | Ilmenite | 4.CB.05 | Fe2+TiO3 |
| Unclassified Minerals, Rocks, etc. | |||
| ⓘ | 'Clinopyroxene Subgroup' | - | |
| ⓘ | 'Fayalite-Forsterite Series' | - | |
| ⓘ | 'Maskelynite' | - | |
| ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Chromite | Fe2+Cr23+O4 |
| O | ⓘ Ilmenite | Fe2+TiO3 |
| O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Na | Sodium | |
| Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Al | Aluminium | |
| Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Si | Silicon | |
| Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| S | Sulfur | |
| S | ⓘ Troilite | FeS |
| S | ⓘ Isocubanite | CuFe2S3 |
| Ca | Calcium | |
| Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
| Ti | Titanium | |
| Ti | ⓘ Ilmenite | Fe2+TiO3 |
| Cr | Chromium | |
| Cr | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | Iron | |
| Fe | ⓘ Chromite | Fe2+Cr23+O4 |
| Fe | ⓘ Ilmenite | Fe2+TiO3 |
| Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
| Fe | ⓘ Taenite | (Fe,Ni) |
| Fe | ⓘ Troilite | FeS |
| Fe | ⓘ Isocubanite | CuFe2S3 |
| Fe | ⓘ Iron var. Martensite | Fe |
| Fe | ⓘ Iron | Fe |
| Ni | Nickel | |
| Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
| Ni | ⓘ Taenite | (Fe,Ni) |
| Cu | Copper | |
| Cu | ⓘ Isocubanite | CuFe2S3 |
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
http://www.lpi.usra.edu/meteor/metbull.php - MeteoriticalBulletinDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=23778 -Tadjera@MetBullDatabase
http://www.lpi.usra.edu/meteor/metbull.php?code=23778 -Tadjera@MetBullDatabase
Other Regions, Features and Areas containing this locality
African PlateTectonic Plate
- Atlas basinBasin
Northwest Africa MeteoritesGroup of Meteorite Fall Locations
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