Ufana meteorite, Babati District, Manyara Region, Tanzaniai
Regional Level Types | |
---|---|
Ufana meteorite | Meteorite Fall Location |
Babati District | District |
Manyara Region | Region |
Tanzania | Country |
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Latitude & Longitude (WGS84):
4° 16' South , 35° 21' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Enstatite Chondrite, low-iron [EL6; S2]
Fall of 5 August 1957, 189.2 g
Near sunset a fireball was seen and loud detonations were heard over a radius of 130 kilometers — and two small meteorite fragments were found south of Ufana. Ufana is an Enstatite Chondrite, a class of rare meteorites formally defined by specific elemental ratios and by their earthlike isotopic ratios. Mineralogically, however, Enstatite Chondrites are strikingly different from most other meteorites as well from earth rocks. Most obvious is the dominant presence of iron-poor Enstatite accompanied by accessory Fe-Ni metal, Troilite and minor schreibersite. Even more interesting are the various very reduced mineral phases. Many of these phases are either extremely rare or unknown in terrestrial rocks. The presence of ferroan alabandite marks Ufana as a member of the EL (low iron) chemical group of the Enstatite chondrites. Ufana is also one of a small handful of meteorites — almost all of them Type EL6 — which contain Sinoite, a silicon oxy-nitride.
For such a small meteorite, Ufana presents an exceptionally unusual mineralogical portfolio.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
9 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:
ⓘ Alabandite Formula: MnS Reference: Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966) ; Keil, K. (1968). Mineralogical and Chemical Relationships among the Enstatite Chondrites. Journal of Geophysical Research 73 (22): 6945-6976. (Nov 1968) |
ⓘ Daubréelite Formula: Fe2+Cr3+2S4 Reference: Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966) |
ⓘ Enstatite Formula: Mg2Si2O6 Reference: Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966) |
ⓘ Graphite Formula: C Reference: Keil, K. (1968). Mineralogical and Chemical Relationships among the Enstatite Chondrites. Journal of Geophysical Research 73 (22): 6945-6976. (Nov 1968) |
ⓘ Iron Formula: Fe Reference: Keil, K. (1968). Mineralogical and Chemical Relationships among the Enstatite Chondrites. Journal of Geophysical Research 73 (22): 6945-6976. (Nov 1968) |
ⓘ Iron var. Kamacite Formula: (Fe,Ni) Reference: Keil, K. (1968). Mineralogical and Chemical Relationships among the Enstatite Chondrites. Journal of Geophysical Research 73 (22): 6945-6976. (Nov 1968) |
ⓘ Oldhamite Formula: (Ca,Mg)S Reference: Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966) |
ⓘ 'Plagioclase' Formula: (Na,Ca)[(Si,Al)AlSi2]O8 Description: Albitic (An16) Reference: Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966) |
ⓘ Schreibersite Formula: (Fe,Ni)3P Reference: Keil, K. (1968). Mineralogical and Chemical Relationships among the Enstatite Chondrites. Journal of Geophysical Research 73 (22): 6945-6976. (Nov 1968) |
ⓘ Sinoite Formula: Si2N2O Reference: Keil, K., Andersen, C.A. (1965) Occurrences of Sinoite, Si2N2O, in Meteorites. Nature, 207, 745. |
ⓘ Troilite Formula: FeS Reference: Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Graphite | 1.CB.05a | C |
ⓘ | Iron | 1.AE.05 | Fe |
ⓘ | var. Kamacite | 1.AE.05 | (Fe,Ni) |
ⓘ | Schreibersite | 1.BD.05 | (Fe,Ni)3P |
ⓘ | Sinoite | 1.DB.10 | Si2N2O |
Group 2 - Sulphides and Sulfosalts | |||
ⓘ | Alabandite | 2.CD.10 | MnS |
ⓘ | Daubréelite | 2.DA.05 | Fe2+Cr3+2S4 |
ⓘ | Oldhamite | 2.CD.10 | (Ca,Mg)S |
ⓘ | Troilite | 2.CC.10 | FeS |
Group 9 - Silicates | |||
ⓘ | Enstatite | 9.DA.05 | Mg2Si2O6 |
Unclassified Minerals, Rocks, etc. | |||
ⓘ | 'Plagioclase' | - | (Na,Ca)[(Si,Al)AlSi2]O8 |
List of minerals for each chemical element
C | Carbon | |
---|---|---|
C | ⓘ Graphite | C |
N | Nitrogen | |
N | ⓘ Sinoite | Si2N2O |
O | Oxygen | |
O | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
O | ⓘ Enstatite | Mg2Si2O6 |
O | ⓘ Sinoite | Si2N2O |
Na | Sodium | |
Na | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Mg | Magnesium | |
Mg | ⓘ Oldhamite | (Ca,Mg)S |
Mg | ⓘ Enstatite | Mg2Si2O6 |
Al | Aluminium | |
Al | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | Silicon | |
Si | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Si | ⓘ Enstatite | Mg2Si2O6 |
Si | ⓘ Sinoite | Si2N2O |
P | Phosphorus | |
P | ⓘ Schreibersite | (Fe,Ni)3P |
S | Sulfur | |
S | ⓘ Alabandite | MnS |
S | ⓘ Troilite | FeS |
S | ⓘ Oldhamite | (Ca,Mg)S |
S | ⓘ Daubréelite | Fe2+Cr23+S4 |
Ca | Calcium | |
Ca | ⓘ Plagioclase | (Na,Ca)[(Si,Al)AlSi2]O8 |
Ca | ⓘ Oldhamite | (Ca,Mg)S |
Cr | Chromium | |
Cr | ⓘ Daubréelite | Fe2+Cr23+S4 |
Mn | Manganese | |
Mn | ⓘ Alabandite | MnS |
Fe | Iron | |
Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
Fe | ⓘ Troilite | FeS |
Fe | ⓘ Daubréelite | Fe2+Cr23+S4 |
Fe | ⓘ Schreibersite | (Fe,Ni)3P |
Fe | ⓘ Iron | Fe |
Ni | Nickel | |
Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
Ni | ⓘ Schreibersite | (Fe,Ni)3P |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Krinov, E. L. [Editor] (1958). Meteoritical Bulletin, no. 10, Moscow. (Oct 1958)
Klaus Keil & Christian A. Andersen (1965) Occurrences of Sinoite, Si2N2O, in Meteorites. Nature 207, 745 (14 August 1965)
Mason, B. H. (1966). The Enstatite Chondrites. Geochimica et Cosmochimica Acta 30, 23-30. (Jan 1966)
Keil, K. (1968). Mineralogical and Chemical Relationships among the Enstatite Chondrites. Journal of Geophysical Research 73 (22): 6945-6976. (Nov 1968)
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.
External Links
http://www.lpi.usra.edu/meteor/metbull.php= Meteoritical Bulletin Database
Other Regions, Features and Areas containing this locality
Africa
- East African Rift System (EARS)Zone (Tectonic)
African Plate
- Tanzania CratonCraton
Somali PlateTectonic Plate
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