Nedagolla meteorite, Vizianagaram District, Uttarandhra Region, Andhra Pradesh, Indiai
Regional Level Types | |
---|---|
Nedagolla meteorite | Meteorite Fall Location |
Vizianagaram District | District |
Uttarandhra Region | Region |
Andhra Pradesh | State |
India | Country |
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Latitude & Longitude (WGS84):
18° 40' 59'' North , 83° 28' 59'' East
Latitude & Longitude (decimal):
Locality type:
Meteorite Class:
Meteoritical Society Class:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Pārvatipuram | 52,085 (2015) | 12.7km |
Bobbili | 52,843 (2015) | 17.9km |
Pālkonda | 29,378 (2015) | 30.0km |
Rāzām | 27,832 (2015) | 32.0km |
Sālūr | 50,206 (2015) | 34.6km |
Anomalous Iron (I-ung)[Ni-poor ataxite]
Fall, 23 Jan 1870; 4.5 kg
A fireball traveling from north to south, accompanied by a thunderous detonation and subsequent rumblings, was observed to fall as it created a 50 cm deep hole while apparently injuring several people. The recovered mass [16 x 11 x 6 cm] was first taken to a local temple, but was subsequently placed under control of the British colonial authorities. The fallen mass of Fe-Ni metal (~6% Ni) is clearly meteoritic, but it is quite unusual in several ways — texturally, mineralogically, and geochemically. Severe pre-terrestrial shock-melting followed by almost immediate cooling has left a very poorly defined 'dendritic' or ataxic mineralogical structure. Kamacite is revealed by X-ray diffraction, microscopic traces of taenite, and disordered martensite are common, but there are few signs of the usual hexahedral or octahedral patterns found in most irons. Minor amounts of reduced graphite, cohenite, and daubréelite are also observed. However, both schreibersite and the usually ubiquitous troilite were not observed (Cf. Buchwald, 1975). Geochemical anomalies include dissolved Si (0.14%) in the Fe-Ni metal and, at the time, the lowest observed Ge content of any iron meteorite. Fe-oxides (magnetite & wüstite) are found in the relatively intact fusion crust.
By the end of 2014, over 11% of all fully classified irons have been classified as 'ungrouped' [117 of over 1000]. The ungrouped irons clearly do not belong to any of the dozen or so classified groups and are believed to fragments of perhaps 20-50 disrupted asteroidal cores. However, only 4 of these ungrouped irons are witnessed falls. Theoretically, such relatively pristine extraterrestrial material should be easier to understand than the usual weathered iron meteorite recovered years or even centuries after its unrecorded fall. Disentangling the history of the Nedagolla skyfall, however, may provide even more conundrums than the average iron meteorite — weathered or newly fallen.
Most of the original mass (~4 kg) is at Natural History Museum in London.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsMineral List
7 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:
ⓘ Cohenite Formula: Fe3C Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Daubréelite Formula: Fe2+Cr3+2S4 Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Graphite Formula: C Description: Tiny graphite spherules are apparently a primary crystallization product (Buchwald, 1975). Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Iron Formula: Fe Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Iron var. Kamacite Formula: (Fe,Ni) Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Iron var. Martensite Formula: Fe Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Taenite Formula: (Fe,Ni) Reference: Miyake, G. T. & Goldstein, J. I. (1974) Nedagolla, a remelted iron meteorite: Geochimica et Cosmochimica Acta 38 (5): 747-748. (May 1974; Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
ⓘ Wüstite Formula: FeO Description: In the fusion crust
Reference: Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages. |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
ⓘ | Cohenite | 1.BA.05 | Fe3C |
ⓘ | Graphite | 1.CB.05a | C |
ⓘ | 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 | |||
ⓘ | Daubréelite | 2.DA.05 | Fe2+Cr3+2S4 |
Group 4 - Oxides and Hydroxides | |||
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | Wüstite | 4.AB.25 | FeO |
List of minerals for each chemical element
C | Carbon | |
---|---|---|
C | ⓘ Cohenite | Fe3C |
C | ⓘ Graphite | C |
O | Oxygen | |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Wüstite | FeO |
S | Sulfur | |
S | ⓘ Daubréelite | Fe2+Cr23+S4 |
Cr | Chromium | |
Cr | ⓘ Daubréelite | Fe2+Cr23+S4 |
Fe | Iron | |
Fe | ⓘ Taenite | (Fe,Ni) |
Fe | ⓘ Cohenite | Fe3C |
Fe | ⓘ Iron var. Kamacite | (Fe,Ni) |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Fe | ⓘ Iron var. Martensite | Fe |
Fe | ⓘ Daubréelite | Fe2+Cr23+S4 |
Fe | ⓘ Wüstite | FeO |
Fe | ⓘ Iron | Fe |
Ni | Nickel | |
Ni | ⓘ Taenite | (Fe,Ni) |
Ni | ⓘ Iron var. Kamacite | (Fe,Ni) |
References
Sort by
Year (asc) Year (desc) Author (A-Z) Author (Z-A)Miyake, G. & Goldstein, J. I. (1973) The Nedagolla meteorite. Meteoritics 8(1): 57-58. (March 1973)
Miyake, G. T. & Goldstein, J. I. (1974) Nedagolla, a remelted iron meteorite: Geochimica et Cosmochimica Acta 38 (5): 747-748. (May 1974)
Buchwald, V. F. (1975) Handbook of Iron Meteorites. University of California Press. 1418 pages.
Graham, A. L., Bevan, A. W. R. & Hutchison, B. (1985) Catalogue of Meteorites (4/e). University of Arizona Press: Tucson.
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
http://www.lpi.usra.edu/meteor/metbull.php?sea=Nedagolla&sfor=names&ants=&falls=yes&valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=name&categ=Iron+meteorites&mblist=All&rect=&phot=&snew=0&pnt=Normal%20table&code=16935
http://evols.library.manoa.hawaii.edu/handle/10524/33767
http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35864/vol3-Murn-Ned(LO).pdf#page=14
http://www.lpi.usra.edu/meteor/metbull.php?sea=Nedagolla&sfor=names&ants=&falls=yes&valids=&stype=contains&lrec=50&map=ge&browse=&country=All&srt=name&categ=Iron+meteorites&mblist=All&rect=&phot=&snew=0&pnt=Normal%20table&code=16935
http://evols.library.manoa.hawaii.edu/handle/10524/33767
http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/35864/vol3-Murn-Ned(LO).pdf#page=14
Other Regions, Features and Areas containing this locality
AsiaContinent
Indian Plate (India Plate)Tectonic Plate
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Nedagolla meteorite, Vizianagaram District, Uttarandhra Region, Andhra Pradesh, India