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Bells meteorite, Grayson Co., Texas, USA

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Latitude & Longitude (WGS84): 33° 36' North , 96° 28' West
Latitude & Longitude (decimal): 33.60000,-96.46667
Non-native locality type:Meteorite
Meteorite Class:Ungrouped C2 chondrite meteorite
Meteoritical Society Class: C2-ung
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:Cfa : Humid subtropical climate


Classification: Carbonaceous Chondrite, Ungrouped (C2-ung; S1)
Fall, 9 Sept 1961; 283 g, 7 pieces

After a fireball and detonations over northeastern Texas, the next day a single fragment was recovered which had struck a roof. The other fragments were picked up over the next six months (and subsequent weathering). The meteorite was immediately recognized as a Carbonaceous Chondrite, was first labeled as a more-or-less normal Type II meteorite, and then as a CM (Mighei-like) Carbonaceous Chondrite as classification standards evolved. Indeed, like many CMs Bells has its expected complements of chondrules, clasts, fine-grained materials, and (small) refractory inclusions. But, as more studies were made it became clear that Bells’ bulk chemistry and isotopic ratios do not match any of the 8 presently defined Carbonaceous Chondrite groups.

Indeed, Bells is quite unusual in several respects. Its microscopic niches contain several varieties of titanium oxide (including well-ordered ‘Magneli phases’), some presolar aromatic globules [similar to those found in Comet Wild 2], and minute pockets of very anomalous Nitrogen [unusually high in N-15].


Mineral List


12 valid minerals.

Meteorite/Rock Types Recorded

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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.

References

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Monnig, O. E. (1963). The Bells, Texas, Meteorites. Meteoritics 2, #1, p. 67. (May 1963)
Davis, A. M. & Olsen, E. (1984). Carbonaceous Chondrite Related to c1 and c2 Chondrites (Abstract). Lunar and Planetary Science XV, 190-191. (March 1984)
Brearley, A. J. (1993). Occurrence and possible significance of rare Ti oxides (Magneli phases) in carbonaceous chondrite matrices. Meteoritics 28 (4): 590-595. (Sept 1993)
Kallemeyn, G. W. (1995) Bells and Essebi: To Be or Not To Be (CM). Meteoritics 30 (5): 525-526. (Sept 1995)
Brearley, A. J. & Jones, R. H. (1998). Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA.
Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town.
Clemett, S. J., Messenger, S., Nakamura-Messenger, K. & Thomas-Keprta, K. L. (2014): Coordinated Chemical and Isotopic Imaging of Bells (CM2) Meteorite Matrix. 45th Lunar and Planetary Science Conference. LPI Contribution No. 1777, p. 2896. (March 2014).
Howard, K.T., Alexander, C.M.O'D, Schrader D.L. & Dyl K.A. (2015) Classification of hydrous meteorites (CR, CM, and C2 ungrouped) by phyllosilicate fraction: PSD-XRD modal mineralogy and planetismal environments. Geochimica et Cosmochimica Acta 149, 206-222.

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