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Parnallee meteorite, Madurai District, Tamil Nadu, India

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Latitude & Longitude (WGS84): 9° 13' 59'' North , 78° 21' 0'' East
Latitude & Longitude (decimal): 9.23333333333, 78.35
Other regions containing this locality:Asia


Ordinary Chondrite, very low-iron (LL3.6; S3; W0)
Fall, 28 Feb 1857

After detonations, two stones (60.8 kg, 16.8 kg) were recovered. Parnallee is a shocked and moderately unequilibrated chondrite. Chondrule varieties include porphyritic and radial olivine and/or pyroxene rich types (OP, POP, PP, RP) up to 3 mm in diameter. Some olivines are unzoned, but zoning is particularly evident in pyroxenes both in matrix and in somewhat exotic inclusions. Small grains of irregular Fe-Ni metal and troilite are present as minor accessories. Mosaicism in olivine is indicative of moderate shock. Phyllo-silicates are indicative of early aqueous alterations.

Mineral List


18 valid minerals.

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References

Binns, R.A. (1970) Pyroxenes from non-carbonaceous chondritic meteorites: Mineralogical Magazine 37(290): 855-669. (June 1970).

Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.

McSween Jr., H.Y. & Patchen, A.D. (1989) Pyroxene thermobarometry in LL-group chondrites and implications for parent body metamorphism: Meteoritics 24 (4): 219-226. (Dec. 1989).

Rubin, A. E. (1990) Kamacite and Olivine in Ordinary Chondrites: Intergroup and intragroup relationships. Geochim. Geochim. et Cosmochim. Acta 54, 1217-1232.

Bridges, J.C., Franchi, I.A., Hutchison, R., Morse, A.D., Long, J.V.P. & Pillinger, C.T. (1995) Cristobalite- and tridymite-bearing clasts in Parnallee (LL3) and Farmington (L5): MAPS 30(6): 715-727. (Nov 1995).

Russell, S.S., Arden, W.A. & Pillinger, C.T. (1996) A carbon and nitrogen isotope study of diamond from primitive chondrites: Meteoritics & Planetary Science 38 (3):251–258. (May 1996).

Jones, R. H. (1996) FeO-rich, porphyritic pyroxene chondrules in unequilibrated ordinary chondrites: Geochimica et Cosmochimica Acta 60(16): 3115-3117, 3120-3138. (Aug 1996).

Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

Brearley, A. J. & Jones, R. H. (1998) Chondritic Meteorites. In: Planetary Materials (Papike, JJ - Ed.), Chapter 3: 1-398: Mineralogical Society of America, Washington, DC, USA.

Bridges, J.C., Franchi, I.A., Sexton, A.S. & Pillinger, C.T. (1999) Mineralogical controls on the oxygen isotopic compositions of UOCs: Geochimica et Cosmochimica Acta 63(6): 945-951. (July 1999).

Lauretta, D. S. & Killgore, M. (2005). A Color Atlas of Meteorites in Thin Sections. Southwest Meteorite Press: Payson, Arizona. 301 pages.

Lauretta, D. S. & McSween Jr., H.Y., Editors (2006). Meteorites and the Early Solar System II. University of Arizona Press: Tucson, Arizona. 943 pages.

Grady, M.M., Pratesi, G. & Moggi-Cecchi, V. (2015) Atlas of Meteorites. Cambridge University Press: Cambridge, United Kingdom. 373 pages.

Lewis, J.A., Jones, R.H. & Brearley, A.J. (2016) Alkali feldspar exsolution in ordinary chondrites: Alkali metasomatism, metamorphism, and cooling rates: 47th Lunar and Planetary Conference: 2559.pdf. [Online]

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