Dhajala meteorite, Surendranager District, Gujarat, India
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| Latitude & Longitude (WGS84): | 22° 22' 40'' North , 71° 25' 37'' East |
|---|---|
| Latitude & Longitude (decimal): | 22.3777777778, 71.4272222222 |
| Erratic type: | Meteorite |
Ordinary chondrite, unequilibrated (H3.8;S1;W0)
Fall, 28 January 1976; 45 kg, ~300 fragments
A bright fireball — much brighter than a full moon — ended with an even brighter flash, two extremely loud detonations, and a shower of crusted meteoritic stones spread over an 18 km long ellipse. The largest of the many fragments was a 12 kg stone. The Dhajala meteorite is an agglomeration of chondrules (~30 vol%) and clasts set in a fine-grained matrix. Chondrules (GO, GOP, POP), clasts, and matrix are rich in olivine, orthopyroxene, sparse clinopyroxene, and partially devitrified glass. In addition to the dominant, mostly equilibrated olivine (Fa~79) and, largely unequilibrated orthopyroxene (Fs2-32), a number of other silicates are found in various quantities (e.g., plagioclase, silica, forsterite). Opaques such as Fe-Ni metal [~20%], troilite, chromite are likewise present, particularly in the interstices of the matrix. A few CAIs and interstellar grains have also been reported.
Dhajala is one of the 41 ordinary chondrite falls listed with the Meteoritical Bulletin Database (as of 2015). Devgaon and Dhajala, both recovered in Indian, are the only witnessed H3.8 ordinary chondrite falls. The Dhajala main mass (33 kg) has been housed with the Geological Survey of India in Calcutta.
Mineral List
17 valid minerals.
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References
Bhandari, N., Lal, D., Trivedi, J.R. & Bhatnagar, A. (1976). The Dhajala meteorite shower. Meteoritics 11 (2), 137-147. (June 1976).
Noonan, A.F., Fredriksson, K., Jarosewich, E. & Brenner, P. (1976). Mineralogy and bulk, chondrule, size-fraction chemistry of the Dhajala India, chondrite: Meteoritics 11 (4), 340-343. (Dec 1976)
Das Gupta, S.P., Sen Gupta, P.R., Dube, A., Sen Gupta, N.R. & Das Gupta, D.R. (1978) The Dhajala Meteorite: Mineralogical Magazine 42 (324): 493-497. (Dec 1978)
Boynton, W.V., Hill, D.H., Wark, D.A. & Bischoff, A. (1983) Trace Elements in Ca, Al-Rich Chondrules in the Dhajala (H3) Chondrite: Meteoritics 18 (4): 270-271. (Dec 1983).
Perron, C., Bourot-Denise, M.,Marti, K., Kim, J. S. & Crozaz, G. (1992) The Metal-Phosphate Connection in Chondrites: Meteoritics 27(3): p. 275. (July 1992).
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.
Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).
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]
Noonan, A.F., Fredriksson, K., Jarosewich, E. & Brenner, P. (1976). Mineralogy and bulk, chondrule, size-fraction chemistry of the Dhajala India, chondrite: Meteoritics 11 (4), 340-343. (Dec 1976)
Das Gupta, S.P., Sen Gupta, P.R., Dube, A., Sen Gupta, N.R. & Das Gupta, D.R. (1978) The Dhajala Meteorite: Mineralogical Magazine 42 (324): 493-497. (Dec 1978)
Boynton, W.V., Hill, D.H., Wark, D.A. & Bischoff, A. (1983) Trace Elements in Ca, Al-Rich Chondrules in the Dhajala (H3) Chondrite: Meteoritics 18 (4): 270-271. (Dec 1983).
Perron, C., Bourot-Denise, M.,Marti, K., Kim, J. S. & Crozaz, G. (1992) The Metal-Phosphate Connection in Chondrites: Meteoritics 27(3): p. 275. (July 1992).
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.
Grady, M.M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge; New York; Oakleigh; Madrid; Cape Town. 689 pages.
Wlotzka, F. (2005) Cr spinel and chromite as petrogenetic indictors in ordinary chondrites: Equilibrium temperatures of petrologic type 3.7 to 6. Meteoritics & Planetary Science 40 (11): 1673-1702. (Nov 2005).
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]
External Links
http://www.lpi.usra.edu/meteor/metbull.php - Meteoritical Bulletin Database
http://www.lpi.usra.edu/meteor/metbull.php?code=6698 -Dhajala@MetBullDatabase
http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5629097 -photo
http://www.minersoc.org/pages/Archive-MM/Volume_42/42-324-493.pdf -Dhajala@MinMag
http://www.hou.usra.edu/meetings/lpsc2016/pdf/2559.pdf - Alkali feldspar
http://www.lpi.usra.edu/meteor/metbull.php?code=6698 -Dhajala@MetBullDatabase
http://www.lpi.usra.edu/meteor/get_original_photo.php?recno=5629097 -photo
http://www.minersoc.org/pages/Archive-MM/Volume_42/42-324-493.pdf -Dhajala@MinMag
http://www.hou.usra.edu/meetings/lpsc2016/pdf/2559.pdf - Alkali feldspar
