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Indarch meteorite (Elizabethpol; Gindorcha; Glindorcha; Indarh; Indarkh; Schuscha; Suscha [NHM cat.]), Shusha, Ağcabədi District (Aghjabadi), Azerbaijan

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Latitude & Longitude (WGS84): 40° 4' 10'' North , 47° 12' 16'' East
Latitude & Longitude (decimal): 40.0694444444, 47.2044444444
Name(s) in local language(s):Индарх, Гиндарх
Other/historical region names associated with this locality:Hindarkh, Shusha Uyezd, Elizavetpol Governorate of Russian Empire
Other regions containing this locality:Asia


Enstatite chondrite, class EH4, from an observed fall; weight 27 kg, Fall 8:10pm April 7, 1891.

In 1891 the Indarch meteorite, a single stone, fell and buried itself in the soil to a depth of 18 cm. Besides the pyroxene (enstatite) in chondrules and clasts, the meteorite contains nodular masses of Fe-Ni metal and troilite. However, as reported by Merrill (1915), it also contains oldhamite — one of the several unusual minerals characteristic of the highly reduced Enstatite Chondrites and Achondrites. The Enstatite meteorites contain a number of sulfides, nitrides and other phases rarely if ever found on earth. Indarch itself is classified as an EH Enstatite Chondrites — a group further characterized by small chondrules, abundant Fe-Ni metal, and the presence of niningerite (MnS) and perryite (Fe-Ni silicide).

Indarch is the second largest EH fall (Abee is larger) and has provided researchers a more diverse suite of minerals than most Enstatite Chondrites. It has been the host for the discovery for four of the minerals listed here. In addition, it contains a number of minute presolar minerals and phases produced by ancient red giants and/or supernovae. These presolar phases include nanodiamonds, nierite, spinel and other phases too small for definitive mineralogical identification (e.g. silicon carbide).

Mineral List


29 valid minerals. 4 (TL) - type locality of valid minerals.

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References

Merrill, G. P. (1915). Notes on the Composition of the Indarch, Russia, meteoritic stone. Proceedings of the United States National Museum 49, 109-112.
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)
Ramdohr, P. (1973). The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London: New York. 245 pages.
Mason, B. H. (1972). The Mineralogy of Meteorites. Meteoritics 7, #3, 309-326.
Baryshnikova, G. V., Ignatenko, K. I. & Lavrukhina, A. K. (1991). Mineral Compositions and assemblages in Chondrules of Indarch EH4 Chondrite. Lunar and Planetary Science Conference XXII, page 55. (March 1991)
Gao, X., Nittler, L. R., Swan, P. D. & Walker, R. M. (1995) Presolar Grains in Indarch, Meteoritics 30 (5): 508 (Sept 1995)
Russell, S. S., Ott, U., Alexander,C. M. O'd., Zinner, E. K., Arden, J. W. & Pillinger, C. T. (1997) Presolar silicon carbide from the Indarch (EH4) meteorite: Comparison with SiC populations from other meteorite classes, Meteoritics 32 (5), 719-732 (Sept 1997).
Fisenko, A.V. and L.F. Semenova (1997) On the Selection of Chondrites for Studying Interstellar Diamond. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences.
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. 690 pages.
Zinner, E., Gyngard, F. & Nittler, L. R. (2010) Automated C and Si Isotopic Analysis of Presolar SiC Grains from the Indarch Enstatite Chondrite, Lunar and Planetary Science Conference XXXXI. LPI Contribution #1533, p.1359. (March 2010)

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