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| Mahadevpur | |||||||||||||||||||||||||
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| Basic information | Name: Mahadevpur This is an OFFICIAL meteorite name. Abbreviation: There is no official abbreviation for this meteorite. Observed fall: Yes Year fell: 2007 Country: India Mass:  70.5 kg | ||||||||||||||||||||||||
| Classification history: |
This is 1 of 499 approved meteorites classified as H4/5. [show all] Search for other: H chondrites, H chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7) | ||||||||||||||||||||||||
| Comments: | Approved 28 Aug 2008 | ||||||||||||||||||||||||
| Writeup |
Writeup from MB 94:
Mahadevpur 27°40’N, 95°47’E Mahadevpur, Near Namsai Town, Arunachal Pradesh, India Fall: 21 February 2007, 9:10 Indian Standard Time (IST) Ordinary chondrite (H4/5) History: The fall was witnessed by many people. The meteoroid broke up mid air and fell as several pieces. At least 4 large fragments were collected; the largest is ~60 kg and is in private hands. A 3.4 kg piece fell through the roof of a house and into the living room, in Mahadevpur, Arunachal Pradesh, and was collected by Guwahati University, Assam. Physical and chemical characteristics: (A. C. Mazumdar, Guwahati University, Assam, India and S. V. S. Murty, PRL, Ahmedabad) The meteorite is a heterogeneous aggregate of chondrules of varying types (dominantly porphyritic) and the matrix made up of mostly chondrules fragments. Chondrule sizes range from 250 to 1300 μm. The various mineral phases are olivine (Fa19), orthopyroxene (En82 Fs17 Wo1), clinopyroxene (En57 Fs8 Wo35), albitic plagioclase (Ab87 Or3 An10), kamacite, taenite, apatite and rare chromite. Olivine grains both in chondrules and matrix are homogeneous. Chemical composition and Δ17O (0.857‰) match with H chondrites. Low amounts of trapped noble gases suggest that Mahadevpur belongs to metamorphic grade 4/5. Shock stage is S1. Classification: Ordinary chondrite (H4/5) Type specimen: The main mass (~3.2 kg) and thin sections are with Guwahati University (GauU); A small mass is with PRL, on loan from GauU. Total known weight is 70.5 kg | ||||||||||||||||||||||||
| Data from: MB94 Table 5 Line 5: |
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| Institutions and collections |
PRL: Physical Research Laboratory, Navrangpura, Ahmedabad, 380 009, India; Website (institutional address; updated 6 Dec 2017) GauU: Gauhati University Guwahati, Assam, India (institutional address) |
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| References: | Published in Meteoritical Bulletin, no. 94, MAPS 43, 1551-1588 (2008)
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Geography:
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Statistics: This is the only approved meteorite from Arunachal Pradesh, India This is 1 of 145 approved meteorites from India (plus 10 unapproved names) (plus 2 impact craters) | ||||||||||||||||||||||||
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