* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: Kendrapara meteorite


L

Posts: 131433
Date:
RE: Kendrapara meteorite
Permalink  
 




__________________


L

Posts: 131433
Date:
Permalink  
 

Title: Spectacular fall of the Kendrapara H5 chondrite
Authors: Dhingra, D., Bhandari, N., Shukla, P. N., Murty, S. V. S., Mahajan, R. R., Ballabh, G. M., ,

An extremely bright fireball was seen for over 250 km near the eastern coast of India in the evening sky on September 27, 2003. In a rare observation, the fireball was seen by two airline pilots, providing direction of the trail with reasonable accuracy, consistent with ground-based observations. A few fragments of the meteorite were subsequently recovered along the end of the trail in different parts of Kendrapara district (20°30 N; 86°26 E) of Orissa. Based on petrography and chemical composition, the meteorite is classified as H5 chondrite.

Read more



__________________


L

Posts: 131433
Date:
Permalink  
 

Fell 2003 September 27 1830 IST
Ordinary Chondrite (H4-5)
A brilliant fireball with intense greenish hue appeared in the northern sky and progressed towards southern horizon and was observed by a large number of people in the southern part of the state of West Bengal and coastal Orissa. The event led to a multiple fall along the coastal Orissa. Three pieces of meteorite were retrieved by the Geological Survey of India (GSI) from Subarnapur village (20° 32' 22'' N: 86° 42' E), East Suniti village (20° 27' 30'' N: 86° 43' 15'' E) and West Suniti village (20° 27' 45'' N: 86° 42' 10'' E) in the Kendrapada district of Orissa; the weights of the recovered fragments are 490.2 g, 719 g and 5460 g, respectively. The meteorite samples are dark on unbroken surface and light coloured on broken surface where metals are readily visible. Rusting is conspicuous on the broken surface and may be attributed to the wet environment of fall. The main mass of the meteorite has incomplete tabular polyhedral shape. Thin section study (B. K. Chattopadhyay and A.P.Thapliyal, GSI) shows Kendrapada meteorite is essentially composed of olivine, pyroxene, abundant Fe-Ni metal, troilite and rare feldspar. Chondrules of varying shape and sizes and texture are present but are few in number and range in size from 0.15 mm to 0.5 mm. Fa content in olivine varies between 18.2 and 19.6 (n = 22) with an average Fa content of 18.8. Fs content in Opx varies from 14.4 to 17.4 (n = 17) with an average of 16.4. The matrix is fine-grained and moderately recrystallized. Shock stage is S2. Specimens: type specimen 6 kg, Geological Survey of India, Calcutta ; some fragments are with Government of Orissa, Bhubaneswar, India.
Read more (PDF)



__________________


L

Posts: 131433
Date:
Permalink  
 

The Kendrapara (H4-5) meteorite fell in Orissa, India, on the 27th September, 2003. 
A total mass of 6.67 kg was recovered.

Location 20° 27' 45"N, 86° 42' 10"E



__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard