* Astronomy

Blobrana · L

RE: Dergaon meteorite

Blobrana · L

Title: Thermoluminescence Studies of Dergaon Meteorite
Authors: P. Dutta and K. Duorah

A multiple fall of stony meteorite occurred near the town of Dergaon in Assam, India, on March 2, 2001. Preliminary Mineralogical and Petrologic studies suggested that the meteorite belongs to the H5 Group. Here in this paper we represent Thermoluminescence studies of Dergaon meteorite in order to have its thermal history. The given work consists of an estimation of the quantitative characteristics of thermal and /or shock thermal influence on substance of this meteorite as well as degree of structural change in matter during formation and subsequent evolution of their parent bodies. Here we get the intensity of TL glow in equilibrium changes more than two order of magnitude.

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Blobrana · L

Title: Spectroscopic investigation of the Dergaon meteorite with reference to 10 µm and 20 µm bands
Authors: A. Gohain Barua, B.R. Boruah, S. Bhattacharyya, G.D. Baruah:

Analysis of a part of the meteorite which fell at Dergaon (India) on March 2, 16.40 local time (2001) is presented with the help of FTIR, absorption and atomic spectra. The FTIR spectrum exhibits prominent absorption bands in the region 800-1100 cm^-1, originating from the valence vibration of SiO4, a basic component of the silicate lattice.