Evidence of shock metamorphism in Bursa L6 chondrite: Raman and Infrared Spectroscopic Approach


Ünsalan O. , Altunayar Ünsalan Ç.

International Meteor Congress 2019, Berlin, Almanya, 3 - 06 Ekim 2019, ss.18

  • Basıldığı Şehir: Berlin
  • Basıldığı Ülke: Almanya
  • Sayfa Sayısı: ss.18

Özet


The main goal of this study is to identify the mineralogi

al

omposition of the Bursa L6 stony

hon-

drite and investigate its sho

k stage by Raman and Fourier Transform Infrared spe

tros

opi

te

hniques.

The very well-known

hara

teristi

doublet band of olivine was dete

ted at 820/852

m−1 in the Raman

spe

trum and the forsterite

omposition of the Bursa L6

hondrite was derived to be 75%. The Raman

spe

tros

opi

part of this study showed the presen

e of plagio

lase feldspar pyroxene signals, ringwood-

ite (high-pressure polymorph of olivine), maskelynite and augite. From Infrared spe

tros

opi

data we

obtained, the existen

e of maskelynite was

onrmed. A detailed dis

ussion was given on the possible

sho

k stage of the Bursa

hondrite, based on the band proles in Raman spe

trum we suggest pressures

at least higher than 35 GPa.