Publication: Strong Calcite-Like Spectra Cathodoluminescence Emission from Allende Meteorite Cai Phases
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Publication Date
2011
Authors
García Guinea, Javier
Tornos Arroyo, Fernando
Azumendi García, Oscar
Correcher Delgado, Virgilio
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Publisher
Taylor & Francis
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Abstract
Calcium–aluminum-rich inclusions (CAIs) of Allende CV3
chondrite were studied by Environmental Scanning Electron Microscopy
(ESEM), Energy Dispersive Spectrometry (EDS), Backscattering (BS), and
Spectra Cathodoluminescence (CL). CAI minerals show spectra CL curves
exceeding the 450,000 a.u. with a large homogeneity along the white inclusions.
CL curve features fit perfectly with terrestrial patterns of stressed specimens
of weathered marble and limestone in which hydroxyl groups may
be involved. Crypto-clusters of CaCO3, undetectable by means of EPMA,
EDS, and Micro-Raman techniques, coupled to the CAI phases are inferred
from the spectral CL data and from the carbon and calcium contents
provided by the EDS probe.