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Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Una partícula de polvo interplanetario vinculada directamente a los meteoritos tipo CM y un origen asteroidal
Science (New York, N.Y.)
|February 1, 1991
Resumen
Toquilinita, un mineral raro que se encuentra en el polvo espacial, fue identificado en una partícula de polvo interplanetario (IDP). Este descubrimiento vincula los PDI con meteoritos específicos, lo que sugiere que parte del polvo se origina en asteroides.
Área de la Ciencia:
- La mineralogía es la Mineralogía.
- Cosmoquímica es la cosmoquímica.
- Ciencias planetarias Ciencias planetarias.
Sus antecedentes:
- Las partículas de polvo interplanetario (IDP) son materiales extraterrestres recogidos en la estratosfera de la Tierra.
- La toquilinita es un mineral ordenado de capas mixtas que contiene Mg, Al, Fe, Ni, S y O.
- Este mineral se ha encontrado previamente en meteoritos de condritas carbonáceas CM.
Objetivo del estudio:
- Para identificar la composición mineralógica de un IDP.
- Para establecer un vínculo petrogenético entre los IDP y las clases específicas de meteoritos.
- Para determinar el origen de ciertos PDI estratosféricos.
Principales métodos:
- Análisis mineralógico de un IDP.
- Comparación de la mineralogía del IDP con las composiciones conocidas de meteoritos.
Principales resultados:
- La toquilinita fue identificada en un IDP.
- Este hallazgo establece un vínculo directo entre los IDP de silicato en capas y las condritas carbonáceas CM.
- La presencia de tochilinita en un PID indica un origen asteroidal para algunos PID.
Conclusiones:
- Algunos PID recogidos en la estratosfera tienen un origen asteroidal.
- Es probable que los materiales con mineralogía CM no sean abundantes entre los asteroides productores de polvo.
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