Anisotropy of absorption bands in some lunar, meteoritic, and terrestrial pyroxenes

Autor: Alvin J. Cohen
Rok vydání: 1973
Předmět:
Zdroj: The Moon. 7:307-321
ISSN: 1573-0794
0027-0903
DOI: 10.1007/bf00564637
Popis: The optical anisotropy of individual spin-forbidden transitions of Fe3+ and Fe2+ ions and spin-allowed transitions of Ti3+ and of Fe2+ ions are observed in complex clinopyroxene crystals in lunar rock in both the pigeonite core and the augite overgrowth. Spectral bands are compared to similar ones in terrestrial augite from Maui, Hawaii, meteoritic augite in the Angra dos Reis achondrite, meteoritic shocked hypersthene in the Tatahauine achondrite and meteoritic diopside in the Nakhla achondrite.
Databáze: OpenAIRE