AN APPLICATION OF THE POINT-DIPOLE MODEL TO THE PROBLEM OF OPTICAL ANOMALIES IN GRANDITE GARNETS

dc.contributor.author	Shtukenberg A.G.
dc.contributor.author	Popov D.Y.
dc.contributor.author	Punin Y.O.
dc.date.accessioned	2021-06-10T12:09:27Z
dc.date.available	2021-06-10T12:09:27Z
dc.date.issued	2002
dc.identifier	https://elibrary.ru/item.asp?id=13400520
dc.identifier.citation	Mineralogical Magazine, 2002, 66, 2, 275-286
dc.identifier.issn	0026-461X
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/28930
dc.description.abstract	The origin of anomalous birefringence in grossular-andradite (grandite) garnets is considered. Using the point-dipole model we have calculated the anomalous optical indicatrix for four crystals (three from the paper by Takéuchi et al. (1982) and one studied previously by the present authors). The calculated indicatrix is in good agreement with the observed one. This suggests that the origin of anomalous birefringence in grandite garnets is due to Al/Fe ordering. Interrelations between the observed optical indicatrix, the structure of the growing face, the site occupancy in the crystal structure and the calculated optical indicatrix suggest a growth origin of Fe/Al ordering in grandite garnets and confirm the growth dissymmetrization hypothesis.
dc.title	AN APPLICATION OF THE POINT-DIPOLE MODEL TO THE PROBLEM OF OPTICAL ANOMALIES IN GRANDITE GARNETS
dc.type	Статья

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