Natural Irradiation Damage in Ivory Coast Diamonds

Autor:	H. J. Milledge, H. O. A. Meyer, E. Nave
Rok vydání:	1965
Předmět:	Multidisciplinary Materials science Spots engineering Mineralogy Diamond Astrophysics Irradiation engineering.material
Zdroj:	Nature. 206:392-392
ISSN:	1476-4687 0028-0836
DOI:	10.1038/206392a0
Popis:	SOME Ivory Coast diamonds lent to us by Dr. D. R. Grantham showed dark green patches over almost their entire surface. One specimen was fragmented and was found to consist of clear white diamond with a rather well-defined green skin about 0.02 mm thick. A rotation photograph of one large diamond of this type showed weak streaks extending from the Bragg spots on the low-angle (high-spacing) side, the effect being especially marked at high angles (that is, for the {331} copper Kα reflexions). A second rotation photograph taken after remounting in a different setting showed the same effect, Laue photographs taken with white+characteristic CuK radiation showed the triangles of spots and streaks typical of Type I diamonds, but showed also ‘thermal’ diffuse spots which were abnormally intense.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::54dc5cd0d68befc790065f59705a8633 https://doi.org/10.1038/206392a0 Zobrazit plný text záznamu