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Pregled bibliografske jedinice broj: 155423

Nanocrystals of tridymite in opal cavities


Bermanec, Vladimir; Tomašić, Nenad; Karfunkel, Joachim; Scholz, Ricardo; Kniewald, Goran; Jaksch, Heinrich
Nanocrystals of tridymite in opal cavities // Applied Mineralogy, 2004 ICAM-BR / Pecchio et al. (ur.).
Sao Paolo, 2004. str. 525-527 (poster, međunarodna recenzija, sažetak, znanstveni)


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Naslov
Nanocrystals of tridymite in opal cavities

Autori
Bermanec, Vladimir ; Tomašić, Nenad ; Karfunkel, Joachim ; Scholz, Ricardo ; Kniewald, Goran ; Jaksch, Heinrich

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Applied Mineralogy, 2004 ICAM-BR / Pecchio et al. - Sao Paolo, 2004, 525-527

Skup
ICAM 2004

Mjesto i datum
Aguas de Lindoia, Brazil, 19.-22.09.2004

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
opal; tridymite; nanocrystals

Sažetak
Two opal samples were investigated by X-ray diffraction and FESEM. Green opal from Goleš ultramafic rocks was designated as opal-CT. Reddish opal from the Spančevski rid sedimentary sequence was also determined as opal-CT, although it could be considered as a boundary case with opal-C. Both opals contain other mineral phases like sepiolite or kaolinite and hematite. FESEM images showed on both opal samples the presence of cavities filled with spheres. The spheres are covered with hexagonally shaped crystals presumably being tridymite. Common morphological properties of the low and high temperature forms of tridymite cannot unambiguously confirm the high temperature hydrothermal stage in the formation of the investigated opal-tridymite association.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekti:
0098132
0119420

Ustanove:
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Profili:

Avatar Url Goran Kniewald (autor)

Avatar Url Vladimir Bermanec (autor)

Avatar Url Nenad Tomašić (autor)


Citiraj ovu publikaciju:

Bermanec, Vladimir; Tomašić, Nenad; Karfunkel, Joachim; Scholz, Ricardo; Kniewald, Goran; Jaksch, Heinrich
Nanocrystals of tridymite in opal cavities // Applied Mineralogy, 2004 ICAM-BR / Pecchio et al. (ur.).
Sao Paolo, 2004. str. 525-527 (poster, međunarodna recenzija, sažetak, znanstveni)
Bermanec, V., Tomašić, N., Karfunkel, J., Scholz, R., Kniewald, G. & Jaksch, H. (2004) Nanocrystals of tridymite in opal cavities. U: Pecchio et al. (ur.)Applied Mineralogy, 2004 ICAM-BR.
@article{article, year = {2004}, pages = {525-527}, keywords = {opal, tridymite, nanocrystals}, title = {Nanocrystals of tridymite in opal cavities}, keyword = {opal, tridymite, nanocrystals}, publisherplace = {Aguas de Lindoia, Brazil} }
@article{article, year = {2004}, pages = {525-527}, keywords = {opal, tridymite, nanocrystals}, title = {Nanocrystals of tridymite in opal cavities}, keyword = {opal, tridymite, nanocrystals}, publisherplace = {Aguas de Lindoia, Brazil} }




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