Naslov
Solid solutions in the Epidote group of minerals: Pb and REE rich Piemontite from Nezilovo, Macedonia

Autori
Bermanec, Vladimir ; Armbruster, Thomas ; Oberhaensli, Roland ; Zebec, Vladimir ; Kniewald, Goran

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

Izvornik
Book of Abstracts / Merlino, S. - Toronto : International Mineralogical Association, 1998

Skup
17th General Meeting of the International Mineralogical Association

Mjesto i datum
Toronto, Kanada, 09.08.1998. - 14.08.1998

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Pb- and REE-rich piemontite; epidote group; Nežilovo; Macedonia

Sažetak
An unusual Pb- and REE-rich epidote group mineral , related to piemontite was found near Nezilovo, Macedonia, within a micaschist complex in the upper part of the Babuna river, ca 40 km southwest of Skopje. The rock contains red mica, quartz, ardennite, gahnite and piemontite. The piemontite from Nezilovo is deep red in colour, almost black, with an adamantine luster and greyish-pink streak. It is brittle, with an uneven fracture and with no observable cleavage. The crystals often show twinning parallel to 100 and in this case display sections of isometric shape. Monocrystals are flattened in 001 and elongated parallel to b. They are optically negative, the refractive indices being around 1.8. The optical orientation is similar to that of allanite.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

POVEZANOST RADA