Pseudomalachite from the Zadné Breziny occurrence near Gemerská Poloma (Slovakia)

database, nuove specie, discrediti,
ridefinizioni, classificazioni, ecc.
Rispondi
Avatar utente
Marco E. Ciriotti
Messaggi: 31675
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Pseudomalachite from the Zadné Breziny occurrence near Gemerská Poloma (Slovakia)

Messaggio da Marco E. Ciriotti » lun 06 set, 2021 13:39

Referenza:
▪ Števko, M., Sejkora, J., Dolníček, Z. (2020): Pseudomalachit z lokality Zadné Breziny pri Gemerskej Polome (Slovenská republika). Bulletin Mineralogicko-Petrologickeho Oddeleni Narodniho Muzea v Praze, 28, 177-184.

Abstract:
A new occurrence of pseudomalachite was recently discovered at the Zadné Breziny copper occurrence near Gemerská Poloma, Rožňava Co., Košice Region, Slovakia. It forms dark green rich coatings and crusts, which consist of individual hemispherical aggregates up to 7 mm in size. Pseudostalactites up to 6 mm in size were also rarely observed. Pseudomalachite occurs in fractures and cavities of the quartz gangue or in fractures of the wall rock. It is associated with malachite, cuprite and native copper. The refined unit-cell parameters (for the monoclinic space group P21/c) are a 4.4805(5) Å, b 5.7504(6) Å, c 17.045(2) Å, β 91.12(1)° and V 439.06(6) Å3. Except of dominant contents of Cu and P only minor amounts of Al (up to 0.04 apfu), Fe (up to 0.02 apfu), As (up to 0.07 apfu) and S (up to 0.01 apfu) were detected in studied samples of pseudomalachite from the Zadné Breziny occurrence.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

Rispondi

Chi c’è in linea

Visitano il forum: Bing [Bot] e 48 ospiti