Crystal chemistry of zinc incorporation in strunzite-group minerals containing zeolitic water

database, nuove specie, discrediti,
ridefinizioni, classificazioni, ecc.
Rispondi
Avatar utente
Marco E. Ciriotti
Messaggi: 23495
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Crystal chemistry of zinc incorporation in strunzite-group minerals containing zeolitic water

Messaggio da Marco E. Ciriotti » gio 27 ott, 2016 15:30

Prossima pubblicazione.

Referenza:
▪ Grey, I.E., Keck, E., McRae, C.M., Glenn, A.M., Kampf, A.R., Nash, B.P., Mills, S.J. (2017): Crystal chemistry of zinc incorporation in strunzite-group minerals containing zeolitic water. Mineralogical Magazine, 81, (in press).

Abstract:
A comparative study is presented of the chemistry and crystallography of zinc-bearing strunzites from Hagendorf Süd, Bavaria, Germany and the Sitio do Castelo mine, Folgosinho, Portugal. Electron microprobe analyses of samples from the two localities show quite different cation substitutions. The Hagendorf Süd mineral is a Zn-bearing ferristrunzite, with compositional zoning due to Zn2+ replacing predominantly Fe3+ as well as minor Mn2+, whereas the Portugese mineral is a Zn-bearing strunzite, in which Zn2+ replaces Mn2+, with minor replacement of Fe3+ by Mn3+. Zincostrunzite, with dominant Zn in the interlayer octahedrally coordinated site, is a new strunzite group mineral that has been characterised at both locations. Analysis of single-crystal synchrotron data for zinc-bearing ferristrunzite and zincostrunzite crystals from Hagendorf Süd show that the structures of both minerals contain zeolitic water in the interlayer region. The formula for strunzite-group minerals containing the zeolitic water is MFe3+2(PO4)2(OH)2·6.5H2O, M = Fe, Mn, Zn. This formulation agrees with that found for zincostrunzite from the Sitio do Castelo mine, but differs from that previously reported for strunzite, MFe3+2(PO4)2(OH)2·6H2O, which has no interlayer water. Interestingly, the zincostrunzites from the two localities differ in the location of the interlayer water molecule, with a corresponding difference in the H-bonding.
Marco E. Ciriotti

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

Avatar utente
Marco E. Ciriotti
Messaggi: 23495
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Re: Crystal chemistry of zinc incorporation in strunzite-group minerals containing zeolitic water

Messaggio da Marco E. Ciriotti » mar 05 set, 2017 19:03

Pubblicazione effettuata.

Referenza:
▪ Grey, I.E., Keck, E., McRae, C.M., Glenn, A.M., Kampf, A.R., Nash, B.P., Mills, S.J. (2017): Crystal chemistry of zinc incorporation in strunzite-group minerals containing zeolitic water. Mineralogical Magazine, 81, 1051-1062.
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 7 ospiti