http://www.cnr.it/ontology/cnr/individuo/prodotto/ID29075
Li-BEARING ARFVEDSONITIC AMPHIBOLES FROM THE STRANGE LAKE PERALKALINE GRANITE, QUEBEC (Articolo in rivista)
- Type
- Label
- Li-BEARING ARFVEDSONITIC AMPHIBOLES FROM THE STRANGE LAKE PERALKALINE GRANITE, QUEBEC (Articolo in rivista) (literal)
- Anno
- 2001-01-01T00:00:00+01:00 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- HAWTHORNE F.C.; OBERTI R.; CANNILLO E.; OTTOLINI L.; ROELOFSEN J.; MARTIN R.M (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
- This paper relates one of the first works on lithium occurrence and systematics in amphiboles from different petrogenetic environments. It was done combining very sophisticated techniques and newly developed analytical procedures (for H and Li by SIMS). Besides lithium, the amphiboles from Strange Lake contain another unusual components, i.e. Zn. Therefore this paper is important for amphibole systematics and for the studies of incorporation and site partitioning of exotic elements in widespread occurring mineral phases. (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
- Impact Factor 0,900 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
- The crystal structures of seven alkali amphiboles from the Strange Lake alkali intrusion have been refined to R values of 12% using single-crystal MoKa X-ray data. Crystals used in the collection of the intensity data were subsequently analyzed by electron- and ion-microprobe methods. Site occupancies were assigned by site-scattering refinement and stereochemical considerations, taking into account the electron- and ion-microprobe analysis of each crystal. These amphiboles are arfvedsonite and manganoan arfvedsonite, and have anomalously low X-ray scattering at the M(3) site. Ion-microprobe analysis shows the presence of significant Li in all of these amphiboles (up to 0.63 wt%, equivalent to 0.40 Li apfu), and the site-scattering refinement shows Li to be completely ordered at the M(3) site. Ion-microprobe analysis also shows some dehydrogenation that correlates with the amount of Ti in the amphibole.
The amphiboles show several interesting chemical correlations: (1) the Mn and Zn contents show a very strong positive correlation; (2) the K and Al contents (0.02 < Al < 0.08 apfu are very strongly inversely correlated; (3) the Li and Ca contents show a strong negative correlation. The sample order in correlations (1) and (2) is the same, supporting the idea that these correlations are petrogenetic rather than crystal-chemical.
(literal)
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- F.C. Hawthorne a), R. Oberti b), E. Cannillo b), L. Ottolini b), J. Roelofsen c), R.M. Martin c). a) Department of Geological Sciences, McGill University Montreal, Quebec, Canada H3A 2A7, b) CNR -IGG Sezione di Pavia,via Ferrata 1, I27100 Pavia, Italy, c) Department of Geological Sciences, McGill UniversityMontreal, Quebec, Canada H3A 2A7 (literal)
- Titolo
- Li-BEARING ARFVEDSONITIC AMPHIBOLES FROM THE STRANGE LAKE PERALKALINE GRANITE, QUEBEC (literal)
- Abstract
- The crystal structures of seven alkali amphiboles from the Strange Lake alkali intrusion have been refined to R values of 12% using single-crystal MoKa X-ray data. Crystals used in the collection of the intensity data were subsequently analyzed by electron- and ion-microprobe methods. Site occupancies were assigned by site-scattering refinement and stereochemical considerations, taking into account the electron- and ion-microprobe analysis of each crystal. These amphiboles are arfvedsonite and manganoan arfvedsonite, and have anomalously low X-ray scattering at the M(3) site. Ion-microprobe analysis shows the presence of significant Li in all of these amphiboles (up to 0.63 wt%, equivalent to 0.40 Li apfu), and the site-scattering refinement shows Li to be completely ordered at the M(3) site. Ion-microprobe analysis also shows some dehydrogenation that correlates with the amount of Ti in the amphibole.
The amphiboles show several interesting chemical correlations: (1) the Mn and Zn contents show a very strong positive correlation; (2) the K and Al contents (0.02 < Al < 0.08 apfu are very strongly inversely correlated; (3) the Li and Ca contents show a strong negative correlation. The sample order in correlations (1) and (2) is the same, supporting the idea that these correlations are petrogenetic rather than crystal-chemical. (literal)
- Prodotto di
- Autore CNR
- Insieme di parole chiave
Incoming links:
- Autore CNR di
- Prodotto
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
- Insieme di parole chiave di