Synthetic fluoro-amphiboles: Site preferences of Al, Ga, Sc and inductive effects on mean bond-lengths of octahedra

Canadian Mineralogist

Volumn 36, Issue 5, 1998, Pages 1245-1252

  Oberti, Roberta ^c   Hawthorne, Frank C ^a,c   Camara, Fernando ^b,c   Raudsepp, Mati ^d  

^a UNIVERSITY OF MANITOBA   (Canada)

^b ARIZONA STATE UNIVERSITY   (United States)

^c CNR   (Italy)

^d UNIVERSITY OF BRITISH COLUMBIA   (Canada)

Author keywords

Amphibole; Cation order; Crystal structure; Fluoro magnesiokatophorite; Fluoropargasite; Synthesis

Indexed keywords

AMPHIBOLE; CRYSTAL STRUCTURE;

EID: 0032469221     PISSN: 00084476     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (9)

1. BOSCHMANN, K.F., BURNS, P.C., HAWTHORNE, F.C., RAUDSEPP, M. & TURNOCK, A.C. (1994): A-site disorder in synthetic fluoredenite, a crystal-structure study. Can. Mineral. 32, 21-30.
2. HAWTHORNE, F.C., OBERTI, R. & SARDONE, N. (1996): Sodium at the A site in clinoamphiboles: the effect of composition on patterns of order. Can. Mineral. 34, 577-593.
3. 2. Can. Mineral. 33, 13-24.
4. 3+ cations in synthetic amphiboles with nominal fluoro-eckermannite composition: deviations from stoichiometry and structural effects of the cummingtonite component. Am. Mineral. (in press).
5. _, _, UNGARETTI, L. & CANNILLO, E. (1993): The behaviour of Mn in amphiboles: Mn in richterite. Eur. J. Mineral. 5, 43-51.
6. _, SARDONE, N., HAWTHORNE, F.C, RAUDSEPP, M. & TURNOCK, A.C. (1995a): Synthesis and crystal-structure refinement of synthetic fluor-pargasite. Can. Mineral. 33, 25-31.
7. _, UNGARETTI, L., CANNILLO, E., HAWTHORNE, F.C. & MEMMI, I. (1995b): Temperature-dependent Al order-disorder in the tetrahedral double chain of C2/m amphiboles. Eur. J. Mineral. 7, 1049-1063.
8. RAUDSEPP, M., TURNOCK, A.C. & HAWTHORNE, F.C. (1991): Amphibole synthesis at low pressure: what grows and what doesn't. Eur. J. Mineral. 3, 983-1004.
9. 19F MAS NMR spectroscopy. Am. Mineral. 72, 580-593.