FIBROUS FOITITE FROM SAN-PIERO IN CAMPO, ELBA, ITALY

Authors
HAWTHORNE FC COOPER MA TEERTSTRA DK
Citation
Fc. Hawthorne et al., FIBROUS FOITITE FROM SAN-PIERO IN CAMPO, ELBA, ITALY, Canadian Mineralogist, 34, 1996, pp. 741-744
Citations number
4
Categorie Soggetti
Mineralogy
Journal title
Canadian Mineralogist → ACNP
ISSN journal
00084476
Volume
34
Year of publication
1996
Part
4
Pages
741 - 744
Database
ISI
SICI code
0008-4476(1996)34:<741:FFFSIC>2.0.ZU;2-J
Abstract
A second occurrence of the X-sire-vacant tourmaline foitite has been f ound in a complex pegmatite dike at San Piero in Campo, Elba. Foitite occurs as acicular and hairlike fibrous crystals associated with quart z and feldspars in miarolitic cavities in the medium-grained part of a complex tourmaline-bearing pegmatite. The fibers are unzoned and have the composition square(0.63)Na(0.36)Ca(0.01)(Fe1.52Mn0.19Mg0.08Al 0.8 6Ti0.01Li0.33)Al6Si6O18(BO3)(3)(OH)(4), virtually identical to that re corded for foitite from southern California by MacDonald et al. (1993) .