Adamello National Park
Forcel Rosso pass
From Figure 9 of Diella et al, 2018
Rossmanite occurs in the central pink area.
In the Adamé valley, gem-quality tourmaline occurs in multi-coloured
elongated crystals up to 7 cm in length in the miarolitic pegmatite
cavities hosted in contact with metamorphic sandstones that
belonging to a Permian-Mesozoic sedimentary sequence. The
tourmalines in the study were principally fluor-elbaite, along with
minor amounts of fluor-liddicoatite, foitite and rossmanite that likely
represented the final stages of the evolution of tourmaline
compositions in the pegmatites.
Tourmaline compositions frm
the Adamello Massif: from Diella et al, 2018
F, Bocchio R, Marinoni N, Cámara F, Langone A, Adamo I, Lanzafame G
(2018) Gem-Quality Tourmaline from LCT Pegmatite in Adamello Massif,
Central Southern Alps, Italy: An Investigation of Its Mineralogy, Crystallography and 3D Inclusions.
Minerals 8, 593; doi:10.3390/min8120593.
last upgrade: 28-Mar-2019