A new occurrence of the rare Li amphibole, holmquistite, has been discovered near Barraute, Quebec. It occurs at or near the contact of spodumene pegmatites and hornblende-rich rock. A chemical analysis indicates a composition close to Li 2 (Mg,Fe'') 3 (Al,Fe''') 2 Si 8 O 22 (OH) 2 . The holmquistite is orthorhombic, with a = 18.30, b = 17.69, and c = 5.30. The optical and physical properties are similar to those of other holmquistites cited in the literature.

First Page Preview

First page PDF preview
You do not currently have access to this article.