Crystallization sequence and tectonic significance of andalusite, kyanite, and sillimanite 'triple point' localities, includ
kyanite.UX.jpg
a little help! i'm thinking it's kyanite, as it's surrounded by heavily altered muscovite, biotite, and quartz. this is a sample from a drill core, it should be a schist, but i'm
Crystal of kyanite surrounded by muscovite crystals (30 µm… | Flickr