Click for expanded viewNot a great photo
Class: SilicateSubclass: FrameworkHardness: 7Density: 2.7Lustre: GlassyHabit: CrystallineColours: Translucent gray
Identification in hand sample:Hardness, colour and translucency are indicative.
Comments:Gray colour is due to Al, H or Na substituting for Si.
Inaccurate data? Better photos? .