Arfvedsonite, Quartz (Var: Smoky Quartz), Orthoclase

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A nice specimen consisting of a feldspar rock matrix hosting a lot of undamaged and perfectly terminated jet black arfvedsonite crystals (up to 2 cm) with a great luster. Arfvedsonite is a fairly rare amphibole in nice macroscopic crystals. Also present are smoky quartz crystals and white orthoclase which provide a nice contrast to the black arfvedsonite.