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A specimen composed of several good-sized microcline crystals with well-defined faces and edges, accompanied by white albite crystals. A group of smoky quartz crystals with good luster and transparency stands out at the top. This specimen comes from the collection of Peter Seroka (Potsdam, 1942 - L'Escala, 2020), a well-known German collector residing in Catalonia and a lover of feldspars.