Distribution of minerals from bottom to top of image reflect time of their formation: white Clausthalite basement, grey Berzelianite intermediate layer, pink Hakite grains, yellow selenoan Chalcopyrite crystalline crust, brownish calcite with dessiminathed in it minute rhombic in section light-grey Tiemannite crystals. Minor lilac Umangite replace berzelianite along fissures. Polished section in reflected light. FOV is ~0.3x0.25 mm. Pavel M. Kartashov collection and photo.
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