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Niningerite: (Mg,Fe++,Mn)S
Comments: PPL reflected light polished section showing light gray-brownish grains of troilite (Tr) with white niningerite (Nin) and dark silicates. Location: Indarch meteorite, Shusha, Elizavetpol, Azerbaidshan. Scale: Picture Size 0.28 mm. © Thomas Witzke