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  3. Biotite

Biotite

3 items
Icy crystals with embedded dark and golden minerals create a complex, textured surface.
Calcite vein associated with biotite and pyrrhotite in Svecofennian marble, Precambrian basement of Estonia Sophie Graul
Rough, fractured rocks with varied textures and colors, including black, white, and greenish hues.
Contact aureole between tonalitic melt and diopside marble, Precambrian basement of Estonia Sophie Graul
Dark, shredded fabric debris scattered across a textured, light-colored surface.
Deformed pyrrhotite associated with graphite in Estonian Precambrian gneisses Sophie Graul

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