Magnetite
Cerro Huañaquina, Yocalla Municipality, Tomás Frías Province, Potosí, Bolivia
12.3 x 8.3 x 4.7 cm. Typically the Magnetite specimens from this locality are closely grown together, and this is a great example of said material. The piece has excellent quality, good size, razor sharp, lustrous, black, metallic, "Alpine-type" octahedra covering the underlying matrix. The largest Magnetite crystal measures 2.2 cm across, which ...
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