Metallic Pyrolusite on Matrix Wholesale Lot - 11 Pieces

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This is a wholesale flat of natural pyrolusite on matrix, from Morocco. You will receive the 11 pieces pictured in the flat. The specimens in this flat range from approximately 2.2" to 4.4" wide.

Pyrolusite is a mineral consisting of manganese dioxide (MnO2) and is important as an ore of manganese. It has a silver, metallic luster, a black or bluish-black streak, and readily soils the fingers. It commonly is found in finely packed fibrous, acicular and radial forms composed of very fine needles or fibers.