Pyrolusite

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Metallic, lustrous, diverging sprays of pyrolusite blades to 3.7 cm are embedded in massive, cabinet-sized, manganese ore on this excellent old-time specimen from Conselheiro Lafaiete, Brazil. This manganese mine opened in 1894. It is much better known for the recent finds of superlative, gemmy, cherry-red rhodonite. Classic, very rich, older material from the Dennis Mullane Collection. Weighs 3.1 pounds.