Romanèchite
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Physical & Optical Properties
Mohs Hardness
Crystal System
Value & Market
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About Romanèchite
Romanèchite is a hydrated barium manganese oxide mineral that forms botryoidal, massive, or dendritic black to steel-gray aggregates with a submetallic to dull luster. It is a significant ore of manganese and was named after the Romanèche commune in France's Beaujolais region, though it is found worldwide wherever manganese-rich waters have deposited secondary minerals. Its dendritic forms embedded in limestone or agate, called landscape agates, are popular ornamental stones.