Multiple oxide containing niobium or titanium, aeschynite group
Specific gravity: 4.6 to 5.04
Hardness: 5 to 6
Streak: Light yellowish brown
Colour: Dark to pale brown, brownish black
Plutonic igneous environments
At the type locality, the East Mine, Bayan Obo deposit, Baotou League, Inner Mongolia, China, aeschynite-(Nd) occurs in veins in slate and metamorphosed dolostone associated with aegirine, riebeckite, baryte, fluorite, albite, phlogopite and magnetite (HOM, Mindat, AM 69.565).
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