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Formula: Nd2(CO3)3.8H2O
Hydrated normal carbonates
Specific gravity: 2.81
Hardness: 2½ to 3
Streak: White
Colour: Pale purple, light pink
Solubility: Lanthanite-(Nd) is decomposed with effervescence by dilute hydrochloric acid (AM 66.637-638)
Environments
The lanthanites are rare secondary carbonates
typically formed by
alteration or weathering from earlier rare-earth-element-bearing
minerals (Webmin)
Localities
At its type locality, Curitiba, Paraná, Brazil, lanthanite-(Nd) occurs in recent carbonate-rich sediments
(AM 66.637-638).
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