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Formula: Nd2.8Ca1.2(CO3)4(OH)3.H2O
Hydrated carbonate containing hydroxyl, ancylite group,
neodymium-bearing mineral
Crystal System: Monoclinic
Specific gravity: 4.02 measured, 4.08 calculated
Hardness: 4 to 4½
Streak: White
Colour: Pink
Solubility: Readily soluble in acids
Environments:
Plutonic igneous environments
Pegmatites
Hydrothermal environments
Localities
At its type locality, the Seula mine, Baveno, Piedmont, Italy, calcioancylite-(Nd) was found on
orthoclase in late-stage miaroles in
granite, associated with
orthoclase,
quartz and albite
(HOM, Webmin, AM76.1729).
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