The rare minerals neptunite and joaquinite have also been found there.
2.
Frequently associated minerals include : natrolite, neptunite, joaquinite, serpentine and albite.
3.
The Gemological Institute of America ( GIA ) identified an 11.78-carat faceted specimen as neptunite based on Raman spectroscopy.
4.
With increasing manganese it forms a series with " mangan-neptunite " . " Watatsumiite " is the variety with vanadium replacing the titanium in the formula.
5.
Serandite has been found in association with aegirine, analcime, arfvedsonite, astrophyllite, eudialyte, fluorite, leucophanite, mangan-neptunite, microcline, nepheline, sodalite, and villiaumite.
6.
It occurs in nepheline syenites and pegmatites in association with aegirine, nepheline, microcline, arfvedsonite, elpidite, loparite, eudialyte, astrophyllite, mangan-neptunite, lavenite, rinkite, apatite, titanite and ilmenite.
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