Rinkite

rinkite

rosenbuschite

eudialyte

arfvedsonite

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Formulae:
Rinkite-(Ce): (Ca₃REE)Na(NaCa)Ti(Si₂O₇)₂(OF)F₂
Rinkite-(Y): Na₂Ca₄YTi(Si₂O₇)₂OF₃
Sorosilicates (Si₂O₇ groups), rinkite group of the seidozerite supergroup, closely related to mosandrite-(Ce)
Environments

Plutonic igneous environments
Pegmatites

Rinkite is characteristic of some nepheline syenites and related pegmatites. Associated minerals include arfvedsonite, aegirine, eudialyte, steenstrupine-(Ce), leucophanite, wöhlerite, rosenbuschite and sodalite (HOM).

Localities

At Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Quebec, Canada, rinkite occurs in eudialyte-rich pegmatites, sodalite xenoliths and nepheline syenite (Dana).

At the type locality, Kangerluarsuk Fjord, Ilímaussaq complex, Narsaq, Kujalleq, Greenland, rinkite occurs in sodalite syenite (Dana).

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