Rinkite

rinkite

rosenbuschite

eudialyte

wohlerite

Images

Formula:
Rinkite-(Ce): (Ca3REE)Na(NaCa)Ti(Si2O7)2(OF)F2
Rinkite-(Y): Na2Ca4YTi(Si2O7)2OF3
Sorosilicate (Si2O7 groups), rinkite group, closely related to mosandrite-(Ce)
Data for rinkite-(Ce)
Specific gravity:
Hardness: 5
Streak: Yellow-white
Colour: Yellowish-brown, yellow; brown
Common impurities: Zr,Th,Y,La,Fe,Mn,Mg,K,H2O
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).

Back to Minerals