Nordite-(Ce)
Nordite-(Ce) is an IMA-recognized mineral species in the silicate class, with the chemical formula Na₃SrCeZnSi₆O₁₇.
It crystallizes in the orthorhombic crystal system. It is a member of the Nordite structural group.
Key properties: Mohs hardness 5; specific gravity 3.43–3.49; Light brown streak; Vitreous to greasy luster; optically biaxial.
IMA symbol Nor-Ce, IMA status: approved, named in 1958.
Found in the ussingite core of hyperagpaitic pegmatite.
It is found associated with Aegirine, epistolite, steenstrupine-(Ce), serandite, belovite-(Ce), sphalerite.
A member of the nordite group with Zn dominant in the Z structural site and with a suffix for the dominant rare earth element.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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