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Carbonate

Cordylite-(La)

NaCaBa₂La₃Sr(CO₃)₈F₂
Hardness4
Crystal systemHexagonal
ClassCarbonate
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Cordylite-(La)

Cordylite-(La) is an IMA-recognized mineral species in the carbonate class, with the chemical formula NaCaBa₂La₃Sr(CO₃)₈F₂.

It crystallizes in the hexagonal crystal system (space group P6_3/mmc). It is a member of the Cordylite structural group.

Key properties: Mohs hardness 4; specific gravity 4.31; White streak; Greasy to vitreous luster.

IMA symbol Cod-La, IMA status: approved, named in 2010.

Found in carbonatite lenses in association with a fenite dike.

It is found associated with Aragonite-strontianite, calcian strontianite, strontian calcite, ancylite-(Ce), thorite, carbocernaite, barite, biraite-(Ce), niobium-rich chevkinite-(Ce).

The name refers to its structural and chemical identity with cordylite and dominance of La among its rare earth elements.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more C minerals or help write this entry.