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Carbonate

Kukharenkoite-(Ce)

Ba₂Ce(CO₃)₃F
Hardness4.5
Crystal systemMonoclinic
ClassCarbonate
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Kukharenkoite-(Ce) specimen

Kukharenkoite-(Ce) Locality: Demix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada Description: Individual blades to ~ ½ mm; top to bottom ~⅞ mm. Thanks to Bob Rothenberg. MOB coll. This is an example of kukharenkoite from the main sill. — Photo: Modris Baum · Public domain

Kukharenkoite-(Ce)

Kukharenkoite-(Ce) is a barium cerium fluoride carbonate mineral, formula Ba2CeF(CO3)3. It was identified from samples found in the Mont-Saint-Hilaire alkaline intrusive complex, Quebec, and the Khibiny Massif, Kola Peninsula, Russia. It was named for Russian mineralogist Alexander A. Kukharenko (1914–1993). The similar zhonghuacerite, a cerium containing mineral from China, is considered to be either kukharenkoite-(Ce) or huanghoite-(Ce) rather than a valid mineral.

Intro adapted from Wikipedia (CC BY-SA).

Kukharenkoite-(Ce) is an IMA-recognized mineral species in the carbonate class, with the chemical formula Ba₂Ce(CO₃)₃F.

It crystallizes in the monoclinic crystal system (space group P2_1/m).

Key properties: Mohs hardness 4.5; specific gravity 4.71; White streak; Vitreous to greasy luster; optically biaxial.

IMA symbol Kkk-Ce, IMA status: approved, named in 1995.

Found in syenitic alkalic massifs and carbonatites.

It is found associated with Belovite-(Ce), ancylite-(Ce), cebaite-(Ce), cordylite-(Ce), synchysite-(Ce), mckelveyite-(Y), ewaldite, rinkite, zakharovite, nenadkevichite, yofortierite.

The mineral was named to honor Professor Aleksandr Aleksandrovich Kukharenko (1914–1993), Russian mineralogist, St. Petersburg University, St. Petersburg, Russia.

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