Formula : Na4K4(Ba,K)2Fe2+(Ti,Nb)8Z(Si4O12)4(O,OH)8·10H2O
System: monoclinic Hardness:6 Rarity:rare
Strunz id:VIII/E.7-100 -
8 : Silicates
Name origin: Named after the Russian mineralogists Aleksander Nikolaevich Labuntsov and Ekaterina Eutiikkieva Labuntsov-Kostyleva.
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