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Vuonnemite, Ussingite, Sérandite, Neotocite


Vuonnemite : Na11Ti4+Nb2(Si2O7)2(PO4)2O3(F,OH), Ussingite : Na2AlSi3O8OH, Sérandite : Na(Mn2+,Ca)2[HSi3O9], Neotocite : (Mn,Fe,Mg)SiO3·H2O

Photo Copyright © Pavel M. Kartashov collection & photo  - This image is copyrighted. Unauthorized reproduction prohibited.
Large tabular crystal of yellowish vuonnemite from the central ussingite core of the pegmatite. Associating minerals are orange prismatic serandite, brownish-black masses of neotocite between serandite prismes, minute pearly scales of shkatulkalite, replacing vuonnemite along its cleavage surfaces. Specimen size is 6x4.5x3 cm. Collected by Arkady Shpachenko in 1991. Pavel M. Kartashov collection and photo.

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