LABUNZOVIT (EXTREM SELTEN), BERG KOASCHWA, CHIBINY-KOMPLEX, KOLA, RUSSLAND (Miniatur)
Labunzowit (K,Na)3Ti2(SiO3)4(O,OH)2 nH2O ist eine äußerst seltene und spärliche Mineralgruppe, die typischerweise in siliziumarmen Alkaligesteinen wie Nephelinsyeniten und Karbonatiten vorkommt. Diese Gruppe umfasst drei verschiedene Arten: Labunzowit-Fe, Labunzowit-Mg und Labunzowit-Mn. Das Mineral ist nach den russischen Mineralogen Aleksander Nikolaevich Labunzow und Ekaterina Evtikhieva Kostyleva-Labunzowa benannt, die bedeutende Forschungen in der Region der Kola-Halbinsel durchgeführt haben. Labunzowit zeichnet sich durch seine zentimetergroßen, prismatischen bis nadelartigen Kristalle aus, die Längen von bis zu 15 mm erreichen können und oft in strahligen Aggregaten oder Sphärolithen vorkommen, wobei die Farben von schwärzlich-rot bis gelb-braun reichen.
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