Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia

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Astrophyllite : (K,Na)3(Fe,Mn)7Ti2Si8O24(O,OH)7, Albite : Na[AlSi3O8], Aegirine : NaFe3+[Si2O6]
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Small laths of metallic-bronze astrophyllite in albitized nephelin-syenite pegmatite matrix. This astrophyllite is enriched with Mn and Cs and is tranzitive to kupletskite-(Cs). Associated minerals are green aegirine prismes, beige zeolites secondary after nepheline grains and minor brownish cubes of altered loparite-(Ce). Specimen size is ...
© Pavel M. Kartashov	Photo ID: 152471    View Count: 103
Britholite-(Ce) : Ca2(Ce,Ca)3[(OH,F)|(SiO4,PO4)3]
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia The visit card of Burpala alkaline massif is its britholite-(Ce). It form masses up to some metres long in nephelin-syenite pegmatites. Here you see chunk of massive monomineral britholite-(Ce) 10.5x5x2.5 cm. Its weight is 225 g and its radioactivity 2176 μR/h. Collected in 1991. Pavel M. Kartashov collection (#3225) and photo.
© Pavel M. Kartashov	Photo ID: 152948    View Count: 128
Burpalite : Na2CaZr[F2|Si2O7]
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia The longest dimension of Burpalite is about 5 mm
© Sergey Vasiliev	Photo ID: 59037    View Count: 427
Landauite : NaMnZn2(Ti,Fe)6Ti12O38, Albite : Na[AlSi3O8]
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Black tabular crystals of landauite from the type locality on albite matrix. These crystals contain microscopic impregnation of more former murataite-(Y) relicts. FOV is ~6x4.5 mm. Holotype specimen from author - A.M. Portnov. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov	Photo ID: 114342    View Count: 299
Seidozerite (Var: Ca-bearing Seidozerite) : Na8CaMn2+Zr3Ti3[O|F|Si2O7]4, Albite : Na[AlSi3O8], Aegirine : NaFe3+[Si2O6]
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Orange-brown crystals of calcian seidozerite from albitization zone of the massif. FOV ~1x0.7 cm. Collected, investigated and described by A.M. Portnov - the author of this variety. So this is part of the holotype for the variety. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov	Photo ID: 107208    View Count: 213
Tritomite-(Ce) : (Ce,La,Y,Th)5(Si,B)3(O,OH,F)13
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Triangular sections of fresh unaltered tritomite-(Ce) crystals in fenite matrix. FOV is ~12x10 mm. Collected by Nikolai V. Vladykin. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov	Photo ID: 134602    View Count: 239
Tritomite-(Ce) : (Ce,La,Y,Th)5(Si,B)3(O,OH,F)13, Bastnäsite-(Ce) : (Ce,La)[F|CO3]
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Tritomite-(Ce) crystal in fenite matrix. Section parallel to L6. Crystal from weathered surface of rock and is partialy replaced by microcrystaline yellow bastnasite-(Ce) with outlined inner structure of metamictization of the mineral. FOV is ~12x10 mm. Collected by Nikolai V. Vladykin. Pavel M. Kartashov collection and photo. Mindat.org Photo of the Day - 17th Feb 2009
© Pavel M. Kartashov	Photo ID: 134209    View Count: 475
Tritomite-(Ce) : (Ce,La,Y,Th)5(Si,B)3(O,OH,F)13, Bastnäsite-(Ce) : (Ce,La)[F|CO3]
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Triangular sections of tritomite-(Ce) crystals in fenite matrix. Material is partialy altered and replaced by yellow bastnasite-(Ce). FOV is ~12x10 mm. Collected by Nikolai V. Vladykin. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov	Photo ID: 134604    View Count: 186
Tritomite-(Ce) : (Ce,La,Y,Th)5(Si,B)3(O,OH,F)13
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Triangular, parallel to L6, sections of tritomite-(Ce) short-prismatic crystals in fenite matrix. Specimen with weathered surface of rock, so tritomite is partialy replaced by microcrystaline yellow bastnasite-(Ce). Specimen size is 8x6x3 cm and its radioactivity is ~175 μR/h. Collected by Nikolai V. Vladykin. Pavel M. Kartashov collection and ...
© Pavel M. Kartashov	Photo ID: 144165    View Count: 173
Tritomite-(Ce) : (Ce,La,Y,Th)5(Si,B)3(O,OH,F)13
	Burpala alkaline Massif, Maigunda River, Mama River Basin, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia Triangular sections of fresh unaltered tritomite-(Ce) crystals in fenite matrix. FOV is ~12x10 mm. Collected by Nikolai V. Vladykin. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov	Photo ID: 134603    View Count: 113