Sergey Vasiliev's Image Gallery

Potassic-magnesiohastingsite: (K,Na)Ca2(Mg,Fe++,Fe+++,Al)5(Si,Al)8O22(OH,Cl)2

Comments: Black crystalling aggregate of potassic-magnesiohastingsite.
Location: Lake Bolshoy Ishkul, Ilmeny Mts, Chelyabinsk District, Russia. Scale: Specimen size: 12x5 mm.
© Sergey Vasiliev / Systematic Mineralogy

Rimkorolgite: Mg5Ba(PO4)4·8(H2O)

Comments: Pinkish flesh-colored crystals of rimkorolgite in matrix.
Location: Kovdor Massif, Kola Peninsula, Russia. Scale: Specimen Size 25x17x8 mm.
© Sergey Vasiliev / Systematic Mineralogy

Sahamalite-(Ce): (Mg,Fe++)Ce2(CO3)4

Comments: White granular aggregate of sahamalite-(Ce) on matrix.
Location: Silfide Queen Deposit, Mountain Pass Mine, San Bernandino Co., California, USA. Scale: Specimen Size 9x7x5 mm.
© Sergey Vasiliev / Systematic Mineralogy

Saryarkite-(Y): Ca(Y,Th)Al5(SiO4)2(PO4,SO4)2(OH)7·6(H2O)

Comments: Single grain of saryarkite-(Y).
Location: Akkuduk (White Well) occurrence, Mointy, Dzezkazgan Oblast', Kazakhstan. Scale: Not Given.
© Sergey Vasiliev / Systematic Mineralogy

Sazhinite-(La): Na3La[Si6O15]·2(H2O)

Comments: White, fine-grained crystalling sazhinite-(La) lining vugs in matrix.
Location: Aris Phonolite, Windhoek, Namibia. Scale: Specimen Size 19x13x10 mm.
© Sergey Vasiliev / Systematic Mineralogy

Sinjarite: CaCl2·2(H2O)

Comments: Sinjarite specimen sealed in a glass capsule.
Location: Cheleken, Caspian Sea, Turkmenistan. Scale: Grid Size 1 mm.
© Sergey Vasiliev / Systematic Mineralogy

Surkhobite: KBa3Ca2Na2(Mn, Fe++,Fe+++)16Ti8(Si2O7)8O8(OH)4 (F,O,OH)8

Comments: Small grain of reddish surkhobite.
Location: Dara-i-Pioz Glacier, Altai Range, Tajikistan. Scale: Graph Size 1 mm.
© Sergey Vasiliev / Systematic Mineralogy

Umbite: K2ZrSi3O9·(H2O)

Comments: White, granular crystals of umbite in matrix.
Location: Koashva Mt. Khibiny Massif, Kola Peninsula, Russia. Scale: Specimen Size 17x15x8 mm.
© Sergey Vasiliev / Systematic Mineralogy

Voronkovite: Na15(Na,Ca,Ce)3(Mn,Ca)3Fe3Zr3Si26O72(OH,O)4Cl·H2O

Comments: Brownish red cleavage fragment of voronkovite.
Location: Alluaiv Mt., Lovozero Massif, Kola Peninsula, Russia. Scale: Specimen Size 5 x 2 mm.
© Sergey Vasiliev / Systematic Mineralogy