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Sazykinaite-(Y)

Named for Russia artist Ludmila B. Sazykina whose work featured the Kola Peninsula in Russia. Localities for Sazykinaite are at the type locality in Koashva Mountains in the Kola Peninsula in Russia, and at Mont Saint-Hilaire in Quebec, Canada. It appears as yellow to pale green translucent rhombohedrons and can fluoresce bight green under ultraviolet light.
Ref. Minerals and their Localities, Bernard, J.H. and Hyršl, J. (2004)
IMA/CNMNC List of Mineral Names (2009) and Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 122 (1993) (5), 76
- Formula
- Na5YZrSi6O18ยท6H2O
- Crystal System
- Trigonal
- Crystal Habit
- Crystalline - Fine
- Cleavage
- Imperfect, None, None
- Luster
- Vitreous (Glassy)
- Color
- light green, yellow
- Streak
- white
- Class
- Trigonal - Trapezohedral
- Fracture
- Brittle
- Hardness
- 5
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Sazykinaite-(Y) from Koashva Mt., Khibiny Massif, Kola Peninsula, Russia

Very light tan to clear, colorless rhombic crystals in a small cluster. Sazykinaite is within the Hiliarite group and occurs in only two worldwide localities. It is also one of only nine Y-Zr minerals.
Yellowish brown rhombic crystals to 1.5mm on green amphibolite(?).