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Mineralpedia Details for Phosinaite-(Ce)

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Phosinaite-(Ce)

Phosinaite-(Ce)

Named after the phosphorous (pho), silicon (si), and sodium, also called natrium (na), in the chemical formula. Found in only a couple localities in the Khibiny and Lovozero massifs in the Kola Peninsula, Russia, which are co-type localities of the mineral, and at Mont Saint-Hilaire in Québec, Canada. In Russia, Phosinaite occurs filling gaps in the intersections of large anorthoclase crystals in pegmatites. At the Mont Saint-Hilaire locality, the Phosinaite occurs in ussingite veinlets.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/phosinaite-(Ce).pdf

Formula
Na13Ca2Ce(SiO3)4(PO4)4 
Crystal System
Orthorhombic 
Crystal Habit
Columnar 
Cleavage
Perfect, Indistinct, Indistinct 
Luster
Vitreous (Glassy) 
Color
colorless, pink, light brown 
Streak
white 
Class
Orthorhombic - Disphenoidal 
Hardness
3.5 
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Phosinaite-(Ce) from Mt. Karnasurt, Lovozero Massif, Kola Peninsula, Russia

Phosinaite-(Ce)
            from Mt. Karnasurt, Lovozero Massif, Kola Peninsula, Russia

Long red bladed crystals to 1cm suspended in lilac colored Ussingite.

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Phosinaite-(Ce) from Kedykverpakhk Mt., Lovozero Massif, Kola Peninsula, Russia

Phosinaite-(Ce)
            from Kedykverpakhk Mt., Lovozero Massif, Kola Peninsula, Russia

Brownish needle-like crystals up to 1cm in pink ussingite matrix.

Click thumbnail images for larger view.

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