Sørensenite - Na4SnBe2Si6O16(OH)4

Sørensenite was first observed in 1962 in the Kvanefjeld area in the north-westernmost part of the Ilimaussaq complex (Greenland), on the north-east slope of Nakalaq. Sørensenite occurs in hydrothermal veins in naujaite in association with analcime, microcline, sodalite, neptunite and aegirine.

Optical properties:
• Form: Lath-shaped or acicular crystals.
• Relief: Moderate.
• Color: Colorless.
• Twinning: Complex.
• Interference colors: Low (pale yellow-grey).



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Pale-pink sørensenite crystlals. For more informations: Sørensenite Syenite - Virtual Microscope.




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Columnar crystals of sørensenite (with milky white to pinkish-lavender). Kvanefjeld Mt., Ilimaussaq complex.






Bibliography



• Semenov, E.I. et al. (1965): Sorensenite, new sodium-beryllium-tin silicate from the Ilimaussaq intrusion, South Greenland. Amer Mineral., 51, 1547-1548.

Photo
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite (colorless) crystals in a Sørensenite syenite, Ilímaussaq, Greenland. PPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite (colorless) crystals in a Sørensenite syenite, Ilímaussaq, Greenland. PPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite (colorless) crystals in a Sørensenite syenite, Ilímaussaq, Greenland. PPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite (colorless) crystals in a Sørensenite syenite, Ilímaussaq, Greenland. PPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite (colorless) crystals in a Sørensenite syenite, Ilímaussaq, Greenland. PPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)
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Sørensenite crystals (with complex twinning) in a Sørensenite syenite, Ilímaussaq, Greenland. XPL image, 2x (Field of view = 7mm)