A Sulfite-Bearing Analog of Marinellite

The crystal structure of a mineral of the cancrinite group with an aluminosilicate framework of the marinellite type and a dominant sulfite group in one of the extraframework sites in the liottite cavity is studied. The studied mineral is derived from a paleovolcano near Magliano (Lazio, Italy) and...

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Bibliographic Details
Published in:Geology of ore deposits 2023-12, Vol.65 (7), p.782-793
Main Authors: Zubkova, N. V., Chukanov, N. V., Varlamov, D. A., Vigasina, M. F., Pekov, I. V., Ksenofontov, D. A., Pushcharovsky, D. Yu
Format: Article
Language:English
Subjects:
Aluminosilicates
Anions
Crystal structure
Earth and Environmental Science
Earth Sciences
Mineral Resources
Minerals
Nepheline
Potassium aluminum silicates
Raman spectroscopy
Structural analysis
Sulfite
Sulfur trioxide
Sulphates
Syenite
Unit cell
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Summary:The crystal structure of a mineral of the cancrinite group with an aluminosilicate framework of the marinellite type and a dominant sulfite group in one of the extraframework sites in the liottite cavity is studied. The studied mineral is derived from a paleovolcano near Magliano (Lazio, Italy) and is one of the major rock-forming phases of the leucite–nepheline syenite. The divergence factor was R = 5.71% for 6819 independent reflections with I > 2σ( I ). The studied mineral is trigonal, space group is P 31 c , and the unit cell parameters are a = 12.87267(18), c = 31.7393(5) Å, V = 4554.75(15) Å 3 . The crystal chemical formula Na 29.78 K 11.82 Ca 6.40 (Si 36 Al 36 O 144 )(SO 4 ) 6 (SO 3 ) 2 Cl 2 (OH) 0.40 ⋅3.98H 2 O ( Z = 1), which is based on the results of XRD structure analysis, is consistent with electron-microprobe data. The presence of the anion was confirmed by the Raman spectrum.
ISSN:1075-7015
1555-6476
DOI:10.1134/S1075701523070152