Abstract
A new version of the structural formulas of holtite I, (Al0.61Ta0.25□)(Al0.96□)2(Al0.96□)2 × (Al0.90□)2(Si2.49Sb0.35As0.13)O13.46(O0.48OH0.52)(BO3), is reported. The main changes in this formula are related to the incorporation of arsenic atoms in (Sb,As)O3 pyramides into the structure.
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References
S. S. Kazantsev, D. Yu. Pushcharovskiĭ, M. Pazero, et al., Kristallografiya 50(1), 49 (2005) [Crystallogr. Rep. 50, 42 (2005)].
N. V. Zubkova, D. Yu. Pushcharovskiĭ, Yu. K. Kabalov, et al., Kristallografiya 51(1), 23 (2006) [Crystallogr. Rep. 51, 16 (2006)].
G. M. Sheldrick, SHELX97. Program for the Solution and Refinement of Crystal Structures (Siemens Energy and Automation, Madison, WI, 1997).
P. Keller, Eur. J. Mineral 13, 769 (2001).
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Original Russian Text © S.S. Kazantsev, N.V. Zubkova, A.V. Voloshin, 2006, published in Kristallografiya, 2006, Vol. 51, No. 3, pp. 445–446.